CN114684729A

CN114684729A - Wheel crane

Info

Publication number: CN114684729A
Application number: CN202011582804.9A
Authority: CN
Inventors: 张军
Original assignee: Hebei Leisa Heavy Construction Machinery Co ltd
Current assignee: Hebei Leisa Heavy Construction Machinery Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-01

Abstract

The present disclosure relates to a wheeled crane, comprising: a frame including a first frame section, a second frame section, and a mounting mechanism for horizontally rotatably connecting the second frame section to the first frame section; the lifting equipment comprises a rotary table arranged on the second frame section and a suspension arm connected with the rotary table, and one end of the suspension arm far away from the rotary table is supported on the second frame section; and the alarm system comprises a sensor for detecting the relative rotating angle of the first frame section and the second frame section, an alarm device electrically connected with the sensor, and a control device for controlling the on-off of the alarm device, wherein the control device is configured to control the on-off of the alarm device when the angle detected by the sensor is larger than a preset value. The frame of the wheel crane is divided into a first frame section and a second frame section which can be connected in a horizontal rotating mode, and the road passing capacity of the wheel crane is improved. And the interference caused by the overlarge relative rotation angle of the first frame section and the second frame section can be prevented, so that the damage of parts is avoided.

Description

Wheel crane

Technical Field

The disclosure relates to the technical field of engineering machinery, in particular to a wheel crane.

Background

The wheel crane is an engineering machine for loading the hoisting equipment on a special vehicle frame, can run on the road and can transport the hoisting equipment to different operation sites. However, the frame of the wheel crane has a long length, and there is a great difficulty in traveling through narrow roads or in places with complicated road conditions, which results in inconvenient transportation of the equipment therein. Therefore, it is desirable to provide a solution that facilitates transportation of the lifting apparatus.

Disclosure of Invention

The purpose of this disclosure is to provide a wheeled crane to solve inconvenient technical problem of hoisting equipment transportation among the correlation technique.

In order to achieve the above object, the present disclosure provides a wheel crane, comprising:

a frame comprising a first frame section, a second frame section, and a mounting mechanism for horizontally rotatably connecting the second frame section to the first frame section;

a lifting device comprising a turntable mounted on the second frame section and a boom connected to the turntable, an end of the boom remote from the turntable being supported on the second frame section; and

the alarm system comprises a sensor for detecting the relative rotation angle of the first frame section and the second frame section, an alarm device electrically connected with the sensor, and a control device for controlling the on-off of the alarm device, wherein the control device is configured to control the alarm device to be turned on when the angle detected by the sensor is greater than a preset value.

Optionally, the mounting mechanism comprises a mounting plate formed at an end of the first frame section, a slotted plate formed at an end of the second frame section into which the mounting plate can be inserted, and a locking pin vertically penetrating the slotted plate and the mounting plate, the mounting plate and the slotted plate being capable of relative rotation about the locking pin.

Optionally, the mounting mechanism further comprises a gasket disposed between an inner surface of a slot wall of the slotted plate and a surface of the mounting plate proximate the slot wall.

Optionally, the mounting mechanism includes a spherical slot disposed on the first frame section, and a ball disposed on the second frame section, the second frame section riding above the first frame section such that the ball projects downward into the spherical slot.

Optionally, the first frame section is formed with a first connecting seat, the second frame section is formed with a second connecting seat, the spherical groove is formed on the first connecting seat, the ball head is formed on the second connecting seat, a notch of the spherical groove has a diameter larger than that of the ball head, and the mounting mechanism further includes a positioning structure for restraining the ball head in the spherical groove.

Optionally, the positioning structure includes a positioning plate disposed at an outer end side of the notch, the positioning plate is provided with a receiving hole capable of being fitted and coated in a circumferential direction of the ball head, an inner surface profile of the receiving hole matches with an outer surface profile of the ball head, and a diameter of the receiving hole is configured to be gradually reduced in a direction away from the notch.

Optionally, the positioning plate includes two sub-plates detachably connected to the first connecting seat, and ends of the two sub-plates are formed with notches, respectively, so as to form the receiving hole after the two sub-plates are butted.

Optionally, the positioning plate is detachably mounted on the first connecting seat through a fastener, the mounting mechanism further includes a sealing ring disposed between the positioning plate and the first connecting seat, and a mounting hole for the fastener to pass through is formed in the sealing ring.

Optionally, the wheeled crane further comprises a limiting structure disposed between the first frame section and the second frame section to limit the relative rotational angle of the first frame section and the second frame section.

Optionally, the limiting structure comprises a limiting plate mounted on one of the first frame segment and the second frame segment for stopping the other of the first frame segment and the second frame segment, and a surface of the limiting plate in contact with the first frame segment and/or the second frame segment is provided with a buffer block.

Through above-mentioned technical scheme, but the frame with wheeled crane divide into the first frame section and the second frame section of horizontal rotation connection to in narrow road or the complicated operation place transportation hoisting equipment of road conditions, improve wheeled crane's road surface throughput capacity. Furthermore, the lifting device is arranged on the second frame section in a complete manner, so that a reliable support of the boom can be achieved when the vehicle is turning. In addition, by arranging the alarm device, the influence on the driving safety caused by the overlarge turning angle of the frame can be prevented, and the interference caused by the overlarge relative turning angle of the first frame section and the second frame section can also be prevented, so that the damage of parts is caused.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a side elevational schematic view of a vehicle frame provided in accordance with an exemplary embodiment of the present disclosure;

FIG. 2 is an enlarged view of the mounting mechanism of FIG. 1;

FIG. 3 is a schematic view of a mounting mechanism provided by another exemplary embodiment of the present disclosure;

FIG. 4 is a side elevational schematic view of a vehicle frame provided in accordance with another exemplary embodiment of the present disclosure;

FIG. 5 is an exploded view of the mounting mechanism of FIG. 4;

FIG. 6 is an assembly view of the mounting mechanism of FIG. 5;

FIG. 7 is a side cross-sectional view of the mounting mechanism of FIG. 6;

FIG. 8 is a top down schematic view of a vehicle frame provided in accordance with an exemplary embodiment of the present disclosure;

FIG. 9 is an enlarged view of the mounting mechanism of FIG. 8;

fig. 10 is a schematic view of a limiting structure provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

11-a first frame section, 12-a second frame section, 100-a mounting mechanism, 101-a first connecting plate, 102-a second connecting plate, 103-a connecting shaft, 21-a mounting plate, 22-a slotted plate, 23-a locking pin, 231-a stop table, 232-a locking member, 24-a gasket, 25-a bearing bush, 31-a spherical groove, 32-a ball head, 33-a first connecting seat, 34-a second connecting seat, 35-a positioning plate, 351-a dividing plate, 352-a notch, 36-a receiving hole, 37-a sealing ring, 371-a mounting hole, 41-a limiting plate and 42-a cushion pad.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the terms of orientation such as "front, rear, horizontal, vertical, up, and down" are used based on the driving state of the vehicle, and specifically, refer to the drawing directions of fig. 1 and 4, the lower side of the drawing directions of fig. 1 and 4 being the front, the upper side of the drawing being the rear, the direction perpendicular to the drawing being the horizontal direction, the left-right direction of the drawing being the vertical direction, the left side of the drawing being the upper side, and the right side of the drawing being the lower side. The terms "inner" and "outer" refer to the respective component parts as per their contours. Terms such as "first," "second," and the like, used in this disclosure are intended to distinguish one element from another, without order or importance. Further, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements.

In an embodiment of the present disclosure, a wheeled crane is provided, which is shown in fig. 1, 4 and 8, and includes a frame, a lifting device mounted on the frame, and an alarm system. The frame includes a first frame section 11, a second frame section 12, and a mounting mechanism 100 for horizontally rotatably connecting the second frame section 12 to the first frame section 11, wherein the first frame section 11 may be a front frame section connected to the cab of the vehicle, and the second frame section 12 may be a rear frame section far away from the cab of the vehicle. The lifting device (not shown in the figures) comprises a turntable mounted on the second frame section 12 and a boom connected to the turntable, the boom being supported on the second frame section 12 at one end remote from the turntable, in brief, the turntable may be located at the front side of the second frame section 12, the boom may be connected to the turntable at one end, extend backwards and be supported at the rear side of the second frame section 12, or the turntable may be located at the rear side of the second frame section 12, in which case the boom arm may also extend forward from the turntable and be supported at the front side of the second frame section 12, in this case, the suspension arm can extend to the upper part of the cab of the vehicle, so that the suspension arm can extend along the length of the vehicle body without exceeding the length of the original vehicle body, the influence on the road trafficability caused by the overlarge length of the whole vehicle is avoided, it will be appreciated that the boom is supported on the second frame section 12 only, but is not limited to extending beyond the front or rear side of the second frame section 12. Here, a boom support may be provided on the second frame section 12 to support the boom; the suspension arm can be supported by the telescopic oil cylinder for controlling the extension and contraction of the suspension arm, so that an additional suspension arm support can be avoided, the spatial arrangement is reduced, and the interference with other components is avoided. The warning system may include a sensor for detecting a relative rotation angle of the first frame section 11 and the second frame section 12, a warning device electrically connected to the sensor, and a control device for controlling a switch of the warning device, the control device being configured to control the warning device to be turned on when the angle detected by the sensor is greater than a preset value. It should be noted that the alarm system may be integrated in the electric control system of the entire vehicle, or may be separately provided with a controller for control. The sensor may be an angle sensor arranged on the mounting mechanism 100 or a position sensor capable of detecting a relative position between the first frame section 11 and the second frame section 12, or may be a sensor of other forms, the warning device may be an audible warning device or a light warning device, and the like, for example, when a relative rotation angle between the first frame section 11 and the second frame section 12 is too large, a warning sound such as a buzzer or a warning light may flash in a cab to warn a driver, and when the angle meets a requirement, the warning device may be automatically turned off.

Through the technical scheme, the frame of the wheel crane is divided into the first frame section 11 and the second frame section 12 which are connected in a horizontal rotating mode, so that the hoisting equipment can be conveniently transported in a narrow road or an operation field with complex road conditions, and the road surface passing capacity of the wheel crane is improved. Furthermore, the lifting device is arranged entirely on the second frame section 12, so that a reliable support of the boom can be achieved when the vehicle is turning. In addition, by arranging the alarm device, the influence of the overlarge turning angle of the frame on the driving safety can be prevented, and the interference caused by the overlarge relative turning angle of the first frame section 11 and the second frame section 12 can also be prevented, so that the damage of parts is avoided.

In the disclosed embodiment, as shown in fig. 2, the mounting mechanism 100 includes a mounting plate 21 formed at an end of the first frame segment 11, a slot plate 22 formed at an end of the second frame segment 12, into which the mounting plate 21 can be inserted, and a locking pin 23 vertically penetrating the slot plate 22 and the mounting plate 21, wherein the mounting plate 21 and the slot plate 22 can rotate relative to each other around the locking pin 23. One end of the locking pin 23 may be formed with a stopper 231, and the other end may be locked by a locking member 232, and the locking member 232 may be a cotter pin, for example. The groove-shaped plate 22 may be a U-shaped plate having groove walls only on the upper and lower sides, or a semi-closed structure having a peripheral groove wall and only having one opening, and the two groove walls of the peripheral groove wall except the upper and lower groove walls may limit the relative rotation angle between the mounting plate 21 and the groove-shaped plate 22, so as to prevent the vehicle frame from being influenced by the excessive rotation angle. While mounting plate 21 and channel plate 22 may be integrally formed with the vehicle frame, in other embodiments, referring to FIG. 3, mounting mechanism 100 may include two spaced apart first attachment plates 101 attached to first frame section 11, two spaced apart second attachment plates 102 attached to second frame section 12, and a connecting shaft 103 rotatably connecting first attachment plates 101 and second attachment plates 102, wherein first attachment plates 101 and second attachment plates 102 are arranged in an up-and-down cross configuration, and each first attachment plate 101 may be attached to a corresponding one of second attachment plates 102 and extend perpendicularly through all attachment plates via a connecting shaft 103.

In the disclosed embodiment, the mounting mechanism 100 can further include a gasket 24 disposed between an inner surface of a channel wall of channel plate 22 and a surface of mounting plate 21 proximate the channel wall. The gasket 24 can prevent the mounting plate 21 from directly contacting the channel plate 22 to cause abrasion, and prevent damage to parts. In addition, a bush 25, a bearing or the like may be fitted outside the lock pin 23, so that abrasion of the lock pin 23 is prevented, and the service life of the lock pin 23 is prolonged.

According to one embodiment of the present disclosure, referring to FIGS. 4-7, the mounting mechanism 100 can include a spherical recess 31 disposed on the first frame section 11, and a ball head 32 disposed on the second frame section 12, the second frame section 12 riding over the first frame section 11 such that the ball head 32 extends downward into the spherical recess 31. The ball head 32 extends into the spherical groove 31 and is firmly held in the spherical groove 31 by the action of the always downward gravity, and the ball head 32 horizontally rotates in the spherical groove 31, so that the second frame segment 12 is horizontally rotated relative to the first frame segment 11.

Further, referring to fig. 5 to 7, a first connecting seat 33 is formed on the first frame section 11, a second connecting seat 34 is formed on the second frame section 12, a spherical groove 31 is formed on the first connecting seat 33, and a ball head 32 is formed on the second connecting seat 34, after the ball head 32 extends into the spherical groove 31, the second connecting seat 34 can be overlapped above the first connecting seat 33, and the second connecting seat 34 can apply gravity to the ball head 32, which is held in the spherical groove 31, so that the ball head 32 can be reliably and stably mounted. Since the first connecting seat 33 carries the second connecting seat 34 and the ball head 32 at the lower side, the first connecting seat 33 can be welded on the first frame section 11 to improve the installation strength of the first connecting seat 33, and the second connecting seat 34 can be detachably mounted on the second frame section 12 by a fastener to facilitate maintenance and replacement of the ball head 32 worn due to long-term use. The diameter of the opening of the spherical groove 31 of the first connecting seat 33 is set larger than the diameter of the ball head 32 to facilitate the mounting of the ball head 32 into the spherical groove 31, and in order to prevent the ball head 32 from coming out of the spherical groove 31, the mounting mechanism 100 may further include a positioning structure for restraining the ball head 32 in the spherical groove 31. After the ball head 32 extends into the spherical groove 21 with a larger diameter, the ball head 32 is limited up and down through the positioning structure, so that the ball head 32 can only horizontally rotate in the spherical groove 31 and cannot be taken out of the spherical groove 31, and the stability of the vehicle in the running process is ensured.

Specifically, with continued reference to fig. 5 to 7, the positioning structure may include a positioning plate 35 disposed at an outer end side of the notch, and with reference to fig. 7, the positioning plate 35 is opened with a receiving hole 36 capable of being fittingly wrapped around a circumferential direction of the ball head 32, an inner surface profile of the receiving hole 36 matches an outer surface profile of the ball head 32, that is, an inner surface of the receiving hole 36 may be an arc surface, and a diameter of the receiving hole 36 is configured to be tapered in a direction away from the notch. Thus, the diameter of the receiving hole 36 is smallest near the uppermost position, i.e., the receiving hole 36 is located on the upper hemisphere of the ball head 32, so that the ball head 32 can be stopped at the uppermost position of the receiving hole 36, preventing the ball head 32 from being removed from the receiving hole 36. In other embodiments, the positioning structure may also be a fastener that passes through the first connecting seat 33 from the lateral direction and abuts against the lateral direction of the upper hemisphere of the ball head 32, the fastener contacts with the surface of the ball head 32 but does not prevent the rotation of the ball head 32, and the surface of the fastener contacting with the ball head 32 may be an arc surface.

In the embodiment of the present disclosure, referring to fig. 5, the positioning plate 35 may include two sub-plates 351 detachably connected to the first connection seats 33, and notches 352 are formed at ends of the two sub-plates 351, respectively, to form the receiving holes 36 after the two sub-plates 351 are butted. Two minute boards 351 can be two complementary and the same minute boards of size of shape, and after bulb 32 installation, two minute boards 351 can follow the both sides butt joint of bulb 32 on bulb 32's circumference, through the form that sets up minute board 351 for locating plate 35's installation is simple more convenient.

In the embodiment of the present disclosure, the positioning plate 35 may be detachably mounted on the first connecting seat 33 by a fastener, and as shown in fig. 5 to 7, the mounting mechanism 100 may further include a sealing ring 37 disposed between the positioning plate 35 and the first connecting seat 33, and the sealing ring 37 may be provided with a mounting hole 371 for the fastener to pass through. The fastening member for installing the positioning plate 35 passes through the positioning plate 35 and the sealing ring 37 in sequence, and then is fixed on the first connecting seat 33. Wherein, sealing washer 37 can be made by rubber materials, and sealing washer 37 is compressed tightly between locating plate 35 and first connecting seat 33 to this can improve locating plate 35's installation fastening nature, also can prevent through sealed that external moisture or impurity from entering into between spherical groove 31 and the bulb 32, lead to the two to rust and influence the smooth and easy rotation between first frame section 11 and the second frame section 12, influence the life of bulb 32.

Referring to fig. 8 and 9, the wheeled crane provided by the embodiment of the present disclosure may further include a limiting structure disposed between the first frame segment 11 and the second frame segment 12 to limit a relative rotation angle of the first frame segment 11 and the second frame segment 12. In the vehicle driving process, the relative rotation angle of the first frame section 11 and the second frame section 12 is too large, so that the driving safety can be influenced, parts can be interfered and damaged by impact on the other hand, the limiting structure is arranged, the occurrence of the above conditions can be avoided, and the reliability of the wheel crane is improved.

Referring to fig. 9 and 10, the limiting structure may include a limiting plate 41 mounted on one of the first frame section 11 and the second frame section 12 for stopping the other of the first frame section 11 and the second frame section 12, and the limiting plate 41 may be disposed on the channel plate 22 and symmetrically disposed at both sides of the mounting plate 21 as in the embodiment in which the mounting mechanism 100 includes the mounting plate 21 and the channel plate 22 described above. In the embodiment that the mounting mechanism 100 includes the spherical groove 31 and the ball head 32, since the first connecting seat 33 and the second connecting seat 34 are overlapped, there is no interference between the two due to the height difference during the horizontal rotation, in this case, the limiting structure may not be provided, and of course, the limiting plate 41 may be provided on the corresponding frame to avoid the rotation angle being too large, which is not limited in this disclosure. In order to prevent the first frame segment 11 and the second frame segment 12 from being worn due to impact during the rotation of the frame, the surface of the limiting plate 41 contacting with the first frame segment 11 or the second frame segment 12 may be provided with a cushion 42, and the cushion 42 may play a role of buffering and damping, and may also prevent parts from being worn and damaged due to direct contact. Wherein the cushion pad 42 can be detachably mounted to the stopper plate 41 by a fastener to facilitate replacement after damage. The bumper pad 42 may be made of nylon or other materials that reduce the impact effect.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A wheeled crane, comprising:

a frame comprising a first frame section (11), a second frame section (12) and a mounting mechanism (100) for horizontally rotatably connecting the second frame section (12) to the first frame section (11);

a lifting device comprising a turntable mounted on the second frame section (12) and a boom connected to the turntable, the boom being supported on the second frame section (12) at an end remote from the turntable; and

the alarm system comprises a sensor for detecting the relative rotation angle of the first frame section (11) and the second frame section (12), an alarm device electrically connected with the sensor, and a control device for controlling the on-off of the alarm device, wherein the control device is configured to control the on-off of the alarm device when the angle detected by the sensor is larger than a preset value.

2. A wheeled crane according to claim 1, characterised in that the mounting means (100) comprises a mounting plate (21) formed at the end of the first frame section (11), a slotted plate (22) into which the mounting plate (21) can be inserted formed at the end of the second frame section (12), and a locking pin (23) which can extend perpendicularly through the slotted plate (22) and the mounting plate (21), the mounting plate (21) and the slotted plate (22) being able to rotate relative to each other about the locking pin (23).

3. A wheeled crane according to claim 2, characterised in that the mounting mechanism (100) further comprises a washer (24) arranged between the inner surface of the slot wall of the slotted plate (22) and the surface of the mounting plate (21) proximate to the slot wall.

4. A wheeled crane according to claim 1, characterised in that the mounting mechanism (100) comprises a spherical recess (31) provided on the first frame section (11), and a ball head (32) provided on the second frame section (12), the second frame section (12) being draped over the first frame section (11) so that the ball head (32) projects downwardly into the spherical recess (31).

5. A wheeled crane according to claim 4, characterised in that said first frame section (11) is formed with a first attachment seat (33) and said second frame section (12) is formed with a second attachment seat (34), said spherical recess (31) being formed in said first attachment seat (33), said spherical head (32) being formed in said second attachment seat (34), the opening of said spherical recess (31) having a diameter greater than the diameter of said spherical head (32), said mounting mechanism (100) further comprising a positioning structure for restraining said spherical head (32) in said spherical recess (31).

6. A wheeled crane according to claim 5, characterised in that the locating structure comprises a locating plate (35) disposed at the outer end of the slot, the locating plate (35) is provided with a receiving hole (36) which can be fitted and coated on the periphery of the ball head (32), the inner surface profile of the receiving hole (36) is matched with the outer surface profile of the ball head (32), and the diameter of the receiving hole (36) is configured to be tapered in a direction away from the slot.

7. A wheeled crane according to claim 6, characterised in that the positioning plate (35) comprises two partial plates (351) which are respectively detachably connectable to the first connection seats (33), the ends of the two partial plates (351) being respectively formed with a notch (352) to form the receiving hole (36) after the two partial plates (351) are docked.

8. A wheeled crane according to claim 6, characterised in that said positioning plate (35) is removably mounted on said first attachment seat (33) by means of fasteners, said mounting means (100) further comprising a sealing ring (37) arranged between said positioning plate (35) and said first attachment seat (33), said sealing ring (37) being provided with mounting holes (371) for said fasteners to pass through.

9. A wheeled crane according to any one of claims 1-8, further comprising a limiting structure arranged between said first frame section (11) and said second frame section (12) to limit the relative rotation angle of said first frame section (11) and said second frame section (12).

10. A wheeled crane according to claim 9, characterised in that the limiting structure comprises a limiting plate (41) mounted on one of the first frame section (11) and the second frame section (12) for stopping the other of the first frame section (11) and the second frame section (12), the surface of the limiting plate (41) in contact with the first frame section (11) and/or the second frame section (12) being provided with a cushioning pad (42).