CN209974156U

CN209974156U - Novel cantilever crane

Info

Publication number: CN209974156U
Application number: CN201920859934.9U
Authority: CN
Inventors: 刘云峰; 李享; 徐龙俊
Original assignee: Changzhou Changkuang Hoisting Machinery Co Ltd
Current assignee: Changzhou Changkuang Hoisting Machinery Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-01-21
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to a lifting means technical field especially relates to a novel cantilever crane, include: the device comprises a support column, a cross beam seat and a cross beam; the bottom of the cross beam seat is fixed on the support column, and one side wall of the cross beam seat is fixed with the cross beam; the crossbeam seat still includes compensating beam and compensating beam driving piece, the compensating beam with crossbeam parallel arrangement, and the slip is fixed in on the crossbeam seat, the compensating beam driving piece is fixed on the crossbeam seat, and with the compensating beam is connected, is used for the drive the compensating beam is in the length direction of crossbeam removes. Through set up the compensating beam parallel with the crossbeam on the crossbeam seat to and through the drive of compensating beam driving piece, make the compensating beam along with the parallel direction of crossbeam removes, thereby it is balanced mutually with the crossbeam of fixing in crossbeam seat one side, reduced the too big problem of stress between crossbeam and the crossbeam seat that exists among the prior art, improved the security performance.

Description

Novel cantilever crane

Technical Field

The utility model relates to a lifting means technical field especially relates to a novel cantilever crane.

Background

The cantilever crane is a new generation of light hoisting equipment manufactured for adapting to modern production, is widely applied to various industries such as hoisting transportation, metallurgy, electric power, ports and docks, automobiles and the like, mainly comprises a support column and a cantilever beam with one end fixed on the support column, a movable electric hoist is arranged on the cantilever beam, the object is hoisted and carried by a hook on the electric hoist, and the cantilever crane is suitable for short distance, frequent use and intensive hoisting operation, and has the characteristics of high efficiency, energy conservation, trouble saving, small occupied area, easy operation and maintenance and the like.

However, because the other end of the cantilever beam of the cantilever crane is arranged in a suspended manner, the longer the cantilever beam is, and because of the gravity of the cantilever beam, the stress on the supporting column is larger at the contact point of the cantilever beam and the supporting column, which is also the place where the cantilever crane is most likely to cause problems. In order to overcome the problems, the common mode in the prior art is that a reinforcing rib is arranged between a cantilever beam and a support column, so that the stress is dispersed, and in addition, the hoisting weight can be limited by a hoisting machine, so that safety accidents caused by the heavy weight of hoisted objects are prevented.

In view of the above problems, the designer is based on practical experience and professional knowledge that the engineering of such products is applied for many years, and is matched with the application of scholars to actively carry out research and innovation, so as to create a novel cantilever crane, and the novel cantilever crane is more practical.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a novel cantilever crane to reduce the stress between the contact points of a cross beam and a support column.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a novel jib crane comprising: the device comprises a support column, a cross beam seat and a cross beam;

the bottom of the cross beam seat is fixed on the support column, and one side wall of the cross beam seat is fixed with the cross beam;

the crossbeam seat still includes compensating beam and compensating beam driving piece, the compensating beam with crossbeam parallel arrangement, and the slip is fixed in on the crossbeam seat, the compensating beam driving piece is fixed on the crossbeam seat, and with the compensating beam is connected, is used for the drive the compensating beam is in the length direction of crossbeam removes.

Preferably, the balance beam penetrates through the cross beam seat and penetrates through the cross beam, and a rack and a sliding track which are arranged along the length direction of the balance beam are arranged on the balance beam;

the balance beam driving part is a motor, a gear is fixed on a rotating shaft of the balance beam driving part, and the gear is meshed with the rack so as to drive the balance beam to move;

the crossbeam seat is provided with a channel for the balance beam to pass through, a rolling bearing is arranged in the channel, and the rolling bearing corresponds to the sliding rail so as to support the balance beam to move.

Preferably, the crossbeam seat still includes the motor mounting, motor mounting detachable fixes on the crossbeam seat.

Preferably, a rack fixing groove is further formed in the balance beam, the length of the rack fixing groove is smaller than that of the balance beam, and the end portion of the balance beam is not provided with a penetrating device.

Preferably, the slide rail is provided on each side wall of the balance beam and is provided to penetrate one end portion of the balance beam.

Preferably, still include stress test spare and weighing sensor, the stress test spare includes first connecting portion, second connecting portion and test portion, first connecting portion with the crossbeam is connected, the second connecting portion with crossbeam seat/support column are connected, weighing sensor is fixed in on the lateral wall of crossbeam seat/support column, the test portion with the weighing sensor contact sets up, in order to with some transmissions of the power that receive on the crossbeam are for on the weighing sensor.

Preferably, the stress test piece is detachably fixed on the cross beam and the cross beam seat/support column.

Preferably, the balance beam driving part and the weighing sensor are both electrically connected with the PLC control module; when the force measured by the weighing sensor is increased, the PLC control module controls the balance beam driving part to drive the balance beam to move towards the direction far away from the cross beam seat until the force measured by the weighing sensor is decreased or the balance beam reaches the limit position and stops; when the force measured by the weighing sensor is reduced, the PLC control module controls the balance beam driving part to drive the balance beam to move towards the direction close to the cross beam seat until the force measured by the weighing sensor is increased or the balance beam stops when reaching the limit position.

Preferably, the balance beam is further provided with a hook, so that when the balance beam is far away from the beam seat and reaches a limit position, the balance beam is pulled by external force to reduce stress between the beam seat and the beam.

The utility model has the advantages that: through set up the compensating beam parallel with the crossbeam on the crossbeam seat to and through the drive of compensating beam driving piece, make the compensating beam along with the parallel direction of crossbeam removes, thereby it is balanced mutually with the crossbeam of fixing in crossbeam seat one side, reduced the too big problem of stress between crossbeam and the crossbeam seat that exists among the prior art, improved the security performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a novel cantilever crane in an embodiment of the present invention;

fig. 2 is a schematic structural view of an equalizing beam in the embodiment of the present invention;

FIG. 3 is a side view of the cross beam support base in the embodiment of the present invention;

FIG. 4 is an exploded view of the cross beam support base according to the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 1 according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a stress test piece according to an embodiment of the present invention.

Reference numerals: 1-supporting column, 2-crossbeam seat, 3-crossbeam, 4-stress test piece, 5-weighing sensor, 21-balance beam, 22-balance beam driving piece, 23-channel, 24-motor fixing piece, 41-first connecting part, 42-second connecting part, 43-test part, 211-rack, 212-sliding track, 213-rack fixing groove, 221-gear and 231-rolling bearing.

Detailed Description

In order to solve the problem of the stress between the crossbeam and the support column of cantilever crane among the prior art too big, the utility model provides a novel cantilever crane utilizes a mobilizable compensating beam, and gravity when coming compensating beam and hoist lifts by crane is to the effort of support column, and the compensating beam orientation removes with the opposite direction of crossbeam to the stress of support column has been reduced.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The novel jib crane shown in fig. 1 comprises: the device comprises a support column 1, a cross beam seat 2 and a cross beam 3;

the bottom of the crossbeam seat 2 is fixed on the support column 1, and one side wall of the crossbeam seat 2 is fixed with the crossbeam 3; in this embodiment, support column 1 and crossbeam seat 2 adopt the structure of steel pipe flange, are convenient for process and installation. The crossbeam 3 is provided with a movable electric hoist and a lifting hook for lifting.

Crossbeam seat 2 still includes compensating beam 21 and compensating beam driving piece 22, and compensating beam 21 and crossbeam 3 parallel arrangement, and the slip is fixed in on crossbeam seat 2, and compensating beam driving piece 22 is fixed on crossbeam seat 2 to be connected with compensating beam 21, be used for driving compensating beam 21 to remove in the length direction of crossbeam 3.

In the above embodiment, the balance beam 21 parallel to the cross beam 3 is arranged on the cross beam seat 2, and the balance beam 21 is driven by the balance beam driving part 22 to move in the direction parallel to the cross beam 3, so as to balance with the cross beam fixed on one side of the cross beam seat 2, thereby reducing the problem of overlarge stress between the cross beam and the cross beam seat in the prior art, and improving the safety performance.

In order to improve the structural balance performance of the novel cantilever crane, please refer to fig. 1 ~ and fig. 3, the balance beam 21 passes through the beam seat 2 and penetrates the beam 3, and the balance beam 21 is provided with a rack 211 and a sliding rail 212 arranged along the length direction of the balance beam 21, wherein the sizes of the beam 3 and the balance beam 21 are reasonably set, so that the balance beam 21 penetrates into the beam 3 without reducing the strength of the beam 3.

As shown in fig. 3, the balance beam driving member 22 is a motor, a gear 221 is fixed on a rotating shaft of the motor, and the gear 221 is engaged with the rack 211 to drive the balance beam 21 to move;

with continued reference to fig. 3, the cross beam seat 2 is provided with a channel 23 for the balance beam 21 to pass through, and a rolling bearing 231 is arranged in the channel 23, and the rolling bearing 231 corresponds to the sliding rail 212 to support the balance beam 21 to move.

In the above embodiment, the balance beam 21 is arranged to move in the beam seat 2 and the beam 3, so that the stress of the whole support column 1 is more balanced, and the problem of damage caused by inclination can not occur after long-term use. And through antifriction bearing 231 and the cooperation of slip track 212, rack 211 and gear 221 complex structure, realized that the rotation through the motor drives compensating beam 21 and removes, simple structure sets up rationally. It should be noted that, in the above embodiment, the motor may be driven by an electrically controlled switch (not shown in the figure) connected by wire, and the movement of the balance beam 21 is realized by the forward and reverse rotation of the motor.

As shown in fig. 4, the beam seat 2 further includes a motor fixing member 24, and the motor fixing member 24 is detachably fixed to the beam seat 2. The motor fixing piece 24 is detachably fixed on the cross beam seat 2, so that the motor can be conveniently overhauled.

Referring to fig. 2, the balance beam 21 is further provided with a rack fixing groove 213, and the length of the rack fixing groove 213 is smaller than that of the balance beam 21 and is not perforated at the end of the balance beam 21. Here, the rack fixing groove 213 is not perforated to limit the moving distance of the balance beam 21, and when the balance beam 21 moves in a direction away from the girder base 2, the balance beam 21 is prevented from sliding out of the girder base 2, and when the gear 221 moves to the end of the rack fixing groove 213, the rotation is stopped, thereby preventing a safety accident caused by the sliding out of the balance beam 21.

Referring to fig. 2, the sliding rail 212 is disposed on each sidewall of the balance beam 21 and is disposed to penetrate one end of the balance beam 21. The sliding rail 212 is disposed through the end of the balance beam 21 close to the beam seat 2 to facilitate the installation of the balance beam 21. In the specific installation, the motor fixing member 24 is detached and lifted, then the sliding rail 212 of the balance beam 21 is aligned with the rolling bearing 231 fixed in the beam seat 2 from the end of the balance beam 21, and after the sliding rail 212 of the balance beam 21 is slid in, the motor fixing member 24 is fixed, so that the gear 221 is engaged with the rack 211 in the rack fixing groove 213. It should be noted that, after the balance beam 21 is installed, the size of the end of the balance beam 21 far away from the side of the beam seat 2 is larger than the size of the body of the balance beam 21, so as to prevent the balance beam 21 from slipping out from the other side when moving toward the beam seat 2.

In order to embody the stress between the cross beam 3 and the cross beam seat 2, as shown in fig. 1, 5 and 6, the device further includes a stress testing piece 4 and a load cell 5, the stress testing piece 4 includes a first connecting portion 41, a second connecting portion 42 and a testing portion 43, the first connecting portion 41 is connected with the cross beam 3, the second connecting portion 42 is connected with the cross beam seat 2/the support column 1, the load cell 5 is fixed on the side wall of the cross beam seat 2/the support column 1, and the testing portion 43 is in contact with the load cell 5 to transmit a part of the force applied to the cross beam 3 to the load cell 5. The weighing sensor 5 is a device which converts a mass signal into a measurable electric signal and outputs the measurable electric signal. The test portion 43 is in contact with the force-receiving point of the load cell 5, and measures the magnitude of the force by pressing. Because the bearing capacity of the weighing sensor 5 is limited, the mode of directly transmitting the acting force between the cross beam 3 and the cross beam seat 2 to the weighing sensor 5 is not advisable, which easily causes the damage of the weighing sensor 5, in the embodiment, the testing piece 4 is respectively connected with the cross beam 3 and the cross beam seat 2, which plays the role of a reinforcing rib, meanwhile, the lowest end of the testing piece 4 is provided with a part which is not contacted with the cross beam seat 2/the supporting column 1 and is contacted with the weighing sensor 5, the force received on the weighing sensor 5 is dispersed to a great part by the stress testing piece 4, but the change of the force can still be measured due to the deformation of the stress testing piece 4, the force transmitted by the cross beam 3 is measured by using the weighing sensor 5 and the stress testing piece 4, wherein the weighing sensor 5 is the prior art, the size of the measured acting force can be directly displayed through debugging, in the actual production, the worker can move the balance beam 21 according to the magnitude of the force value displayed on the load cell 5, so that the acting force of the cross beam 3 on the cross beam seat 2 or the support column 1 is minimized.

After a long period of use, the stress test piece 4 may be deformed due to long-term wear, the effect of the transmission force is weakened, so that the display of the weighing sensor 5 is inaccurate, and in order to overcome the above-mentioned problem, the stress test piece 4 is detachably fixed to the cross beam 3 and the cross beam base 2/the support column 1. As shown in fig. 5 and 6, the stress test piece 4 is provided with a connection hole, and the stress test piece 4 is fixed by a fastening member. The stress test piece 4 can be detachably arranged, the display accuracy of the weighing sensor 5 is improved, and the safety performance is further improved.

In order to realize the automatic adjustment of the balance beam 21, the utility model also comprises a PLC control module, and the balance beam driving piece 22 and the weighing sensor 5 are both electrically connected with the PLC control module; when the force measured by the weighing sensor 5 is increased, the PLC control module controls the balance beam driving part 22 to drive the balance beam 21 to move towards the direction far away from the crossbeam seat 2 until the force measured by the weighing sensor 5 is decreased or the balance beam reaches the limit position and stops; when the force measured by the weighing sensor 5 is smaller, the PLC control module controls the balance beam driving part 22 to drive the balance beam 21 to move towards the direction close to the cross beam seat 2 until the force measured by the weighing sensor 5 is larger or the balance beam reaches the limit position and stops. And the PLC control module is adopted for automatic control, so that the response speed and the working efficiency of the crane are greatly improved.

In order to further balance the cross beam 3 of the crane when the balance beam 21 reaches the limit position and a heavy object with a heavy weight is lifted, a hook (not shown in the figure) is further arranged on the balance beam 21, so that when the balance beam 21 is far away from the cross beam seat 2 and reaches the limit position, the balance beam 21 is pulled by external force to reduce the stress between the cross beam seat 2 and the cross beam 3. Specifically, the steel wire rope is arranged to connect the end of the balance beam 21 with the ground or other objects with close weight, so that the stress between the cross beam 3 and the cross beam seat 2 is reduced.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel jib crane, comprising: the device comprises a support column (1), a cross beam seat (2) and a cross beam (3);

the bottom of the cross beam seat (2) is fixed on the support column (1), and one side wall of the cross beam seat (2) is fixed with the cross beam (3);

crossbeam seat (2) still include compensating beam (21) and compensating beam driving piece (22), compensating beam (21) with crossbeam (3) parallel arrangement, and the slip is fixed in on crossbeam seat (2), compensating beam driving piece (22) are fixed on crossbeam seat (2), and with compensating beam (21) are connected, are used for the drive compensating beam (21) are in the length direction of crossbeam (3) removes.

2. The novel cantilever crane according to claim 1, wherein the balance beam (21) is arranged through the beam seat (2) and the beam (3), and the balance beam (21) is provided with a rack (211) and a sliding track (212) arranged along the length direction of the balance beam (21);

the balance beam driving part (22) is a motor, a gear (221) is fixed on a rotating shaft of the balance beam driving part, and the gear (221) is meshed with the rack (211) to drive the balance beam (21) to move;

the crossbeam seat (2) is provided with a channel (23) for the balance beam (21) to pass through, a rolling bearing (231) is arranged in the channel (23), and the rolling bearing (231) corresponds to the sliding track (212) so as to support the balance beam (21) to move.

3. The new jib crane according to claim 2 wherein said beam mount (2) further comprises a motor mount (24), said motor mount (24) being removably secured to said beam mount (2).

4. The novel cantilever crane according to claim 2, wherein the balance beam (21) is further provided with a rack fixing groove (213), the length of the rack fixing groove (213) is smaller than that of the balance beam (21), and the rack fixing groove is not penetrated at the end of the balance beam (21).

5. A new jib crane according to claim 4 wherein said sliding tracks (212) are provided on each side wall of the balance beam (21) and are arranged through one end of the balance beam (21).

6. The novel cantilever crane according to claim 1, further comprising a stress test piece (4) and a load cell (5), wherein the stress test piece (4) comprises a first connecting portion (41), a second connecting portion (42) and a test portion (43), the first connecting portion (41) is connected with the beam (3), the second connecting portion (42) is connected with the beam seat (2)/support column (1), the load cell (5) is fixed on the side wall of the beam seat (2)/support column (1), and the test portion (43) is in contact with the load cell (5) so as to transmit part of the force applied to the beam (3) to the load cell (5).

7. The new jib crane according to claim 6, wherein the stress test piece (4) is detachably fixed to the beam (3) and the beam mount (2)/support column (1).

8. The novel jib crane of claim 6 further comprising a PLC control module, wherein said balance beam drive (22) and said load cell (5) are both electrically connected to said PLC control module; when the force measured by the weighing sensor (5) is increased, the PLC control module controls the balance beam driving part (22) to drive the balance beam (21) to move towards the direction far away from the cross beam seat (2) until the force measured by the weighing sensor (5) is reduced or the balance beam stops when reaching the limit position; when the force measured by the weighing sensor (5) is reduced, the PLC control module controls the balance beam driving piece (22) to drive the balance beam (21) to move towards the direction close to the cross beam seat (2) until the force measured by the weighing sensor (5) is increased or the balance beam stops when reaching the limit position.

9. A novel jib crane according to claim 8 wherein said balance beam (21) is further provided with a hook to facilitate pulling said balance beam (21) with external force to reduce stress between said beam mount (2) and said beam (3) when said balance beam (21) is away from said beam mount (2) to an extreme position.