CN117945266A

CN117945266A - Movable crane

Info

Publication number: CN117945266A
Application number: CN202410350160.2A
Authority: CN
Inventors: 朱绍猛; 张海英; 吕刚; 张翠; 魏丽萍; 贾海霞; 李辰; 田清祥
Original assignee: Shandong Sunway Steel Building Co ltd
Current assignee: Shandong Sunway Steel Building Co ltd
Priority date: 2024-03-26
Filing date: 2024-03-26
Publication date: 2024-04-30
Anticipated expiration: 2044-03-26

Abstract

The invention relates to the technical field of cranes, in particular to a movable crane. The technical proposal comprises: the lifting arm comprises a movable body and a lifting arm arranged on the movable body, and the lifting arm comprises a bearing stabilizing mechanism, wherein the bearing stabilizing mechanism is used for supporting a weight lifted by the lifting arm in the moving process of the movable body so as to ensure the balance of the movable body. According to the invention, the bearing and stabilizing mechanism is arranged at the head part of the crane and moves along with the crane, when the crane lifts a heavy object, the heavy object can be supported from the lower part through the bearing and stabilizing mechanism, so that the whole crane cannot be unbalanced due to lifting of the heavy object, and then the crane can continue to move, and the problem that the traditional mobile crane needs to stop in situ in order to ensure the stability of the crane body when lifting the heavy object is solved; by designing the support table for holding the weight to be vertically rotatable as well as horizontally rotatable to be opened, sufficient lifting space can be provided for the cargo.

Description

Movable crane

Technical Field

The invention relates to the technical field of cranes, in particular to a movable crane.

Background

A crane is a machine for carrying heavy objects in various production and construction projects, and has different types and different names, such as a crown block, a crane and the like, according to different application scenes, but is generally divided into a fixed type and a movable type. The fixed crane has higher stability and limited application range, and the object is transported only by rotating the boom. The movable crane has the advantages that the crane body is arranged on a vehicle, the crane obtains a moving function through the movement of the vehicle, the upper bearing limit is limited by the bearing capacity of the vehicle, the movable crane is suitable for carrying small and medium-sized objects, and the movable crane can be used in various different scenes and is more flexible to use.

Based on the mobile crane, in order to ensure that the machine body is kept stable when heavy objects are lifted, the vehicle can be fixed in place through the anchor rod, so that the machine body can not continuously realize the moving function when the heavy objects are lifted. Therefore, the invention provides a long-acting movable crane.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides a movable crane.

The technical scheme of the invention is as follows: the movable crane comprises a movable machine body and a suspension arm arranged on the movable machine body, and comprises a bearing and stabilizing mechanism, wherein the bearing and stabilizing mechanism is used for supporting a weight lifted by the suspension arm in the moving process of the movable machine body so as to ensure the balance of the movable machine body; the bearing stabilizing mechanism comprises a movable base and a bearing assembly arranged at the upper part of the movable base, wherein the bearing assembly comprises a bearing table frame body and a bearing table, the bearing table frame body is in supporting relation with the movable base, and the bearing table is vertically and rotatably connected with the bearing table frame body so that a heavy object can conveniently have enough lifting space; the bearing stabilizing mechanism comprises a vertical rotating mechanism for driving the bearing table to vertically rotate; the support assembly is equipped with a pair of and along vertical axis horizontal rotation altogether, the support stabilizing mean is including driving two support assembly reverse horizontal rotation in order to further enlarge the horizontal opening and shutting mechanism in space that rises and falls, horizontal opening and shutting mechanism is including providing rotary power's slip table through the translation, just the translation of slip table is driven by the vertical rotation of bearing platform.

Optionally, vertical rotary mechanism includes with bearing platform framework fixed connection's cylinder mount pad, tip and cylinder mount pad rotate the cylinder of being connected and with bearing platform fixed connection and with the connecting rod of cylinder piston rod tip activity cup joint.

Optionally, the horizontal opening and closing mechanism comprises a guide rod fixedly connected with the movable base and movably penetrating through the sliding table and a first reset spring movably sleeved with one end of the guide rod and used for pushing the sliding table to translate and reset by elasticity.

Optionally, the horizontal opening and closing mechanism further comprises a driven opening and closing assembly for realizing the rotary opening and closing of the bearing assembly through the translation of the sliding table, wherein the driven opening and closing assembly comprises a supporting upright fixedly connected with the movable base, a first rotating shaft strip fixed at the top end of the supporting upright, a reinforcing rod with one end fixedly connected with the first rotating shaft strip and a second rotating shaft strip fixedly connected with the other end of the reinforcing rod, and the second rotating shaft strip is rotationally connected with the frame body of the bearing table.

Optionally, the driven opening and closing assembly further comprises a connecting bar fixedly connected with the supporting table frame body, a traction rod with one end movably sleeved with the connecting bar and the other end rotatably connected with the first rotating shaft bar, and a pushing block fixed at the top of the sliding table and used for horizontally pushing the two traction rods to rotate and open, wherein the traction rod drives the supporting assembly to rotate and open.

Optionally, the driven opening and closing assembly further comprises a guide post, wherein two ends of the guide post are fixedly connected with the first rotating shaft strip and the second rotating shaft strip respectively and movably penetrate through the pushing block, and a second reset spring, which is movably sleeved with one end of the guide post and used for pushing the pushing block to horizontally reset by elasticity, is movably sleeved with one end of the guide post.

Optionally, the driven opening and closing assembly further comprises a jack post fixedly connected with the pushing block and used for pushing the bearing assembly to rotate and close when the pushing block is in translation and reset.

Optionally, support slide bar fixedly connected with in bearing platform framework bottom, the spout that supplies support slide bar bottom to slide with the circular arc route is seted up to the removal base upper surface.

Optionally, the bottom of the movable base is connected with a travelling wheel which enables the bearing stabilizing mechanism to move along with the movable body.

Optionally, the bearing stabilizing mechanism includes a connecting seat with one end fixedly connected with the mobile base and the other end fixedly connected with the mobile body.

Compared with the prior art, the invention has the following beneficial technical effects:

According to the application, the bearing and stabilizing mechanism is arranged at the head part of the crane and moves along with the crane, when the crane lifts a heavy object, the heavy object can be supported from the lower part through the bearing and stabilizing mechanism, so that the whole crane cannot be unbalanced due to lifting of the heavy object, and then the crane can continue to move, and the problem that the traditional mobile crane needs to stop in situ in order to ensure the stability of the crane body when lifting the heavy object is solved;

further, by designing the holding table for holding the weight to be vertically rotatable and horizontally rotatable to be opened, a sufficient lifting space can be provided for the cargo.

Drawings

FIG. 1 is a schematic diagram of a mobile crane;

FIG. 2 is a schematic view of the support stabilizer of FIG. 1;

FIG. 3 is a schematic view of the support table of FIG. 2 after being opened by vertical rotation and horizontal rotation;

FIG. 4 is a schematic illustration of the connection of the vertical rotation mechanism to the support assembly of FIG. 3;

FIG. 5 is a schematic illustration of the connection of the support assembly of FIG. 2 to a horizontal opening and closing mechanism;

fig. 6 is a schematic structural view of the driven opening and closing assembly in fig. 5.

Reference numerals: 100. a moving body;

200. a suspension arm;

300. A bearing stabilizing mechanism;

301. a movable base; 3011. a chute; 3012. a travelling wheel;

302. A support assembly; 3021. a support table frame; 30211. supporting a slide bar; 3022. a support table;

303. A vertical rotation mechanism; 3031. a cylinder mounting seat; 3032. a cylinder; 3033. a connecting rod;

304. A horizontal opening and closing mechanism;

3041. A sliding table;

3042. A guide rod;

3043. A first return spring;

3044. A driven opening and closing assembly; 30441. a support column; 30442. a first spool bar; 30443. a reinforcing rod; 30444. a second rotating shaft bar; 30445. a connecting strip; 30446. a traction rod; 30447. pushing the block; 30448. a guide post; 30449. a second return spring; 30450. a top column;

305. and a connecting seat.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 6, the mobile crane according to the present invention includes a mobile body 100 and a boom 200 mounted on the mobile body 100. The mobile body 100 includes a lower mobile vehicle and a main body portion mounted on the vehicle. One end of the suspension arm 200 is rotatably connected with the mobile body 100, and the other end is provided with a lifting hook for lifting cargoes. In addition, the crane further comprises a long-process air cylinder, the shell end of the air cylinder is rotationally connected with the mobile body 100, and the piston rod of the air cylinder is rotationally connected with the suspension arm 200, so that the suspension arm 200 can be driven to rotate to achieve the purpose of lifting when the piston rod of the air cylinder stretches out and draws back, and the crane belongs to the prior art of the existing mobile crane and is not described in detail herein.

On the basis of the prior art, the crane of the invention further comprises a bearing stabilizing mechanism 300, wherein the bearing stabilizing mechanism 300 is arranged at the head part of the crane and moves along with the crane. When the crane lifts the weight, the weight can be supported by the lower part through the supporting and stabilizing mechanism 300, so that the whole crane cannot be unbalanced due to the lifting of the weight, and then the crane can continue to move, and the problem that the traditional mobile crane needs to stop in situ in order to ensure the stability of the crane body when lifting the weight is solved.

Specifically, the support stabilization mechanism 300 includes a mobile base 301, a support assembly 302, a vertical rotation mechanism 303, a horizontal opening and closing mechanism 304, and a connection base 305.

One side of the connecting seat 305 is welded and fixed with the movable base 301, and the other side of the connecting seat 305 can be fixedly connected with the head part of the movable body 100 through a detachable connecting piece such as a bolt, so that the whole bearing stabilizing mechanism 300 is mounted on the head part and can be detached as required. Four traveling wheels 3012 are fixedly connected to the bottom of the movable base 301, and the supporting and stabilizing mechanism 300 can move along with the movable body 100 through the traveling wheels 3012.

The racking assemblies 302 are paired and rotated horizontally along a vertical axis, and a single racking assembly 302 includes a racking platform frame 3021 and a racking platform 3022. The bottom of the supporting table frame 3021 is fixedly connected with four supporting sliding bars 30211, and a chute 3011 for sliding the bottom end of the supporting sliding bar 30211 in an arc path is provided on the upper surface of the moving base 301, and the arc path takes a rotating shaft of a second rotating shaft bar 30444 described below as a circle center. The middle part of the outer arc of the support platform 3022 is vertically rotatably connected with the support platform frame 3021 through a rotating shaft, and when the support platform rotates downwards as shown in fig. 3, the support platform can conveniently lift up and down.

The vertical rotation mechanism 303 is configured to drive the support platform 3022 to vertically rotate as described above. The device comprises an air cylinder mounting seat 3031 fixedly connected with the lower surface of a supporting table frame 3021, an air cylinder 3032 with a shell end rotatably connected with the bottom end of the air cylinder mounting seat 3031, and a connecting rod 3033 fixedly connected with the lower surface of the supporting table 3022 and movably sleeved with the end part of a piston rod of the air cylinder 3032. The support stage 3022 can be driven to rotate to the state shown in fig. 2 and 3 by the extension and retraction of the piston rod of the air cylinder 3032.

The horizontal opening and closing mechanism 304 is used to drive the two sets of support assemblies 302 to open left and right as shown in fig. 3 to further expand the lifting space, and the horizontal opening and closing mechanism 304 is driven by the above-mentioned rotation of the support platform 3022;

Specifically, the horizontal opening and closing mechanism 304 includes a sliding table 3041 that can move horizontally on the upper surface of the moving base 301, a guide rod 3042 that is fixedly connected with the moving base 301 and movably penetrates through the sliding table 3041, and a first return spring 3043 that is movably sleeved with one end of the guide rod 3042 and is used for pushing the sliding table 3041 to move horizontally and return by elastic force. One side of the sliding table 3041 is of a large-radian inclined surface structure, so that the bearing table 3022 can be contacted with the sliding table 3041 when vertically rotated, and the sliding table 3041 can obtain translational power. When the support platform 3022 rotates upwards to reset, the sliding table 3041 can be driven to translate and reset by the elastic thrust of the first reset spring 3043;

The horizontal opening and closing mechanism 304 further comprises a driven opening and closing component 3044 for realizing the rotary opening and closing of the bearing component 302 through the translation of the sliding table 3041, the driven opening and closing component 3044 comprises a supporting upright post 30441, a first rotating shaft bar 3042, a reinforcing rod 3043 and a second rotating shaft bar 30444, the bottom end of the supporting upright post 30441 is fixedly connected with the upper surface of the movable base 301, the first rotating shaft bar 3042 is fixed to the top end of the supporting upright post 30441, one end of the reinforcing rod 3043 is fixedly connected with the first rotating shaft bar 3042, the second rotating shaft bar 30444 is fixedly connected with the other end of the reinforcing rod 3043, two vertical rotating shafts are arranged on the second rotating shaft bar 30444, and the two vertical rotating shafts are respectively connected with the corresponding bearing table frame 3021 in a rotating manner;

The driven opening and closing component 3044 further comprises a connecting bar 30445 fixedly connected with the outer ring surface of the supporting table frame 3021, a traction rod 30446 with one end movably sleeved with the connecting bar 30445 and the other end rotatably connected with the first rotating shaft bar 3042, and a pushing block 30447 fixed on the top of the sliding table 3041 and used for translationally pushing the two traction rods 30446 to rotate and open, wherein the traction rod 30446 drives the supporting component 302 to rotate and open together when rotating and opening;

The driven opening and closing component 3044 further comprises a guide post 30448, a second reset spring 3049 and a first reset spring 3043, wherein the two ends of the guide post 30448 are fixedly connected with the first rotating shaft bar 3042 and the second rotating shaft bar 30444 respectively and movably penetrate through the push block 30447, the second reset spring 3049 is movably sleeved with one end of the guide post 30448 and used for pushing the push block 30447 to move and reset in a sliding mode, and the second reset spring 3049 has the same function as the first reset spring 3043;

the driven opening and closing assembly 3044 also includes a knob 30450 fixedly coupled to the push block 30447 for pushing the support assembly 302 to rotate closed upon translational repositioning of the push block 30447.

The working principle of the embodiment is as follows: when a crane needs to hoist heavy objects, in order to ensure the stability of the machine body, the machine body is usually fixed in place by using an anchor rod. In this embodiment, the lifting weight can be vertically supported by the support stabilizing mechanism 300 shown in fig. 1-2, so that the stability of the machine body is ensured, and the machine body can be moved without stopping in place even when lifting the weight.

In addition, in the conventional crane, the boom 200 can be rotated vertically and horizontally, so that the boom 200 can be rotated away from the upper part of the bearing and stabilizing mechanism 300 when the goods are lifted, and then rotated to the upper part of the bearing and stabilizing mechanism 300 after the goods are lifted, but in the lifting process, the stability of the whole machine body is poor and the problem of rollover is easy to occur due to the fact that the boom 200 rotates to one side. For this reason, the supporting and stabilizing mechanism 300 is further improved to have the function of supporting the cargo, and the lifting and falling of the cargo is not affected. Specifically, taking the example of placing the goods as an illustration, referring to fig. 3-4, at this time, the piston rod of the cylinder 3032 is contracted to drive the support platform 3022 to rotate downward, so that the goods lifted by the lifting hook on the boom 200 can fall through the gap between the two support platforms 3022. In addition, when the support platform 3022 rotates downward, referring to fig. 3 and 5-6, the support platform 3022 contacts with the inclined surface of the sliding table 3041, so that the sliding table 3041 obtains a pushing force in a horizontal direction to translate, and the pushing block 30447 fixedly connected to the top end of the sliding table translates together, so as to push the two traction rods 30446 to open outwards, and as the traction rods 30446 are movably sleeved with the connecting strips 30445, the two support assemblies 302 can be driven to open outwards as shown in fig. 3, so that the gap is enlarged, and the goods can be lifted without obstruction. After lifting the cargo, the piston rods of the cylinders 3032 extend to cause the two support platforms 3022 to rotate upward to the horizontal support state shown in fig. 2 to support the cargo, and meanwhile, the sliding table 3041 lacks the pushing from the support platforms 3022 and can translate and reset under the action of the elastic pushing force of the first reset spring 3043 and the second reset spring 3049, the pushing block 30447 resets together, and then the two support assemblies 302 are pushed to be closed again through the jacking columns 30450.

In summary, in this embodiment, the bearing and stabilizing mechanism 300 is installed at the head of the crane and moves along with the crane, when the crane lifts a heavy object, the heavy object can be supported from below by the bearing and stabilizing mechanism 300, so that the whole crane cannot be unbalanced due to lifting of the heavy object, and then the crane can continue to move, and the problem that the conventional mobile crane needs to stop in situ when lifting the heavy object in order to ensure the stability of the crane body is solved; by designing the holding table 3022 for holding the weight to be vertically rotatable as well as horizontally rotatable to be opened, a sufficient lifting space can be provided for the cargo.

The above-described embodiments are merely a few alternative embodiments of the present invention, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present invention and the related teachings of the above-described embodiments.

Claims

1. A mobile crane comprising a mobile machine body (100) and a boom (200) mounted on the mobile machine body (100), characterized in that it further comprises:

The bearing stabilizing mechanism (300) is used for supporting a weight lifted by the suspension arm (200) in the moving process of the mobile machine body (100) so as to ensure the balance of the mobile machine body;

Wherein the support stabilization mechanism (300) comprises a mobile base (301) and a support assembly (302) mounted on the upper portion of the mobile base (301), the support assembly (302) comprising a support table frame (3021) in supporting relation to the mobile base (301) and a support table (3022) vertically rotatably connected to the support table frame (3021) for facilitating lifting of a weight;

The bearing stabilizing mechanism (300) comprises a vertical rotating mechanism (303) for driving the bearing table (3022) to vertically rotate;

The bearing assemblies (302) are provided with a pair of bearing assemblies (302) and horizontally rotate along a vertical axis, the bearing stabilizing mechanism (300) comprises a horizontal opening and closing mechanism (304) which drives the two bearing assemblies (302) to reversely and horizontally rotate so as to further enlarge a lifting space, the horizontal opening and closing mechanism (304) comprises a sliding table (3041) which provides rotary power through translation, and the translation of the sliding table (3041) is driven by the vertical rotation of the bearing table (3022).

2. A mobile crane according to claim 1, characterized in that the vertical rotation mechanism (303) comprises a cylinder mount (3031) fixedly connected to the support table frame (3021), a cylinder (3032) with an end rotatably connected to the cylinder mount (3031), and a connecting rod (3033) fixedly connected to the support table (3022) and movably sleeved to the end of a piston rod of the cylinder (3032).

3. The mobile crane as claimed in claim 2, wherein the horizontal opening and closing mechanism (304) comprises a guide rod (3042) fixedly connected with the movable base (301) and movably penetrating through the sliding table (3041), and a first reset spring (3043) movably sleeved with one end of the guide rod (3042) and used for pushing the sliding table (3041) to move and reset by elastic force.

4. A mobile crane according to claim 3, wherein the horizontal opening and closing mechanism (304) further comprises a driven opening and closing component (3044) for realizing the rotary opening and closing of the bearing component (302) by the translation of the sliding table (3041), the driven opening and closing component (3044) comprises a support column (30441) fixedly connected with the moving base (301), a first rotating shaft bar (3042) fixed at the top end of the support column (30441), a reinforcing rod (3043) with one end fixedly connected with the first rotating shaft bar (3042) and a second rotating shaft bar (30444) with the other end fixedly connected with the reinforcing rod (3043), and the second rotating shaft bar (30444) is rotatably connected with the bearing table frame (3021).

5. The mobile crane as claimed in claim 4, wherein the driven opening and closing assembly (3044) further comprises a connecting bar (30445) fixedly connected with the supporting table frame (3021), a traction rod (30446) with one end movably sleeved with the connecting bar (30445) and the other end rotatably connected with the first rotating shaft (3042), and a pushing block (30447) fixed at the top of the sliding table (3041) and used for translationally pushing the two traction rods (30446) to rotate and open, and the traction rod (30446) drives the supporting assembly (302) to rotate and open.

6. The mobile crane as claimed in claim 5, wherein the driven opening and closing assembly (3044) further comprises a guide post (30448) fixedly connected with the first rotating shaft bar (3042) and the second rotating shaft bar (30444) at two ends respectively and penetrating through the pushing block (30447) in a movable manner, and a second reset spring (3049) movably sleeved with one end of the guide post (30448) and used for pushing the pushing block (30447) to move in a translational manner and reset.

7. The mobile lift of claim 6 wherein the driven opening and closing assembly (3044) further comprises a jack post (30450) fixedly connected to the push block (30447) for pushing the support assembly (302) to rotate closed upon translational repositioning of the push block (30447).

8. The mobile crane as claimed in claim 7, wherein the bottom of the supporting table frame (3021) is fixedly connected with a supporting slide bar (30211), and a chute (3011) for sliding the bottom end of the supporting slide bar (30211) in an arc path is formed on the upper surface of the moving base (301).

9. The mobile crane as claimed in claim 8, wherein a traveling wheel (3012) for allowing the bearing stabilizer (300) to move along with the mobile body (100) is connected to the bottom of the mobile base (301).

10. The mobile crane as claimed in claim 9, wherein the bearing stabilizer mechanism (300) comprises a connection base (305) having one end fixedly connected to the mobile base (301) and the other end fixedly connected to the mobile body (100).