CN210885031U

CN210885031U - Lifting arm assembly

Info

Publication number: CN210885031U
Application number: CN201921159154.XU
Authority: CN
Inventors: 夏明松; 周雪浩; 喻昌林; 高卫卫
Original assignee: Aolong Automobile Co ltd
Current assignee: Aolong Automobile Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-06-30
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a lifting arm component, which comprises a base which can be fixed on a vehicle, a lifting arm, a pulley component and at least one diagonal draw bar, wherein the lower end of the lifting arm is connected with the base through a detachable first connecting structure; the pulley assembly is connected to the upper end of the suspension arm; the upper end of the diagonal draw bar is connected with the suspension arm, and the lower end of the diagonal draw bar is connected with the base through a detachable second connecting structure. The utility model provides a back is fixed on the vehicle to the base, can install parts such as davit, oblique pull rod fast on the base in order to be used for lifting by crane the heavy object as required, and the usage is extensive, very convenient.

Description

Lifting arm assembly

Technical Field

The utility model relates to a lifting machine technical field, especially a lifting arm subassembly.

Background

An off-road vehicle is a vehicle that is specifically designed for off-road use. The main characteristics of the off-road vehicle are four-wheel drive, higher chassis, better grip tyre, higher exhaust pipe, higher horsepower and thick and firm bumper, which can be suitable for driving in the field. In order to avoid sinking into a mud-over road section when driving in the field, a plurality of off-road vehicles are provided with a escaping device, such as a domestic warrior series off-road vehicle, and the escaping device has the structure that: comprises a base 81, an electric capstan 82 is arranged in the base 81, a steel wire rope 83 is wound on the electric capstan 82, and the free end of the steel wire rope 83 is connected with a hook 84. When the off-road vehicle is sunk into the ground, the wire rope 83 is pulled out, the hook 84 is hooked on a nearby tree trunk or other fixed objects, then the motor of the electric winch 82 is started, the wire rope 83 is wound, and the off-road vehicle can be pulled out of the ground, so that the off-road vehicle is trapped.

When a vehicle with a escaping device such as an off-road vehicle is driven to carry out field activities, goods are often required to be loaded and unloaded, the current loading and unloading of goods can only be carried out manually, and the goods are very difficult to move when being heavier, which wastes time and labor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a lifting arm assembly applicable to a vehicle for lifting heavy objects.

The utility model discloses a solve its technical problem and the technical scheme who adopts is:

a lifting arm assembly, comprising:

a base securable to a vehicle;

the lower end of the suspension arm is connected with the base through a detachable first connecting structure;

the pulley assembly is connected to the upper end of the suspension arm;

and the upper end of the diagonal draw bar is connected with the suspension arm, and the lower end of the diagonal draw bar is connected with the base through a detachable second connecting structure.

In one embodiment, the first connecting structure comprises a slot arranged on the base, and a plug board hinged at the lower end of the suspension arm and plugged in the slot.

In one embodiment, the upper portion of base have the horizontal plate, be fixed with the apron on the horizontal plate, apron and horizontal plate form front side open-ended box body structure jointly, the inner space of box body structure form the slot, the upper surface of picture peg be provided with the articulated seat that the davit is articulated, the front side portion of apron still is provided with and supplies articulated seat inserts the U-shaped breach wherein.

In one embodiment, the diagonal draw bar has an adjustment mechanism capable of adjusting the length thereof.

In one embodiment, the diagonal draw bar comprises a first draw bar and a second draw bar located below the first draw bar, the adjusting mechanism comprises a hexagonal rod connected between the first draw bar and the second draw bar, a first threaded rod is arranged at the upper end of the hexagonal rod, a second threaded rod is arranged at the lower end of the hexagonal rod, the thread screwing directions of the first threaded rod and the second threaded rod are opposite, a threaded hole matched with the first threaded rod for screwing is formed in the lower end of the first draw bar, and a threaded hole matched with the second threaded rod for screwing is formed in the upper end of the second draw bar.

In one embodiment, the second connecting structure comprises a bolt, a connecting seat fixed on the base, and a U-shaped buckle arranged at the lower end of the diagonal draw bar, wherein first through holes are respectively arranged at two ends of the U-shaped buckle, a second through hole is arranged on the connecting seat, the connecting seat is inserted between the two ends of the U-shaped buckle, the second through hole is aligned with the two first through holes, and the bolt penetrates through the second through hole and the two first through holes to enable the suspension arm and the diagonal draw bar to be hinged.

In one embodiment, one of the two first through holes is a threaded hole, and one end of the bolt is provided with an external thread which is in threaded fit with the threaded hole.

In one embodiment, the pulley assembly comprises a first wheel plate, a second wheel plate and a rotating wheel hinged between the first wheel plate and the second wheel plate, the upper end of the first wheel plate is hinged with a door plate, and an unlocking door locking structure capable of locking the door plate in a door closing state is arranged between the second wheel plate and the door plate.

In one embodiment, the door locking structure comprises a locking rod and a heart-shaped through hole arranged on the door plate, one end of the locking rod is provided with a heart-shaped locking block which can penetrate through the through hole, and the other end of the locking rod is pivoted with the second wheel plate.

In one embodiment, the upper end of the suspension arm is connected with a connecting piece extending downwards, the lower end of the connecting piece is provided with a threaded rod, and the lock rod is provided with a threaded hole capable of being in threaded connection with the threaded rod when the heart-shaped lock block locks the door panel.

The utility model has the advantages that: the utility model provides a back is fixed on the vehicle to the base, can install parts such as davit, oblique pull rod fast on the base as required in order to be used for lifting by crane the heavy object, need not to lift by crane when the heavy object with parts such as davit, oblique pull rod pull down can, the usage is extensive, very convenient.

Drawings

FIG. 1 is a schematic structural view of the utility model in use;

FIG. 2 is an exploded view of the first connection structure;

fig. 3 is a schematic structural diagram of the present invention;

fig. 4 is a partially enlarged view of a portion a of fig. 3;

fig. 5 is a schematic view of the pulley assembly and the link assembly connected together;

fig. 6 is an exploded view of the structure shown in fig. 5.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 6, an embodiment of the present invention provides a lifting arm assembly, which includes a base 1 capable of being fixed on a vehicle, a lifting arm 2, a pulley assembly 3, and a diagonal draw bar 4, wherein a lower end of the lifting arm 2 is connected to the base 1 through a detachable first connecting structure; the pulley assembly 3 is connected to the upper end of the suspension arm 2; the number of diagonal draw bar 4 is one and more, all diagonal draw bar 4's upper end all with the upper end of davit 2 is connected, and all diagonal draw bar 4's lower extreme and base 1 all are connected through detachable second connection structure, and its effect provides the pulling force for davit 2. The vehicle is a vehicle having a device for escaping from a trouble, and is typically an off-road vehicle.

The suspension arm 2 can be an inclined rod piece with fixed length, also can be an inclined rod piece with adjustable length, and also can be a bent rod piece with fixed length, and the bending rod piece can be selected according to actual requirements.

Referring to fig. 2, the first connecting structure includes a slot 11 disposed on the base 1, and an insert plate 5 hinged to a lower end of the boom 2 and inserted into the slot 11. In this embodiment, the upper portion of base 1 have horizontal plate 14, be fixed with apron 13 on the horizontal plate 14, apron 13 and horizontal plate 14 form the front side open-ended box structure jointly, the inner space of box structure form slot 11, the upper surface of picture peg 5 be provided with davit 2 articulated seat 51, the front side portion of apron 13 still is provided with and supplies articulated seat 51 inserts U-shaped breach 131 wherein. The suspension arm 2 is obliquely arranged, and when the suspension arm 2 is installed, the inserting plate 5 is pushed to be inserted into the inserting groove 11, so that the operation is very convenient and fast; in addition, after the whole suspension arm component is installed, the inserting plate 5 can be limited to be separated from the inserting groove 11 under the action of the inclined pull rod 4, and the whole structure is simple and firm.

The second connection structure include bolt 6, fix connecting seat 12 on the base 1 and set up and be in the U-shaped of oblique pull rod 4 lower extreme is detained 46, the both ends that 46 were detained to the U-shaped set up first through-hole respectively, be provided with the second through-hole on the connecting seat 12, connecting seat 12 insert and establish between 46 both ends are detained to the U-shaped and the second through-hole aligns with two first through-holes, bolt 6 pass second through-hole and two first through-holes so that davit 2 and oblique pull rod 4 are articulated. Preferably, one of the two first through holes is a threaded hole, and one end of the bolt 6 is provided with an external thread matched and screwed with the threaded hole. The bolt 6 is provided at its bell end with a screw-on portion similar to a key handle. Adopt the helicitic texture can be with bolt 6 and oblique U-shaped knot 46 of pull rod 4 lower extreme with fixed, deviate from when avoiding bolt 6 to receive the vibration.

Of course, the second connecting structure may take other forms, such as reversing the positions of the clevis 46 and the connecting section 12.

Referring to fig. 1, when a vehicle having an escape apparatus is driven for field activities, a base 1 is fixed to a base 81 of the escape apparatus or other locations on the vehicle by fasteners such as screws. The upper ends of the diagonal draw bars 4 and the upper end of the boom 2 are hinged together, typically by bolts, and the upper end of the pulley assembly 3 is suspended from the upper end of the boom 2 by a link 7. When the heavy object needs to be lifted by crane, the upper end of oblique pull rod 4 is connected with the upper end of davit 2, is connected davit 2 and U type seat 11 through first bolt, will pull rod 4 to one side through bolt 6 and be connected with connecting seat 12, hangs loose pulley assembly 3 in the upper end of davit 2, pulls out wire rope 83 of the device of will getting rid of poverty again, passes behind loose pulley assembly 3 and connects wire rope 83 and couple 84 again, has accomplished promptly the utility model discloses an installation just can regard as the electrodynamic force source with electric capstan 82 after the installation is accomplished for lift by crane the heavy object. The whole installation process is very convenient and fast, the suspension arm 2, the diagonal draw bar 4 and other components are dismounted when the heavy object is not lifted, and the application is wide and very convenient.

Further, the diagonal draw bar 4 has an adjusting mechanism capable of adjusting the length thereof. Preferably, diagonal member 4 include first pull rod 41 and be located the second pull rod 42 of first pull rod 41 below, adjustment mechanism is including connecting hexagonal pole 43 between first pull rod 41 and second pull rod 42, the upper end of hexagonal pole 43 is provided with first threaded rod 44, and the lower extreme is provided with second threaded rod 45, the screw thread of first threaded rod 44 and second threaded rod 45 is revolved to opposite, the lower extreme of first pull rod 41 be provided with the screw hole of first threaded rod 44 cooperation spiro union, the upper end of second pull rod 42 be provided with the screw hole of second threaded rod 45 cooperation spiro union. The lower end of the suspension arm 2 is hinged with the U-shaped seat 11, the length of the diagonal draw bar 4 can be adjusted by screwing the hexagonal rod 43, and then the inclination angle of the suspension arm 2 is adjusted to adapt to different working conditions.

In the general pulley assembly 3, the space for the steel wire rope 83 to pass through is small, and the hook 84 for escaping from the trouble cannot pass through, so that when the pulley assembly 3 is adopted, the hook 84 needs to be detached from the steel wire rope 83 first when the steel wire rope 83 is installed, then the steel wire rope 83 needs to be grabbed, the free end of the steel wire rope 83 passes through the pulley assembly 3 and is wound on the rotating wheel 33, and then the hook 84 is connected to the free end of the steel wire rope 83, which is very troublesome.

In order to solve the above problem, the pulley assembly 3 may have a structure including a first wheel plate 31, a second wheel plate 32, and a rotating wheel 33 hinged between the first wheel plate 31 and the second wheel plate 32, wherein lower portions of the first wheel plate 31 and the second wheel plate 32 are connected by a fastener such as a screw, and the rotating wheel 33 is hinged between a middle portion of the first wheel plate 31 and a middle portion of the second wheel plate 32 by a shaft member such as a bolt. The upper end of the first wheel plate 31 is hinged with a door plate 34, and an unlocking door locking structure capable of locking the door plate 34 in a door closing state is arranged between the second wheel plate 32 and the door plate 34. When the door panel 34 is in a door closing state, the door panel 34, the first wheel plate 31, the rotating wheel 33, the second wheel plate 32 and the third connecting structure enclose a closed frame shape; after the door locking structure is unlocked, the door plate 34 can be rotated to an open state, at this time, a frame shape with an opening is enclosed among the door plate 34, the first wheel plate 31, the rotating wheel 33, the second wheel plate 32 and the third connecting structure, and at this time, the steel wire rope 83 can be installed into the pulley from the opening.

Preferably, the door locking structure includes a lock rod 35 and a heart-shaped through hole 341 disposed on the door panel 34, one end of the lock rod 35 is provided with a heart-shaped lock block 351 capable of passing through the through hole 341, the second wheel plate 32 is provided with a pivot hole 321, and the other end of the lock rod 35 is inserted into the pivot hole 321 so that the other end of the lock rod 35 is pivoted with the second wheel plate 32. The upper end of the suspension arm 2 is connected with a connecting piece 7 extending downwards, the upper end of the connecting piece 7 is hinged with the upper end of the suspension arm 2, the lower end of the connecting piece 7 is provided with a threaded rod 71, and the lock rod 35 is provided with a threaded hole 352 which can be in threaded connection with the threaded rod 71 when the door plate 34 is locked by the heart-shaped lock block 351.

Referring to fig. 5, the operation method of installing the wire rope 83 connected with the hook 84 on the sheave assembly 3 is: the connecting piece 7 and the screwing lock rod 35 are not detached, so that the door plate 34, the first wheel plate 31, the rotating wheel 33 and the second wheel plate 32 rotate around the lock rod 35 for a certain angle, and the heart-shaped lock block 351 is aligned with the heart-shaped through hole 341, namely the door plate 34 is unlocked; then the door plate 34 is turned over and opened to form an opening, namely the steel wire rope 83 connected with the hook 84 is arranged in the pulley assembly 3, finally the door plate 34 is closed, and the lock rod 35 is rotated to lock the door plate 34.

The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.

Claims

1. A lifting arm assembly, characterized in that it comprises:

a base (1) that can be fixed to a vehicle;

the lower end of the suspension arm (2) is connected with the base (1) through a detachable first connecting structure;

the pulley assembly (3) is connected to the upper end of the suspension arm (2);

the suspension arm is characterized by comprising at least one inclined pull rod (4), wherein the upper end of the inclined pull rod (4) is connected with the suspension arm (2), and the lower end of the inclined pull rod (4) is connected with the base (1) through a detachable second connecting structure.

2. A lifting arm assembly as claimed in claim 1, characterized in that said first connecting structure comprises a slot (11) provided on said base (1), and an insert plate (5) hinged to the lower end of said arm (2) and inserted into said slot (11).

3. A lifting arm assembly as claimed in claim 2, wherein the base (1) has a horizontal plate (14) at the upper part thereof, the horizontal plate (14) is fixed with a cover plate (13), the cover plate (13) and the horizontal plate (14) together form a box structure with a front opening, the inner space of the box structure forms the insertion slot (11), the upper surface of the insertion plate (5) is provided with a hinge seat (51) hinged with the lifting arm (2), and the front side part of the cover plate (13) is further provided with a U-shaped notch (131) into which the hinge seat (51) can be inserted.

4. Lifting arm assembly according to claim 2, characterized in that the diagonal draw bars (4) have adjusting means enabling their length to be adjusted.

5. The lifting arm assembly as claimed in claim 4, wherein the diagonal draw bar (4) comprises a first draw bar (41) and a second draw bar (42) located below the first draw bar (41), the adjusting mechanism comprises a hexagonal rod (43) connected between the first draw bar (41) and the second draw bar (42), a first threaded rod (44) is arranged at the upper end of the hexagonal rod (43), a second threaded rod (45) is arranged at the lower end of the hexagonal rod, the thread directions of the first threaded rod (44) and the second threaded rod (45) are opposite, a threaded hole in threaded connection with the first threaded rod (44) is arranged at the lower end of the first draw bar (41), and a threaded hole in threaded connection with the second threaded rod (45) is arranged at the upper end of the second draw bar (42).

6. The lifting arm assembly as claimed in claim 1, wherein the second connecting structure comprises a bolt (6), a connecting seat (12) fixed on the base (1) and a U-shaped buckle (46) arranged at the lower end of the diagonal draw bar (4), two ends of the U-shaped buckle (46) are respectively provided with a first through hole, the connecting seat (12) is provided with a second through hole, the connecting seat (12) is inserted between two ends of the U-shaped buckle (46) and the second through holes are aligned with the two first through holes, and the bolt (6) passes through the second through hole and the two first through holes to enable the lifting arm (2) and the diagonal draw bar (4) to be hinged.

7. Lifting arm assembly according to claim 6, characterized in that one of the two first through holes is a threaded hole and that one end of the plug pin (6) is provided with an external thread for co-operating screwing with the threaded hole.

8. The lifting arm assembly as claimed in claim 1, wherein the pulley assembly (3) comprises a first pulley plate (31), a second pulley plate (32) and a rotating wheel (33) hinged between the first pulley plate (31) and the second pulley plate (32), the upper end of the first pulley plate (31) is hinged with a door plate (34), and an unlockable door locking structure capable of locking the door plate (34) in a door closing state is arranged between the second pulley plate (32) and the door plate (34).

9. The lifting arm assembly as claimed in claim 8, wherein the door locking structure comprises a locking rod (35) and a through hole (341) formed in the door panel (34), one end of the locking rod (35) is provided with a locking block (351) capable of passing through the through hole (341), and the other end of the locking rod (35) is pivotally connected to the second wheel plate (32).

10. A lifting arm assembly as claimed in claim 9, characterized in that the upper end of the lifting arm (2) is connected with a downwardly extending connector (7), the lower end of the connector (7) is provided with a threaded rod (71), and the lock rod (35) is provided with a threaded hole (352) which can be screwed with the threaded rod (71) when the lock block (351) is used for locking the door panel (34).