阅读说明：本技术 一种汽车起重机及其使用方法 (Automobile crane and using method thereof ) 是由 刘冠麟 于 2021-03-22 设计创作，主要内容包括：本发明涉及一种汽车起重机及其使用方法,针对本发明汽车起重机来说,包括转台,转台包括第一本体,第一本体上安装起重臂,第一本体可转动地安装在底盘上；第二本体,第二本体上安装配重,第二本体安装在第一本体上,可与第一本体发生水平相对滑动；推轴、驱动装置,驱动推轴水平伸缩,带动第二本体水平移动；支座,通过支座连接起重臂与第一本体；起重臂上有：连接部,与配重滑动连接；滑块,配重上有：水平的滑槽,与滑块适配。针对本发明使用方法来说,驱动装置驱动推轴水平伸缩,带动第二本体水平移动；第二本体带动配重水平移动,使连接部,与配重整体重心平移。本发明能够调整自身重心位置,有利于提升稳定性。(The invention relates to a truck crane and a using method thereof, aiming at the truck crane, the truck crane comprises a rotary table, wherein the rotary table comprises a first body, a cargo boom is arranged on the first body, and the first body is rotatably arranged on a chassis; the second body is provided with a balance weight, and the second body is arranged on the first body and can horizontally slide relative to the first body; the pushing shaft and the driving device drive the pushing shaft to horizontally stretch and retract so as to drive the second body to horizontally move; the support is connected with the cargo boom and the first body through the support; the cargo boom is provided with: the connecting part is connected with the balance weight in a sliding way; the slider has on the counter weight: the horizontal spout, with slider adaptation. Aiming at the using method of the invention, the driving device drives the push shaft to horizontally stretch and retract so as to drive the second body to horizontally move; the second body drives the balance weight to move horizontally, so that the connecting part and the balance weight are integrally moved horizontally. The invention can adjust the gravity center position of the device and is beneficial to improving the stability.)

1. The utility model provides a mobile crane, includes hoist body (1), installs chassis (2) and revolving stage (3) on hoist body (1), install jib loading boom (4) and counter weight (5) on revolving stage (3), its characterized in that, revolving stage (3) include:

a first body (31), wherein the cargo boom (4) is arranged on the first body (31), and the first body (31) is horizontally and rotatably arranged on a chassis (2);

the second body (32), the counterweight (5) is arranged on the second body (32), and the second body (32) is arranged on the first body (31) and can slide relative to the first body (31) horizontally;

a push shaft (33) fixedly connected to the second body (32);

the driving device (34) is arranged in the first body (31) and drives the push shaft (33) to horizontally stretch and retract so as to drive the second body (32) to horizontally move;

a support (35) connecting the boom (4) and the first body (31) by the support;

the cargo boom (4) is provided with:

a connecting portion (41) slidably connected to the counterweight (5);

a slider (42) mounted on the connecting portion (41) and slidably connected to the counterweight (5);

the counterweight (5) is provided with:

and the horizontal sliding groove (51) is matched with the sliding block (42) and can slide relative to the sliding block (42).

2. The mobile crane of claim 1, wherein:

the bottom of the first body (31) is provided with a slide way (36) for the second body (32) to horizontally slide; an oil groove (361) is formed in the slide way (36), and a rolling shaft (362) is installed in the oil groove (361).

3. The mobile crane of claim 2, wherein:

the second body (32) comprises:

an oil chamber (321) in which lubricating oil (322) is placed;

an oil passage (323); extends downwards from the oil cavity (321) and is communicated with the oil groove (361);

the first body (31) is provided with a piston (311) which extends into the oil chamber (321).

4. The mobile crane of claim 3, wherein:

an oil nozzle (324) capable of sliding up and down is arranged in the oil path (323), the oil nozzle (324) is conical, the conical oil nozzle (324) can extend into the oil groove (361) and touch the bottom wall of the oil groove (361), a spring (325) is arranged at the upper end of the conical oil nozzle (324), the spring (325) is positioned in the oil path (323), and a circle of limiting ring (326) is arranged in the oil path (323) and fixedly connected with the upper end of the spring (325).

5. The mobile crane of claim 4, wherein: the mouth of the nipple (324) has an aperture or slot extending along the surface of the mouth.

6. The mobile crane of claim 3, wherein: the piston (311) comprises:

oil rings (3111) distributed circumferentially along the head of the piston (311);

the oil storage grooves (3112) are distributed along the circumferential direction of the oil ring (3111);

the ring groove (3113) is distributed along the circumferential direction of the head of the piston (311) and is matched with the oil ring (3111);

an oil return passage (3114); the oil storage groove (3112) is communicated with the bottom wall of the ring groove (3113);

an oil flow passage (3115); communicating the bottom wall of the ring groove (3113) with the bottom wall of the head of the piston (311);

in the oil chamber (321), there is a hole expanding portion (3211) that communicates an oil flow passage (3115) in a bottom wall of a head portion of the piston (311) with the oil passage (323).

7. The mobile crane of claim 6, wherein: the enlarged hole portion (3211) has an inclined slope to enlarge the interior of the oil chamber (321).

8. The mobile crane of claim 6, wherein: the top of the reaming part (3211) is provided with an oil baffle (3212) which inclines downwards.

9. The mobile crane of claim 8, wherein: the section of the oil baffle plate (3212) is a parallelogram.

10. The use method of the automobile crane as claimed in claim 1, which comprises the following steps:

the driving device (34) drives the push shaft (33) to horizontally stretch and retract so as to drive the second body (32) to horizontally move; the second body (32) drives the balance weight (5) to move horizontally, so that the connecting part (41) and the balance weight (5) move horizontally in the integral gravity center.

Technical Field

The invention relates to the field of cranes, in particular to an automobile crane and a using method thereof.

Background

The invention patent with publication number CN103964319A, publication number 20140422, discloses a truck crane, which comprises a chassis; the front axle, the rear axle, the rotary table and the engine are connected with the chassis; a crane boom and a counterweight are arranged on the rotary table, the front axle is a drive axle, and the rear axle is a steering axle; the rotary table is arranged close to the front axle, and the engine is arranged close to the rear axle; when the automobile crane is in a loaded running state, the crane arm is obliquely arranged towards the front of the chassis, so that the hoisted objects are positioned in front of a cab of the automobile crane. When the hoisted article is positioned in front of the automobile crane, the integral gravity center of the automobile crane and the hoisted article can shift forwards, which is not beneficial to the stability of the automobile crane.

Disclosure of Invention

The invention aims to provide an automobile crane, which can adjust the gravity center position of the automobile crane and is beneficial to improving the stability.

Another object of the present invention is to provide a method of using the mobile crane, which enables the center of gravity to be adjusted.

Aiming at the automobile crane, the invention comprises a crane body, a chassis and a rotary table which are arranged on the crane body, wherein a cargo boom and a counterweight are arranged on the rotary table, and the rotary table comprises:

the crane comprises a first body, a second body and a lifting arm, wherein the first body is provided with the lifting arm and can be horizontally and rotatably arranged on a chassis;

the second body is provided with a balance weight, and the second body is arranged on the first body and can horizontally slide relative to the first body;

the push shaft is fixedly connected with the second body;

the driving device is arranged in the first body, drives the push shaft to horizontally stretch and retract, and drives the second body to horizontally move;

the support is connected with the cargo boom and the first body through the support;

the cargo boom is provided with:

the connecting part is connected with the balance weight in a sliding way;

the sliding block is arranged on the connecting part and is connected with the balance weight in a sliding way;

the counterweight is provided with:

the horizontal sliding groove is matched with the sliding block and can slide relative to the sliding block.

The second body and the first body horizontally slide relative to each other, so that the counterweight on the second body can translate, the gravity center of the counterweight part can translate in the direction far away from the crane boom, the distance required by a balance couple, namely the moment arm, can be adjusted, the counterweight does not increase the weight, and the couple for keeping balance can be increased;

the pushing shaft is controlled by the driving device, and the second body is pushed to slide on the first body by horizontal movement. The sliding groove on the counterweight can slide relative to the sliding block on the connecting part;

as a further improvement of the automobile crane, the bottom of the first body is provided with a slide way for the second body to horizontally slide; an oil groove is arranged on the slideway, and a rolling shaft is arranged in the oil groove.

The second body can slide on the slide, can flow into lubricating oil in the oil groove, and the roller bearing changes sliding friction into rolling friction, further reduces frictional force, and the lubricating oil is convenient for the roller bearing to rotate.

As a further improvement of the mobile crane of the present invention, the second body comprises:

an oil chamber in which lubricating oil is placed;

an oil path; the oil cavity extends downwards and is communicated with the oil groove;

the first body has a piston extending into the oil chamber.

The piston can do piston motion along with the translation of the second body, and lubricating oil in the oil cavity is pushed into the oil way or is sucked from the oil way, so that the flowing of the lubricating oil is promoted, and the lubricating effect is improved.

As a further improvement of the automobile crane, the oil circuit is provided with an oil nozzle capable of sliding up and down, the oil nozzle is conical, the conical oil nozzle can extend into the oil groove and touch the bottom wall of the oil groove, the upper end of the conical oil nozzle is provided with a spring, the spring is positioned in the oil circuit, and a circle of limiting ring is arranged in the oil circuit and fixedly connected with the upper end of the spring.

The oil nozzle is conical, and in the translation process, after the oil nozzle touches the roller, the resistance provided by the roller can decompose an upward component force, so that the oil nozzle retracts into an oil way.

As a further improvement of the mobile crane according to the invention, the mouth of the nozzle has a hole or slot extending along the surface of the mouth.

When the nozzle tip bottoms out, the lubricating oil can enter or be sprayed out from the hole or the seam on the nozzle tip.

As a further improvement of the truck crane, the piston comprises:

the oil rings are distributed along the circumferential direction of the piston head;

the oil ring prevents the lubricating oil from leaking;

the oil storage grooves are distributed along the circumferential direction of the oil ring;

the oil storage groove can be used for storing leaked lubricating oil and can be used for lubricating the oil ring.

The ring grooves are distributed along the circumferential direction of the piston head and are matched with the oil ring;

the ring groove is used for installing an oil ring;

an oil return passage; the oil storage groove is communicated to the bottom wall of the ring groove;

a flow oil passage; communicating the bottom wall of the ring groove to the bottom wall of the piston head;

in the oil chamber, a counterbore portion connects the oil flow passage in the bottom wall of the piston head portion with the oil passage.

The oil return passage guides leaked lubricating oil into the bottom wall of the ring groove from the oil storage groove, the lubricating oil flows into the oil flow passage from the bottom wall of the ring groove and then flows into the oil cavity through the bottom wall of the head of the piston to form backflow of the lubricating oil, the hole expanding portion enables an outlet of the backflow of the lubricating oil to be large, and the backflow is more convenient.

As a further improvement of the automobile crane, the reaming part is provided with an inclined slope to enlarge the interior of the oil cavity.

The inclined ramp facilitates guiding the lubricating oil to the oil circuit.

As a further improvement of the automobile crane, the top of the reaming part is provided with an oil baffle plate which is inclined downwards.

The oil blocking plate is beneficial to preventing lubricating oil from flowing back to the oil flowing channel along the reaming part.

As a further improvement of the automobile crane, the section of the oil baffle plate is a parallelogram.

The upper slope of the parallelogram facilitates the downflow of the lubricating oil and the lower slope facilitates the prevention of the backflow of the lubricating oil.

The using method of the automobile crane specifically comprises the following steps:

the driving device drives the push shaft to horizontally stretch and retract so as to drive the second body to horizontally move; the second body drives the balance weight to move horizontally, so that the connecting part and the balance weight are integrally moved horizontally.

After the overall gravity center is translated, more force couples for balancing can be provided.

The invention can adjust the gravity center position of the device and is beneficial to improving the stability.

Drawings

Fig. 1 is a schematic view of the overall structure.

Fig. 2 is a schematic view of a connection relationship between the first body and the second body.

Reference numerals: 1. a crane body; 2. a chassis; 3. a turntable; 31. a first body; 311. a piston; 3111. an oil ring; 3112. an oil storage groove; 3113. a ring groove; 3114. an oil return passage; 3115. a flow oil passage; 32. a second body; 321. an oil chamber; 3211. a reaming section; 3212. an oil baffle plate; 322. lubricating oil; 323. an oil path; 324. a nozzle tip; 325. a spring; 326. a limiting ring; 33. pushing the shaft; 34. a drive device; 35. a support; 36. a slideway; 361. an oil sump; 362. a roller; 4. a cargo boom; 41. a connecting portion; 42. a slider; 5. balancing weight; 51. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The invention fig. 1-2 disclose a truck crane, including the crane body 1, chassis 2 and revolving stage 3 installed on crane body 1, install crane boom 4 and counter weight 5 on the revolving stage 3, the revolving stage 3 includes:

a first body 31, wherein the boom 4 is arranged on the first body 31, and the first body 31 is horizontally and rotatably arranged on the chassis 2;

a second body 32, wherein the second body 32 is provided with a counterweight 5, and the second body 32 is arranged on the first body 31 and can slide horizontally relative to the first body 31;

a push shaft 33 fixedly connected with the second body 32;

the driving device 34 is installed in the first body 31, drives the pushing shaft 33 to horizontally stretch and retract, and drives the second body 32 to horizontally move, and the driving device 34 can adopt an electric pushing rod and the like;

a support 35 connecting the boom 4 and the first body 31 via the support;

the cargo boom 4 is provided with:

a connecting portion 41 slidably connected to the counterweight 5;

a slider 42 mounted on the connecting portion 41 and slidably connected to the counterweight 5;

the counterweight 5 is provided with:

the horizontal sliding groove 51 is adapted to the sliding block 42 and can slide relative to the sliding block 42.

The second body 32 and the first body 31 horizontally slide relative to each other, so that the counterweight 5 on the second body 32 can translate, the gravity center of the counterweight part can translate towards the direction far away from the crane arm 4, the distance required by the balance couple, namely the moment arm, can be adjusted, the counterweight 5 does not increase the weight, and the couple for keeping balance can be increased, when a larger weight is hung on the crane arm 4, the couple of the crane arm 4 is increased too much, which easily causes the overturn of the automobile crane, the counterweight 5 is translated, the gravity center of the counterweight part is adjusted, the stability of balance is improved, and the couple increased by more weights can be borne;

the pushing shaft 33 is controlled by the driving device 34, and the horizontal movement pushes the second body 32 to slide on the first body 31. The sliding groove 51 on the counterweight 5 can slide relative to the sliding block 42 on the connecting part 41;

in this embodiment, the bottom of the first body 31 has a slide 36 for the second body 32 to slide horizontally; the slideway 36 is provided with an oil groove 361, and a roller 362 is arranged in the oil groove 361.

The second body 32 can slide on the slideway 36, the oil groove 361 can be filled with lubricating oil, the rolling shaft 362 changes the sliding friction into rolling friction, the friction force is further reduced, and the lubricating oil is convenient for the rolling shaft 362 to rotate.

In the present embodiment, the second body 32 includes:

an oil chamber 321 in which lubricating oil 322 is placed;

an oil passage 323; extends downwards from the oil chamber 321 and is communicated with the oil groove 361;

the first body 31 has a piston 311 extending into an oil chamber 321.

The piston 311 can perform piston movement along with the translation of the second body 32, and the lubricating oil in the oil cavity 321 is pushed into the oil channel 323, or the lubricating oil 322 is sucked from the oil channel 323.

In the present embodiment, an oil nipple 324 capable of sliding up and down is disposed in the oil path 323, the oil nipple 324 is tapered, the tapered oil nipple 324 can extend into the oil groove 361 and contact with the bottom wall of the oil groove 361, a spring 325 is disposed at the upper end of the tapered oil nipple 324, the spring 325 is disposed in the oil path 323, and a ring of retainer ring 326 is disposed in the oil path 323 and fixedly connected to the upper end of the spring 325.

The nozzle 324 is tapered such that during translation, when it encounters the roller 362, the resistance provided by the roller 362 dissipates an upward component of force, causing the nozzle 324 to retract into the oil path 323.

In this embodiment, the mouth of the nozzle 324 has an aperture or slot extending along the surface of the mouth.

When the nozzle 324 bottoms out, grease may enter or be ejected from the holes or slots in the nozzle 324.

In the present embodiment, the piston 311 includes:

oil rings 3111 circumferentially distributed along the head of piston 311;

the oil ring 3111 prevents leakage of lubricating oil;

oil storage grooves 3112 circumferentially distributed along the oil ring 3111;

the oil storage groove 3112 may be used to store leaked lubricant oil, which may be used to lubricate the oil ring.

A ring groove 3113 circumferentially distributed along the head of the piston 311 and fitted to the oil ring 3111;

the ring groove 3113 is for mounting the oil ring 3111

An oil return passage 3114; the oil storage groove 3112 is communicated with the bottom wall of the annular groove 3113;

an oil flow passage 3115; the bottom wall of the ring groove 3113 is communicated with the bottom wall of the head part of the piston 311;

in the oil chamber 321, there is a counterbore portion 3211 that communicates the oil flow passage 3115 in the bottom wall of the head portion of the piston 311 with the oil passage 323.

The oil return passage 3114 guides the leaked lubricant oil from the oil storage groove 3112 to the bottom wall of the ring groove 3113, the lubricant oil flows into the oil flow passage 3115 from the bottom wall of the ring groove 3113 and then flows into the oil chamber 321 through the bottom wall of the head of the piston 311, so that the lubricant oil flows back, and the hole expanding portion 3211 enlarges the outlet of the lubricant oil flowing back, so that the lubricant oil flows back more conveniently.

In the present embodiment, the counterbore 3211 has an inclined slope to enlarge the interior of the oil chamber 321.

The inclined ramp facilitates guiding the lubricating oil to the oil path 323.

In this embodiment, the top of the enlarged hole portion 3211 has an oil baffle 3212 inclined downward.

The oil dam 3212 advantageously prevents oil from flowing back along the counterbore into the oil flow passage 3115.

In this embodiment, the oil deflector 3212 has a parallelogram-shaped cross-section.

The upper slope of the parallelogram facilitates the downflow of the lubricating oil and the lower slope facilitates the prevention of the backflow of the lubricating oil.

Example 2

The invention also discloses a using method of the automobile crane, which specifically comprises the following steps:

the driving device 34 drives the pushing shaft 33 to horizontally extend and retract, so as to drive the second body 32 to horizontally move; the second body 32 drives the balance weight 5 to move horizontally, so that the connecting part 41 and the balance weight 5 move horizontally.

After the overall gravity center is translated, more force couples for balancing can be provided.

The invention can adjust the gravity center position of the device and is beneficial to improving the stability.

Example 3

The lubricating oil of the invention can adopt the following mixture ratio: 76.1-85.4% of vegetable oil, 4.4-6.7% of dibutyl hydroxy toluene, 3.4-6.2% of polytetrafluoroethylene, 0.8-1.7% of acrylate and ether copolymer, 1.7-3.3% of alkylolamide, 1.4-2.7% of phytic acid, 0.15-0.25% of n-butyl alcohol and 0.35-0.55% of ethylene glycol.

The multifunctional lubricating oil has the effects of oxidation resistance, low friction coefficient, no foam, passivation prevention, rust prevention, corrosion resistance and low freezing point, and no harmful substances are generated by adopting vegetable oil as a base material.

The invention can adjust the gravity center position of the device and is beneficial to improving the stability.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.