Suspension arm for transporting truck-mounted crane

Abstract

The utility model discloses a lazy arm for transporting a truck-mounted crane. The lazy arm comprises a lazy arm body, a lifting mechanism and a pushing mechanism, the lifting mechanism is installed on the suspension arm body and comprises a stand column, a first hydraulic cylinder is arranged on one side of the stand column, a first telescopic rod is installed on the first hydraulic cylinder, a lifting plate is fixed to the end, away from the first hydraulic cylinder, of the first telescopic rod, a bottom plate is fixed to the lower end of the stand column, and a pair of fixing columns is fixed to one end of each of the suspension arm body and the stand column; and the pushing mechanism is installed on the lifting plate and comprises a pair of fixing blocks, a lifting rod is fixed between the pair of fixing blocks, a rotating block is rotationally connected to the lifting rod, a second hydraulic cylinder is fixed to the rotating block, and a second telescopic rod is installed on the second hydraulic cylinder. Compared with the prior art, the suspension arm for transporting the truck-mounted crane has the advantages that the supporting position of the hydraulic cylinder to the suspension arm can be changed, so that the hydraulic cylinder can push up the suspension arm with smaller force, the pressure of the hydraulic cylinder is reduced, and the service life of the hydraulic cylinder is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane arms for truck-mounted cranes, and in particular relates to a crane arm for transporting truck-mounted cranes. Background Art

[0002] The transport truck crane includes a boom, a column, legs, a frame and other structures. It uses a hydraulic lifting and telescopic system to achieve the functions of lifting, rotating, and hoisting goods. It is usually installed on a truck. The use of truck cranes Truck cranes are widely used in many fields due to their flexibility, ease of operation, high efficiency and reliability. It can be used in construction sites, warehouses, docks, road maintenance, bridge construction, port loading and unloading and other occasions.

[0003] In the prior art, the boom of the transport truck crane is installed on a column, and the change of the boom angle is controlled by the extension and retraction of a hydraulic cylinder installed on the column. However, the installation position of the hydraulic cylinder on the column is close to one end of the boom, which requires a large force to push the hydraulic cylinder to change the angle of the boom, increasing the pressure of the hydraulic cylinder, thereby making the liquid oxygen cylinder easily damaged and reducing the service life of the hydraulic cylinder.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a kind of boom for transporting truck crane.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a boom for a transport truck crane, which can be used to solve the problem of high pressure of a hydraulic cylinder pushing the boom.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a boom for a transport truck crane, comprising: a boom body, a lifting mechanism and a pushing mechanism;

[0008] The lifting mechanism is installed on the boom body, and the lifting mechanism includes a column, a first hydraulic cylinder is arranged on one side of the column, a first telescopic rod is installed on the first hydraulic cylinder, and a lifting plate is fixed to one end of the first telescopic rod away from the first hydraulic cylinder;

[0009] The pushing mechanism is installed on the lifting plate, and the pushing mechanism includes a pair of fixed blocks, a lifting rod is fixed between the pair of fixed blocks, a rotating block is rotatably connected to the lifting rod, a second hydraulic cylinder is fixed on the rotating block, and a second telescopic rod is installed on the second hydraulic cylinder.

[0010] In one or more embodiments of the present invention, a bottom plate is fixed to the lower end of the column, and the bottom plate is used to support the column and the first hydraulic cylinder.

[0011] In one or more embodiments of the present invention, a pair of fixing columns are fixed to one end of the boom body and the column, and the fixing columns are used to support the connecting piece.

[0012] In one or more embodiments of the present invention, a plurality of the fixing columns are rotatably connected with connecting pieces, and the connecting pieces are used to support the fixing columns, so that the angle of the boom body can be changed.

[0013] In one or more embodiments of the present invention, a pair of fixing plates are fixed on the upright column, and the fixing plates are used to support the fixing rods.

[0014] In one or more embodiments of the utility model, a pair of fixing rods are fixed between the pair of fixing plates, the fixing rods are slidably connected to the lifting plates, and the fixing rods are used to support the lifting plates and can constrain the moving trajectory of the lifting plates.

[0015] In one or more embodiments of the utility model, a sliding cavity is excavated on the boom body, and the interior of the sliding cavity is used to place a sliding frame.

[0016] In one or more embodiments of the present invention, a sliding frame is slidably connected to the side wall of the sliding cavity, and the sliding frame is used to support the sliding rod, thereby supporting the connecting block.

[0017] In one or more embodiments of the present invention, a sliding rod is fixed on the sliding frame, and the sliding rod is used to support the connecting block and enable the connecting block to rotate on the sliding rod.

[0018] In one or more embodiments of the utility model, a connecting block is rotatably connected to the sliding rod, and the connecting block is fixedly connected to an end of the second telescopic rod away from the second hydraulic cylinder. The connecting block is used to support one end of the second telescopic rod, so that the second telescopic rod can push the sliding rod and the sliding frame during the telescopic process, so that the sliding frame can slide inside the sliding cavity.

[0019] Compared with the prior art, the boom of the transport truck crane of the utility model can change the supporting position of the hydraulic cylinder on the boom, so that the hydraulic cylinder can push up the boom with a smaller force, reduce the pressure of the hydraulic cylinder, and increase the service life of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a cross-sectional view of a boom for a transport truck crane in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure shown in FIG.

[0023] Figure 3 for Figure 1 A schematic diagram of the structure shown at B in FIG.

[0024] Figure 4 It is a three-dimensional diagram of a boom for a transport truck crane in one embodiment of the utility model.

[0025] Description of main reference numerals:

[0026] 1- boom body, 2- lifting mechanism, 201- column, 202- first hydraulic cylinder, 203- first telescopic rod, 204- lifting plate, 205- bottom plate, 206- fixed column, 207- connecting piece, 208- fixed plate, 209- fixed rod, 3- pushing mechanism, 301- fixed block, 302- lifting rod, 303- rotating block, 304- second hydraulic cylinder, 305- second telescopic rod, 306- sliding cavity, 307- sliding frame, 308- sliding rod, 309- connecting block. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, a boom for a transport truck crane in one embodiment of the utility model comprises: a boom body 1, a lifting mechanism 2 and a pushing mechanism 3.

[0029] like Figure 4As shown, the boom body 1 can lift the cargo and transport the cargo to a designated location. The lifting mechanism 2 is installed on the boom body 1 , and the lifting mechanism 2 includes a column 201 , and the column 201 is used to support a fixed column 206 .

[0030] like Figure 1 to Figure 2 As shown, a first hydraulic cylinder 202 is provided on one side of the column 201, and the first hydraulic cylinder 202 is used to control the first telescopic rod 203 to extend and retract. The first telescopic rod 203 is installed on the first hydraulic cylinder 202, and the first telescopic rod 203 can push the lifting plate 204 to lift and lower by extending and retracting.

[0031] like Figure 1 to Figure 2 As shown, a lifting plate 204 is fixed to one end of the first telescopic rod 203 away from the first hydraulic cylinder 202, and the lifting plate 204 is used to support a pair of fixed blocks 301 and can drive the pair of fixed blocks 301 to move up and down. A bottom plate 205 is fixed to the lower end of the column 201, and the bottom plate 205 is used to support the column 201 and the first hydraulic cylinder 202.

[0032] like Figure 4 As shown, a pair of fixed columns 206 are fixed to one end of the boom body 1 and the column 201, and the fixed columns 206 are used to support the connecting member 207. The connecting member 207 is rotatably connected to the plurality of fixed columns 206, and the connecting member 207 is used to support the fixed columns 206, so that the angle of the boom body 1 can be changed.

[0033] like Figure 4 As shown, a pair of fixing plates 208 are fixed on the column 201, and the fixing plates 208 are used to support fixing rods 209. A pair of fixing rods 209 are fixed between the pair of fixing plates 208, and the fixing rods 209 are slidably connected with the lifting plate 204. The fixing rods 209 are used to support the lifting plate 204 and can constrain the moving track of the lifting plate 204.

[0034] like Figures 1 to 4 As shown, the pushing mechanism 3 is installed on the lifting plate 204, and the pushing mechanism 3 includes a pair of fixed blocks 301, and the fixed blocks 301 are used to support the lifting rod 302. The lifting rod 302 is fixed between the pair of fixed blocks 301, and the lifting rod 302 is used to support the rotating block 303, and enables the rotating block 303 to rotate on the lifting rod 302.

[0035] like Figures 1 to 3As shown, the lifting rod 302 is rotatably connected with a rotating block 303, and the rotating block 303 is used to support the second hydraulic cylinder 304. The second hydraulic cylinder 304 is fixed on the rotating block 303, and the second hydraulic cylinder 304 is used to control the second telescopic rod 305 to extend and retract. The second hydraulic cylinder 304 is installed with the second telescopic rod 305, and the second telescopic rod 305 can push the connecting block 309 to move, thereby pushing the sliding rod 308 and the sliding frame 307 to move.

[0036] like Figures 1 to 3 As shown, a sliding cavity 306 is excavated on the boom body 1, and the sliding cavity 306 is used to place a sliding frame 307. The sliding frame 307 is slidably connected to the side wall of the sliding cavity 306, and the sliding frame 307 is used to support the sliding rod 308, so as to support the connecting block 309.

[0037] A pair of grooves are cut on the side wall of the sliding cavity 306, and the grooves are used to place and support the bumps. The side wall of the groove is slidably connected with a bump, which can support the sliding frame 307 and constrain the moving track of the sliding frame 307.

[0038] like Figure 3 As shown, a sliding rod 308 is fixed on the sliding frame 307, and the sliding rod 308 is used to support the connecting block 309, and the connecting block 309 can rotate on the sliding rod 308. The connecting block 309 is rotatably connected to the sliding rod 308, and the connecting block 309 is fixedly connected to the end of the second telescopic rod 305 away from the second hydraulic cylinder 304. The connecting block 309 is used to support one end of the second telescopic rod 305, so that the second telescopic rod 305 can push the sliding rod 308 and the sliding frame 307 during the telescopic process, so that the sliding frame 307 can slide inside the sliding cavity 306.

[0039] When in use, the first hydraulic cylinder 202 is started, and the first hydraulic cylinder 202 can control the first telescopic rod 203 to extend and retract, thereby controlling the lifting plate 204 to lift and lower, and the lifting plate 204 can drive a pair of fixed blocks 301 to lift and lower, thereby driving the lifting rod 302, the rotating block 303, and one end of the second hydraulic cylinder 304 to move, and during the lifting process, the rotating block 303 and the second hydraulic cylinder 304 can rotate on the lifting rod 302, so that the angle of the second hydraulic cylinder 304 and the second telescopic rod 305 changes;

[0040] When one end of the second hydraulic cylinder 304 moves, it can push the second telescopic rod 305, the connecting block 309, the sliding rod 308 and the sliding frame 307 to move, so that the sliding frame 307 can be supported on the side wall of the sliding cavity 306, and the sliding frame 307 stops moving, so that one end of the second telescopic rod 305 can be fixed, so that the supporting point of the second telescopic rod 305, the connecting block 309, the sliding rod 308 and the sliding frame 307 on the boom body 1 is changed, so that the force required for the second telescopic rod 305 to push the boom body 1 to move can be reduced;

[0041] The second hydraulic cylinder 304 is started and can control the second telescopic rod 305 to extend and retract, thereby pushing the connecting block 309 to move. The connecting block 309 can transfer force to the sliding rod 308 and the sliding frame 307, thereby pushing the boom body 1, so that the angle of the boom body 1 can be changed.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A boom for a transport truck crane, characterized in that: include: Boom body; A lifting mechanism is installed on the boom body, the lifting mechanism includes a column, a first hydraulic cylinder is arranged on one side of the column, a first telescopic rod is installed on the first hydraulic cylinder, and a lifting plate is fixed to one end of the first telescopic rod away from the first hydraulic cylinder; The pushing mechanism is installed on the lifting plate, and the pushing mechanism includes a pair of fixed blocks, a lifting rod is fixed between the pair of fixed blocks, a rotating block is rotatably connected to the lifting rod, a second hydraulic cylinder is fixed on the rotating block, and a second telescopic rod is installed on the second hydraulic cylinder.

2. The boom for a transport truck crane according to claim 1, characterized in that: A bottom plate is fixed at the lower end of the column.

3. The boom for a transport truck crane according to claim 1, characterized in that: A pair of fixing columns are fixed on one end of the boom body and the column.

4. The boom for a transport truck crane according to claim 3, characterized in that: A plurality of the fixing columns are rotatably connected with connecting pieces.

5. The boom for a transport truck crane according to claim 1, characterized in that: A pair of fixing plates are fixed on the upright posts.

6. The boom for a transport truck crane according to claim 5, characterized in that: A pair of fixing rods are fixed between the pair of fixing plates, and the fixing rods are slidably connected to the lifting plates.

7. The boom for a transport truck crane according to claim 1, characterized in that: A sliding cavity is bored on the boom body.

8. The boom for a transport truck crane according to claim 7, characterized in that: A sliding frame is slidably connected to the side wall of the sliding cavity.

9. The boom for a transport truck crane according to claim 8, characterized in that: A sliding rod is fixed on the sliding frame.

10. The boom for a transport truck crane according to claim 9, characterized in that: A connecting block is rotatably connected to the sliding rod, and the connecting block is fixedly connected to an end of the second telescopic rod away from the second hydraulic cylinder.

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