CN210001483U - Lifting arm assembly and lorry-mounted crane - Google Patents

Abstract

The application provides cargo boom assemblies and lorry-mounted cranes, the cargo boom assembly comprises a cargo boom and a hoisting mechanism, the cargo boom comprises a basic arm and at least telescopic arms sleeved in the basic arm, the hoisting mechanism is connected to the tail of the basic arm, so that a hoisting rope on the hoisting mechanism is wound from the tail of the basic arm to the head of the telescopic arms through the upper parts of the basic arm and the telescopic arms, the lorry-mounted crane comprises the above-mentioned cargo boom assembly, a hoisting rope and a lifting appliance, the end of the hoisting rope is wound on the hoisting mechanism, and the other end of the hoisting rope is wound from the upper parts of the basic arm and the telescopic arms to the head of the telescopic arms and then is connected with the lifting appliance.

Description

Boom assembly and truck mounted crane

technical field

The present application relates to the field of construction machinery, in particular to a boom assembly and a truck mounted crane.

Background technique

In the prior art, a truck mounted crane usually includes a jib, a hoisting mechanism, a wire rope, a spreader and a column. The jib includes a base arm and a telescopic arm sleeved in the base arm. The arm is pivoted on the upright column, the hoisting mechanism is installed under the basic arm or in the upright column, one end of the wire rope is wound on the hoisting mechanism, and the other end of the wire rope is wound from the lower part of the basic arm and the telescopic arm to the head of the telescopic arm. Spreader connection. Since the hoisting mechanism is arranged under the boom or in the column, it is not convenient to install or maintain the hoisting mechanism, nor to check the disorder of the wire rope.

Utility model content

In view of this, the main purpose of the present application is to provide a boom assembly and a truck mounted crane to solve the problem of inconvenient installation or maintenance of the hoisting mechanism in the prior art.

In order to achieve the above-mentioned purpose, the technical scheme of the present application is achieved in this way:

One aspect of the present application provides a boom assembly, the boom assembly includes a boom and a hoisting mechanism, the boom includes a base arm and at least one telescopic arm sleeved in the base arm, The hoisting mechanism is installed at the tail of the basic arm, so that the hoisting rope on the hoisting mechanism is wound from the tail of the basic arm to the upper part of the telescopic arm through the basic arm and the telescopic arm. head.

Further, the boom assembly further includes a first connecting piece, and the hoisting mechanism and the basic arm are detachably connected through the first connecting piece.

Further, the basic arm includes an arm body, a mounting plate and a reinforcing plate arranged at the tail of the arm body, the mounting plate is connected with the arm body, and the reinforcing plate is respectively connected with the arm body and the reinforcing plate. The mounting plate is connected; the first connecting piece detachably connects the hoisting mechanism and the mounting plate.

Further, the basic arm further includes a positioning plate arranged at the tail of the arm body, the mounting plate is provided with a positioning hole, the positioning plate passes through the positioning hole and is connected with the mounting plate, the The positioning plate is clamped with the hoisting mechanism.

Further, the hoisting mechanism includes an installation seat and a hoisting assembly, the hoisting assembly is arranged on the installation seat, and the installation seat is connected with the tail of the basic arm.

Further, the mounting seat includes a first mounting seat and a second mounting seat, the first mounting seat is detachably connected to the basic arm, and the second mounting seat is detachable from the first mounting seat connected, the hoisting assembly is arranged on the second mounting seat.

Further, the first mounting seat includes two side plates respectively arranged on both sides of the basic arm, a support plate arranged on each of the side plates, and a connecting plate connecting the two side plates; the A step portion connecting the support portion to the support portion is formed on the side plate, one end of the support plate has an insertion port, the support plate is arranged on the support portion, and is inserted into the step through the insertion port The second mounting seat is detachably arranged on the support plate.

Further, the boom assembly further includes a plurality of limiting members for limiting the position of the lifting rope, and the limiting members are respectively arranged on the basic arm and the head of each segment of the telescopic arm.

Another aspect of the present application provides a truck mounted crane, the truck mounted crane includes the boom assembly described in any one of the above, a hoisting rope and a spreader, and one end of the hoisting rope is wound around the hoist In structure, the other end of the hoisting rope is wound from the upper part of the basic arm and the telescopic arm to the head of the telescopic arm and then connected to the spreader.

Further, the truck-mounted crane further includes a column, an axle hole is provided at the tail of the basic arm, the basic arm is pivotally connected to the column through the axle hole, and the center of gravity of the hoisting mechanism is located in the axle hole The side away from the base arm.

In the hoisting arm assembly and the truck-mounted crane provided by the present application, the hoisting mechanism is installed on the tail of the basic arm, which is convenient for installation or maintenance of the hoisting mechanism. The upper part of the hoisting arm is wound to the head of the telescopic arm, which is convenient to check whether the hoisting rope is in disorder.

Description of drawings

FIG. 1 is a schematic structural diagram of a boom assembly in an embodiment of the application, wherein a hoisting rope and a spreader are also shown;

Fig. 2 is the exploded view at A place in Fig. 1;

FIG. 3 is a side view of the boom assembly in the embodiment of the application, wherein a hoisting rope and a spreader are also shown;

FIG. 4 is a top view of the boom assembly in the embodiment of the application, wherein the lifting rope and the spreader are also shown.

Reference numerals: boom assembly 100; boom 1; basic arm 11; arm body 111; mounting plate 112; positioning hole 1121; reinforcing plate 113; positioning plate 114; shaft hole 115; telescopic arm 12; ; Mounting seat 21; First mounting seat 211; Side plate 2111; Support part 21111; Step part 21112; Support plate 2112; 3; Limiter 4; Lifting rope 200; Spreader 300.

Detailed ways

The present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. In the description of this application, the orientation or positional relationship of "head", "tail", "upper" and "lower" is based on the normal use state of the truck-mounted crane. It is understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a reference to the present application. limit.

1-4, the present application provides a boom assembly 100, including a boom 1 and a hoisting mechanism 2, the boom 1 includes a base arm 11 and at least one telescopic arm 12 sleeved in the base arm 11, The hoisting mechanism 2 is connected to the tail of the basic arm 11 , so that the hoisting rope 200 on the hoisting mechanism 2 is wound from the tail of the basic arm 11 to the head of the telescopic arm 12 through the upper part of the basic arm 11 and the telescopic arm 12 .

In the hoisting arm assembly and the truck-mounted crane provided by the present application, the hoisting mechanism is installed on the tail of the basic arm, which is convenient for installation or maintenance of the hoisting mechanism. The upper part of the hoisting arm is wound to the head of the telescopic arm, which is convenient to check whether the hoisting rope is in disorder. In addition, the hoisting mechanism has a large moment from the point of force, and the hoisting mechanism can pull up the hoisted object with a small pulling force.

Further, the boom assembly 100 further includes a first connecting piece 3 , and the hoisting mechanism 2 and the basic arm 11 are detachably connected through the first connecting piece 3 .

The hoisting mechanism and the basic arm are detachably connected through the first connecting piece, which is convenient for installation and maintenance of the hoisting mechanism. Specifically, the first connector 3 can be optionally a fastener or a pin, such as a bolt and a nut.

Further, the basic arm 11 includes an arm body 111, a mounting plate 112 and a reinforcing plate 113 arranged at the rear of the arm body 111, the mounting plate 112 is connected to the arm body 111, and the reinforcing plate 113 is respectively connected to the arm body 111 and the mounting plate 112; The first connecting piece 3 connects the hoisting mechanism 2 and the mounting plate 112 in a detachable manner.

The hoisting mechanism is installed by the mounting plate, because the volume of the mounting plate is relatively small, which is convenient for processing and manufacturing; the reinforcing plate is used to strengthen the connection between the arm body and the mounting plate, and improve the stability of the structure.

Further, the basic arm 11 also includes a positioning plate 114 disposed at the rear of the arm body 111 , the mounting plate 112 is provided with a positioning hole 1121 , the positioning plate 114 passes through the positioning hole 1121 and is connected to the mounting plate 112 , and the positioning plate 114 is connected to the hoisting mechanism 2 snaps.

The hoisting mechanism is clamped with the positioning plate, and the hoisting mechanism is positioned first through the positioning function of the positioning plate, and then the hoisting mechanism and the mounting plate are detachably connected through the first connecting piece, which is convenient for the accurate and fast installation of the hoisting mechanism.

Further, the hoisting mechanism 2 includes an installation seat 21 and a hoisting assembly 22 , the hoisting assembly 22 is arranged on the installation seat 21 , and the installation seat 21 is connected with the tail of the basic arm 11 .

The hoisting assembly is arranged on the mounting seat, and the mounting seat is connected with the tail of the basic arm, so as to facilitate the installation and maintenance of the hoisting assembly. It can be understood that, the connection between the mounting seat and the tail of the basic arm can be a fixed connection by welding, or a detachable movable connection such as screw connection or pin connection.

Further, the mounting seat 21 includes a first mounting seat 211 and a second mounting seat 212, the first mounting seat 211 is detachably connected to the base arm 11, the second mounting seat 212 is detachably connected to the first mounting seat 211, and the roll The lift assembly 22 is disposed on the second mounting seat 212 . Specifically, the first mounting seat 211 and the second mounting seat 212 are connected by a second connecting member. The second connector can optionally be a fastener or a pin.

The second mounting seat is detachably connected to the first mounting seat, which is convenient for the installation and removal of the hoisting assembly from the first mounting seat, and the first mounting seat is detachably connected to the basic arm, which is convenient for the hoisting mechanism to be removed from the basic arm. Installation and removal.

Further, the first mounting seat 211 includes two side plates 2111 respectively arranged on both sides of the basic arm 11, a support plate 2112 arranged on each side plate 2111, and a connecting plate 2113 connecting the two side plates 2111; the side plates A support portion 21111 and a step portion 21112 connected to the support portion 21111 are formed on the 2111, one end of the support plate 2112 has a plug-in port 21121, the support plate 2112 is arranged on the support portion 21111, and is inserted on the step portion 21112 through the plug-in port 21121; The two mounting seats 212 are detachably arranged on the support plate 2112 .

The step part of the side plate is connected to the arm body, the support plate is arranged on the support part, and is inserted on the step part through the plug interface, the second mounting seat is connected with the support part through the support plate, and the support plate is used to support the hoisting The assembly and the second mounting seat, the support plate has a large bearing area, which avoids the hoisting assembly and the second mounting seat being directly connected to the support portion, and the reaction force of the support portion directly acts on the second mounting seat, resulting in structural deformation; The support plate is inserted on the step part through the plug-in port, which is convenient for the connection between the support plate and the side plate; The force on the small side plate prevents the side plate from being deformed due to excessive force.

Specifically, the first connecting piece 3 can detachably connect the stepped portion 21112 to the tail portion of the basic arm 11 , and further, the first connecting piece 3 can also detachably connect the stepped portion 21112 to the mounting plate 112 .

Further, the boom assembly 100 further includes a plurality of limiting members 4 for limiting the position of the lifting rope 200 , and the limiting members 4 are respectively disposed on the base arm 11 and the head of each telescopic arm 12 . Specifically, the limiter 4 may be provided at the middle part and the head of the basic arm 11 , and the limiter 4 may be provided at the head of each telescopic arm.

The hoisting rope on the hoisting mechanism is wound from the tail of the basic arm to the head of the telescopic arm through the upper part of the basic arm and the telescopic arm. During use, the hoisting rope is easy to shake, and the limiter is used to limit the shaking of the hoisting rope. , on the one hand, it is convenient for better hoisting operation, and on the other hand, it also reduces the friction between the hoisting rope and the jib.

Referring to FIG. 1 , the present application also provides a truck mounted crane, including the above-mentioned boom assembly 100 , a hoisting rope 200 and a spreader 300 , one end of the hoisting rope 200 is wound on the hoisting mechanism 2 , and the other end of the hoisting rope 200 The upper part of the basic arm 11 and the telescopic arm 12 is wound to the head of the telescopic arm 12 and then connected to the spreader 300 .

The other end of the hoisting rope is wound from the upper part of the basic arm and the telescopic arm to the head of the telescopic arm and then connected with the spreader, which is convenient for the installation and use of the spreader. Specifically, the hoisting rope may be a steel wire rope or a carbon fiber rope.

Further, the truck mounted crane also includes a column (not shown), a shaft hole 115 is provided at the tail of the basic arm 11, the basic arm 11 is pivotally connected to the column through the shaft hole 115, and the center of gravity of the hoisting mechanism 2 is located in the shaft hole 115 away from the basic arm. 11 side.

The center of gravity of the hoisting mechanism is located on the side of the shaft hole away from the basic arm. When the jib assembly is lifted and objects are hoisted, the column is subjected to the force generated by the object to be hoisted toward the head of the basic arm and the force generated by the hoisting mechanism toward the tail of the basic arm. The two forces act in opposite directions, which can offset part of the force and reduce the force on the column.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (10)

1. A boom assembly, characterized in that the boom assembly comprises a boom and a hoisting mechanism, and the boom comprises a base arm and at least one telescopic arm sleeved in the base arm , the hoisting mechanism is connected to the tail of the basic arm, so that the hoisting rope on the hoisting mechanism is wound from the tail of the basic arm to the telescopic arm through the basic arm and the upper part of the telescopic arm 's head. 2 . The boom assembly according to claim 1 , wherein the boom assembly further comprises a first connecting piece, and the hoisting mechanism and the basic arm are detachable through the first connecting piece. 3 . connect. 3 . The boom assembly according to claim 2 , wherein the basic arm comprises an arm body, and a mounting plate and a reinforcing plate arranged at the tail of the arm body, the mounting plate is connected to the arm body. 4 . The reinforcing plate is respectively connected with the arm body and the mounting plate; the first connecting piece detachably connects the hoisting mechanism and the mounting plate. 4. The boom assembly according to claim 3, wherein the basic arm further comprises a positioning plate disposed at the tail of the arm body, the mounting plate is provided with positioning holes, and the positioning plate penetrates The positioning plate passes through the positioning hole and is connected with the mounting plate, and the positioning plate is clamped with the hoisting mechanism. 5. The boom assembly according to any one of claims 1 to 4, wherein the hoisting mechanism comprises a mounting seat and a hoisting assembly, the hoisting assembly is arranged on the mounting seat, and the The mount is connected to the tail of the base arm. 6. The boom assembly according to claim 5, wherein the mounting seat comprises a first mounting seat and a second mounting seat, the first mounting seat is detachably connected to the base arm, and the The second mounting seat is detachably connected to the first mounting seat, and the hoisting assembly is arranged on the second mounting seat. 7 . The boom assembly according to claim 6 , wherein the first mounting seat comprises two side plates respectively disposed on both sides of the base arm, and a a support plate and a connecting plate connecting the two side plates; a support part and a step part connected to the support part are formed on the side plate, one end of the support plate has a plug-in port, and the support plate is arranged on the The second mounting seat is detachably arranged on the support plate. 8. The boom assembly according to any one of claims 1 to 4, wherein the boom assembly further comprises a plurality of limiters for limiting the position of the lifting rope, and the limiter Positioning pieces are respectively arranged on the basic arm and the head of each segment of the telescopic arm. 9 . A truck mounted crane, characterized in that the truck mounted crane comprises the boom assembly according to any one of claims 1 to 8 , a hoisting rope and a spreader, and one end of the hoisting rope is wound around On the hoisting mechanism, the other end of the hoisting rope is wound from the upper part of the basic arm and the telescopic arm to the head of the telescopic arm and then connected to the spreader. 10 . The truck mounted crane according to claim 9 , wherein the truck mounted crane further comprises an upright column, an axle hole is provided at the tail of the basic arm, and the basic arm pivots with the upright column through the axle hole. 11 . The center of gravity of the hoisting mechanism is located on the side of the shaft hole away from the basic arm.

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