阅读说明：本技术 一种建筑工程用吊机吊臂结构 (Crane boom structure for constructional engineering ) 是由 孙洪春 于 2021-01-04 设计创作，主要内容包括：本发明公开了一种建筑工程用吊机吊臂结构,包括方形状的内筒臂和外筒臂,还包括压臂和导向翘板。本发明中,内筒臂的外表壁和外筒臂的内表壁之间形成一个空隙,在内筒臂内设置一个压臂,压臂的一端和内筒臂的内壁转动连接,另一端设置一个间隙贯穿内筒臂并伸直外部限位轴,在内筒臂的一侧还转动设置一个导向翘板,压臂上下摆动会驱动导向翘板的上下两端轮流向外运动,导向翘板的两端设置滚轮,在外筒臂内的一侧设置沿长度方向分布的挡条,挡条用于对限位轴限位,在挡条的作用下压臂会持续朝一个方向倾斜摆动,此时内筒臂和外筒臂滚动或者近似滚动配合,实现低阻尼伸缩。(The invention discloses a crane boom structure for constructional engineering, which comprises a square inner cylinder arm, a square outer cylinder arm, a press arm and a guide wane. According to the invention, a gap is formed between the outer surface wall of the inner cylinder arm and the inner surface wall of the outer cylinder arm, a pressure arm is arranged in the inner cylinder arm, one end of the pressure arm is rotatably connected with the inner wall of the inner cylinder arm, the other end of the pressure arm is provided with a gap which penetrates through the inner cylinder arm and straightens the external limiting shaft, one side of the inner cylinder arm is also rotatably provided with a guide rocker, the upper end and the lower end of the guide rocker are driven by the upward and downward swinging of the pressure arm to move outwards in turn, rollers are arranged at the two ends of the guide rocker, a blocking strip distributed along the length direction is arranged at one side in the outer cylinder arm and used for limiting the limiting shaft, the pressure arm can continuously swing obliquely towards one direction under the action of the blocking strip, and at the moment, the inner cylinder arm and the outer cylinder arm are in.)

1. A crane boom structure for construction engineering comprises a square inner cylinder arm (1) and a square outer cylinder arm (2), and is characterized by further comprising a pressing arm (3) and a guide rocker (4), wherein a gap (6) is formed between the inner cylinder arm (1) and the outer cylinder arm (2), one side of the inner cylinder arm (1) is provided with a positioning hole (11), an arc-shaped guide hole (12) taking the hole center of the positioning hole (11) as an arc center and a waist-shaped rocker hole (13) positioned between the positioning hole (11) and the arc-shaped guide hole (12), the positioning hole (11), the arc-shaped guide hole (12) and the waist-shaped rocker hole (13) are all opposite to the gap (6), the positioning hole (11) is close to one corner on the inner cylinder arm (1), the arc-shaped guide hole (12) is close to the other corner on the inner cylinder arm (1), and the connecting line at two ends of the arc-shaped guide hole (12) and the length direction of the inner cylinder arm (1) are distributed in parallel, the length direction of waist type perk hole (13) is the same with the length direction of interior cylinder arm (1), locating hole (11) hole center passes the center of waist type perk hole (13) to the line at arc guiding hole (12) middle part, gyration hole (41) have been seted up at the middle part of direction perk (4), both sides wall fixed in waist type perk hole (13) is provided with and gyration hole (41) normal running fit's location axle (131), the both ends of direction perk (4) are rotated and are connected with guide roller (5), press arm (3) to be located interior cylinder arm (1), one side of this press arm (3) just is close to both ends and is provided with connecting axle (31) and spacing axle (32) respectively perpendicularly, the one end and the gyration hole (41) normal running fit of connecting axle (31), the one end clearance of spacing axle (32) passes arc guiding hole (12) and extends to the outside, circular-arc sunken (42) have been seted up to one side that lies in interior bobbin arm (1) on direction wane (4), sunken (42) and one side cooperation of pressing arm (3), fixed blend stop (21) that is provided with in outer bobbin arm (2) and one side that space (6) are relative, this blend stop (21) are close to a turning in outer bobbin arm (2) and along its length direction equidistant distribution, and the length direction of the outer bobbin arm (2) of length direction of this blend stop (21) is perpendicular, adjacent two clearance and spacing axle (32) cooperation between blend stop (21), the cover is equipped with on connecting axle (31) and rotates the connection with locating hole (11) elasticity.

2. The crane boom structure for the constructional engineering as claimed in claim 1, wherein four edges of the outer portion of the inner cylinder arm (1) are fixedly provided with limiting resistance-increasing cylinders (14), and four surfaces of the inner cylinder arm (1) are provided with positioning holes (11), arc-shaped guide holes (12) and waist-shaped warped plate holes (13).

3. The crane boom structure for the constructional engineering as claimed in claim 1, wherein the guiding rocker (4) is provided with a groove-shaped notch (43) at both ends thereof, two side walls in the groove-shaped notch (43) are fixedly provided with an axle (431) which is rotatably matched with the roller (5), and the recess (42) is communicated with the groove-shaped notch (43).

4. The crane boom structure for the construction engineering as claimed in claim 1, wherein the limit shaft (32) is rotatably connected with the pressure arm (3), a wear-resistant rubber sleeve (321) is sleeved on the limit shaft, and a rubber ring (51) is bonded on the periphery of the guide roller (5).

5. A crane boom structure for construction engineering according to claim 4, characterized in that the middle of the press arm (3) is provided with a ball I (33), the ball I (33) being in contact with the intrados of the recess (42).

6. The crane boom structure for the construction engineering as claimed in claim 4, wherein a limiting annular plate (322) located in the gap (6) is fixedly sleeved outside the limiting shaft (32), and a second ball (3221) is arranged on one side of the limiting annular plate (322) close to the inner cylinder arm (1).

Technical Field

The invention relates to the technical field of cranes for buildings, in particular to a crane boom structure for constructional engineering.

Background

The boom on the walking engineering machinery is usually telescopic, specifically, it is formed by multiple sections of boom pipes with different apertures, its telescopic principle is to set up an oil cylinder in the central position of the boom, the single boom pipe of telescopic control of the oil cylinder stretches out, set up the locking structure between the multiple sections of boom pipes, all stretching out of the whole boom, need the oil cylinder to reciprocate many times to form and can realize, and for the surface contact cooperation between boom pipe and the boom pipe, and then can increase the telescopic resistance, accelerate the boom wear, and then the security is poor, and the telescopic friction is big, can also increase the load of the oil cylinder, increase the energy consumption.

Therefore, the invention provides a crane boom structure for construction engineering.

Disclosure of Invention

The invention aims to: in order to solve the problems mentioned in the background art, a crane boom structure for construction engineering is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a crane boom structure for constructional engineering comprises a square inner cylinder arm, a square outer cylinder arm, a pressure arm and a guide warping plate, a gap is arranged between the inner cylinder arm and the outer cylinder arm, one side of the inner cylinder arm is provided with a positioning hole, an arc-shaped guide hole taking a positioning hole center as an arc center and a waist-shaped warping plate hole positioned between the positioning hole and the arc-shaped guide hole, the positioning hole, the arc-shaped guide hole and the waist-shaped warping plate hole are opposite to each other in the gap, the positioning hole is close to one corner on the inner cylinder arm, the arc-shaped guide hole is close to the other corner on the inner cylinder arm, a line at two ends of the arc-shaped guide hole and the length direction of the inner cylinder arm are distributed in parallel, the length direction of the waist-shaped warping plate hole is the same as that of the inner cylinder arm, the line from the positioning hole center to the middle of the arc-shaped guide hole penetrates through the center of the waist, two side walls in the waist-shaped wane hole are fixedly provided with positioning shafts which are rotationally matched with the rotary hole, two ends of the guide wane are rotationally connected with guide rollers, the pressure arm is positioned in the inner cylinder arm, a connecting shaft and a limiting shaft are respectively vertically arranged at one side of the pressure arm and close to the two ends of the pressure arm, one end of the connecting shaft is in rotating fit with the rotary hole, one end gap of the limiting shaft penetrates through the arc-shaped guide hole and extends to the outside, one side of the guide rocker plate, which is positioned in the inner cylinder arm, is provided with an arc-shaped recess, the recess is matched with one side of the pressure arm, a barrier strip is fixedly arranged on one side of the outer cylinder arm opposite to the gap, the barrier strip is close to one corner in the outer cylinder arm and distributed at equal intervals along the length direction of the barrier strip, the length direction of the barrier strip is perpendicular to the length direction of the outer cylinder arm, the barrier strip is adjacent to the corner, a gap between the barrier strips is matched with a limiting shaft, and the connecting shaft is sleeved with a positioning hole which is connected with the barrier strip in an elastic rotating mode.

As a further description of the above technical solution:

four edges of the outer portion of the inner cylinder arm are fixedly provided with limiting resistance-increasing cylinders, and positioning holes, arc-shaped guide holes and waist-shaped warping plate holes are formed in four faces of the inner cylinder arm.

As a further description of the above technical solution:

the cell type breach has been seted up at the both ends of direction wane, the fixed setting of both sides wall in the cell type breach and gyro wheel normal running fit's shaft, sunken and cell type breach intercommunication.

As a further description of the above technical solution:

the limiting shaft is rotatably connected with the pressure arm, a wear-resistant rubber sleeve is sleeved on the limiting shaft, and a rubber ring is bonded on the periphery of the guide roller.

As a further description of the above technical solution:

the middle part of the pressure arm is provided with a first ball, and the first ball is in contact with the concave inner arc surface.

As a further description of the above technical solution:

the outer portion of the limiting shaft is fixedly sleeved with a limiting annular plate located in the gap, and a second ball is arranged on one side, close to the inner cylinder arm, of the limiting annular plate.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, a gap is formed between the outer surface wall of the inner cylinder arm and the inner surface wall of the outer cylinder arm, a pressure arm is arranged in the inner cylinder arm, one end of the pressure arm is rotatably connected with the inner wall of the inner cylinder arm, the other end of the pressure arm is provided with a gap which penetrates through the inner cylinder arm and straightens the external limiting shaft, one side of the inner cylinder arm is also rotatably provided with a guide rocker, the upper end and the lower end of the guide rocker are driven by the upward and downward swinging of the pressure arm to move outwards in turn, rollers are arranged at the two ends of the guide rocker, a blocking strip distributed along the length direction is arranged at one side in the outer cylinder arm and used for limiting the limiting shaft, the pressure arm can continuously swing obliquely towards one direction under the action of the blocking strip, and at the moment, the inner cylinder arm and the outer cylinder arm are in.

2. According to the invention, the limiting resistance-increasing cylinders are arranged on the four edges of the inner cylinder arm, after the pressure arm is reset, the pressure between the rollers at the two ends of the guide wane and the inner wall of the outer cylinder arm disappears, and at the moment, part of the limiting resistance-increasing cylinders can be in extrusion contact with the inner wall of the outer cylinder arm, so that the damping between the inner cylinder arm and the outer cylinder arm can be increased, and the load of the stay support of the external driving oil cylinder can be greatly reduced.

3. According to the invention, the limiting shaft is rotatably connected with the pressure arm, the wear-resistant rubber sleeve is sleeved on the limiting shaft, the rubber ring is bonded on the periphery of the guide roller, the first ball is arranged in the middle of the pressure arm and is in contact with the concave inner arc surface, the limiting annular plate positioned in the gap is fixedly sleeved outside the limiting shaft, and the second ball is arranged on one side, close to the inner cylinder arm, of the limiting annular plate, so that the swinging flexibility or bending strength of the pressure arm can be improved, and the reliability of resistance reduction, extension or resistance increase stopping is improved.

Drawings

Fig. 1 is a schematic structural diagram of the cooperation of an inner cylinder arm, an outer cylinder arm, a press arm and a guide rocker of a crane boom structure for construction engineering, which is provided by the invention;

fig. 2 is a schematic structural view of the cooperation of the inner cylinder arm, the press arm and the guide rocker of the crane boom structure for construction engineering provided by the invention;

FIG. 3 is a schematic structural view of a boom structure of a crane for construction engineering according to the present invention, with an inner cylinder arm removed, shown in FIG. 2;

fig. 4 is a schematic structural view of the cooperation of the outer cylinder arm, the press arm and the guide rocker of the crane boom structure for construction engineering provided by the invention;

fig. 5 is a schematic structural view of the boom structure of the crane for construction engineering shown in fig. 3 without the guide rocker.

Illustration of the drawings:

1. an inner cylinder arm; 11. positioning holes; 12. an arc-shaped guide hole; 13. waist-shaped warped plate holes; 131. positioning the shaft; 14. a limiting resistance-increasing cylinder; 2. an outer cylinder arm; 21. blocking strips; 3. pressing the arm; 31. a connecting shaft; 32. a limiting shaft; 321. wear-resistant rubber sleeves; 322. a limiting annular plate; 3221. a second ball bearing; 33. a first ball; 4. a guide rocker; 41. rotating the hole; 42. recessing; 43. a groove-shaped notch; 431. a wheel axle; 5. a roller; 51. a rubber ring; 6. a void.

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.

Example 1

Referring to fig. 1-4, a crane boom structure for construction engineering comprises a square inner cylinder arm 1 and an outer cylinder arm 2, a pressure arm 3 and a guide rocker 4, wherein a gap 6 is arranged between the inner cylinder arm 1 and the outer cylinder arm 2, specifically, a limiting resistance-increasing cylinder 14 is fixedly arranged on four edges of the outer part of the inner cylinder arm 1, so as to form four gaps 6, the limiting resistance-increasing cylinder 14 and four included angles in the outer cylinder arm 2 can form damping fit, the outer part of the limiting resistance-increasing cylinder 14 can be made into an anti-slip thread structure, and when the limiting resistance-increasing cylinder 14 and the outer cylinder arm 2 are in extrusion contact, the friction force between the limiting resistance-increasing cylinder 14 and the outer cylinder arm 2 is increased; one side of the inner cylinder arm 1 is provided with a positioning hole 11, an arc-shaped guide hole 12 taking the hole center of the positioning hole 11 as an arc center and a waist-shaped warped hole 13 positioned between the positioning hole 11 and the arc-shaped guide hole 12, and four surfaces of the inner cylinder arm 1 can be provided with the positioning hole 11, the arc-shaped guide hole 12 and the waist-shaped warped hole 13, the positioning hole 11, the arc-shaped guide hole 12 and the waist-shaped warped hole 13 are opposite to each other, the positioning hole 11 is close to one corner on the inner cylinder arm 1, the arc-shaped guide hole 12 is close to the other corner on the inner cylinder arm 1, the connecting line of two ends of the arc-shaped guide hole 12 is distributed in parallel with the length direction of the inner cylinder arm 1, the length direction of the waist-shaped warped hole 13 is the same as the length direction of the inner cylinder arm 1, the connecting line from the hole center of the positioning hole 11 to the middle part of the arc-shaped guide hole 12 passes through the center of the waist-shaped hole 13, the middle part of the, the two ends of the guiding wane 4 are rotatably connected with guiding rollers 5, specifically, the two ends of the guiding wane 4 are provided with groove-shaped notches 43, two side walls in the groove-shaped notches 43 are fixedly provided with wheel shafts 431 which are rotatably matched with the rollers 5, the recesses 42 are communicated with the groove-shaped notches 43, the pressing arm 3 is positioned in the inner cylinder arm 1, one side of the pressing arm 3 close to the two ends is respectively and vertically provided with a connecting shaft 31 and a limiting shaft 32, one end of the connecting shaft 31 is rotatably matched with the rotary hole 41, one end of the limiting shaft 32 penetrates through the arc-shaped guide hole 12 in a clearance manner and extends to the outside, one side of the guiding wane 4 positioned in the inner cylinder arm 1 is provided with an arc-shaped recess 42, the recess 42 is matched with one side of the pressing arm 3, the pressing arm 3 can slide along the surface wall of the recess 42 when swinging up and down, and further can push the guiding wane 4 to swing by taking the positioning shaft 131 as a rotating shaft, specifically, when the pressing arm 3 swings up, the rollers 5, on the contrary, when the pressure arm 3 swings downwards, the rollers 5 at the bottom of the guide wane 4 move outwards, after the rollers 5 around the inner cylinder arm 1 move outwards simultaneously and abut against the inner wall of the outer cylinder arm 2, the friction force between the four limiting resistance-increasing cylinders 14 and the outer cylinder arm 2 is reduced, at the moment, the stretching is flexible, when the rollers 5 are far away from the outer cylinder arm 2, the friction force between part of the limiting resistance-increasing cylinders 14 and the outer cylinder arm 2 is increased, and at the moment, the load of an oil cylinder for externally controlling the stretching can be greatly reduced; a barrier strip 21 is fixedly arranged on one side of the inner side of the outer cylinder arm 2 opposite to the gap 6, the barrier strip 21 is close to one corner of the inner side of the outer cylinder arm 2 and is distributed at equal intervals along the length direction, the length direction of the barrier strips 21 is vertical to the length direction of the outer cylinder arm 2, the clearance between two adjacent barrier strips 21 is matched with a limit shaft 32, a connecting shaft 31 is sleeved with a positioning hole 11 to be elastically and rotatably connected, a torsion spring can be sleeved on the connecting shaft 31 for resetting the connecting shaft 31, that is, the limiting shaft 32 can drive the pressing arm 3 to swing under the limiting of the barrier strip 21, and after the pressing arm 3 swings to a certain extent along with the relative movement of the inner cylinder arm 1 to the outer cylinder arm 2, the limiting shaft 32 can be separated from the barrier strips 21, and the limiting shaft 32 can fall into one adjacent barrier strip 21 under the action of the torsion spring, so that the resistance between the inner cylinder arm 1 and the outer cylinder arm 2 is small in the process of continuous movement of the inner cylinder arm 1 relative to the outer cylinder arm 2.

Example 2

Referring to fig. 4 and 5, the difference from embodiment 1 is that the limiting shaft 32 is rotatably connected with the pressing arm 3, a wear-resistant rubber sleeve 321 is sleeved on the limiting shaft, a rubber ring 51 is bonded on the periphery of the guide roller 5, a first ball 33 is arranged in the middle of the pressing arm 3, and the first ball 33 is in contact with the inner arc surface of the recess 42, so that the clamping stagnation phenomenon of the surfaces of the pressing arm 3 and the recess 42 can be avoided, and the reliability of the swing resetting of the pressing arm 3 is improved; the fixed cover in outside of spacing axle 32 is equipped with spacing annular plate 322 that is located space 6, and one side that is close to inner cylinder arm 1 on the spacing annular plate 322 is provided with ball two 3221, because extrusion direction wane 4's dynamics is big, can avoid pressing the condition that arm 3 appears warping through setting up spacing annular plate 322, further improves inner cylinder arm 1 and moves or increases the reliability that hinders relatively low damping in relative outer cylinder arm 2.

The working principle is as follows: when the device is used, the pressing arms 3 and the guide warping plates 4 are arranged on the inner cylinder arm 1 at equal intervals along the length direction, when the outer cylinder controls the inner cylinder arm 1 to ascend relative to the outer cylinder arm 2, the pressing arms 3 swing downwards under the limit of one barrier strip 21, the pressing arms 3 move along the depressions 42 on the guide warping plates 4 simultaneously, and further push the rollers 5 at the lower part of the guide warping plates 4 to move outwards, at the moment, the rollers 5 are pressed against the inner surface walls of the inner and outer cylinder arms 2, the rollers 5 on the four surfaces of the inner cylinder arm 1 are pressed against the inner surface walls of the outer cylinder arm 2 simultaneously, the extrusion force between the limit resistance-increasing cylinders 14 and the outer cylinder arm 2 is reduced to zero, at the moment, the whole inner cylinder arm 1 and the outer cylinder arm 2 are in an approximate rolling fit state, along with the continuous ascending of the inner cylinder arm 1, the limit shafts 32 are separated from the barrier strips 21, and the lower limit shafts 32 fall onto the adjacent barrier strips 21 under the action of the torsion spring, and the arm plate can also keep the swing inclined position, so that low damping or undamped extension is realized, otherwise, low damping contraction can be realized, when the pressure arm 3 needs to ascend and stay, the position of one end of the return stroke of the oil cylinder can be controlled, the pressure arm 3 resets, the roller 5 leaves the inner wall of the outer cylinder arm 2, part of the limiting resistance-increasing cylinder 14 can be in extrusion contact with the outer cylinder arm 2, the friction between the limiting resistance-increasing cylinder and the outer cylinder arm is increased, and the supporting load of the oil cylinder can be greatly reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.