CN217578110U

CN217578110U - Arm section, cargo boom and tower crane

Info

Publication number: CN217578110U
Application number: CN202221653905.5U
Authority: CN
Inventors: 曾振跃; 朱寒冰; 刘锋
Original assignee: Hunan Sany Tower Lifting Machinery Co Ltd
Current assignee: Hunan Sany Tower Lifting Machinery Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-14
Anticipated expiration: 2032-06-29
Also published as: WO2024000892A1

Abstract

The application provides an arm section, a cargo boom and a tower crane, wherein the arm section comprises an arm support; the disassembly and assembly component comprises a connecting piece and a driving piece fixed on the arm support, and the driving piece drives the connecting piece to move in a telescopic mode along the width direction of the arm support so as to enable the connecting piece to lock or unlock the trolley. The utility model provides an arm section is provided with the subassembly that carries out the dismouting operation automatically on it, can accomplish automatically with the fixed connection of dolly and remove fixed operation, eliminate the artifical potential safety hazard that carries out this operation, and labour saving and time saving, improve the work efficiency of operating efficiency and tower machine, solved among the prior art and moved the dual-purpose tower machine of flat arm and move when moving the flat arm mode switch, need the manual work to squeeze into or beat the round pin axle that dolly and arm section are connected, there is the problem of consuming time and power.

Description

Arm section, cargo boom and tower crane

Technical Field

The application relates to the technical field of tower cranes, in particular to an arm section, a crane boom and a tower crane.

Background

The traditional tower crane comprises a flat-arm tower crane (with a flat-arm mode) and a swing-arm tower crane (with a swing-arm mode), wherein a load-carrying trolley is arranged in the flat-arm tower crane, the load-carrying trolley is arranged on a cargo boom, and the load-carrying trolley moves on a lower chord of the cargo boom through a roller to change the lifting position of a flat-arm lifting hook, so that the amplitude-changing movement of the suspended load of the tower crane is realized. A traditional swing arm tower crane lifts an object through a lifting arm rotating in a pitching mode, and is not provided with a trolley. Therefore, the arm section of the flat-arm tower crane is different from the arm section of the swing-arm tower crane in structure and cannot be used universally.

At present, a movable and flat arm dual-purpose tower crane begins to be derived, and the movable and flat arm dual-purpose tower crane refers to a tower crane capable of realizing dual purposes of switching a movable arm mode and a flat arm mode. In the flat boom mode, the load-carrying trolley moves on the boom lower chord member, and the flat boom hook is used for lifting objects; when the movable arm mode is switched, the load-carrying trolley is manually fixed at the arm end section of the crane boom, and the trolley is lifted along with the crane boom; when the driven arm mode is switched to the flat arm mode, the load-carrying trolley and the arm end section need to be manually released from being fixed. Every time the use mode is switched, an operator needs to walk to the boom arm end section from the tower head to perform fixed connection or remove fixed operation, needs to manually drive in or drive out a pin shaft connected with the boom section, consumes time and labor, has certain potential safety hazards, and also influences the operation efficiency of the tower crane.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide an arm section, which is provided with a component for automatically performing a dismounting operation, and can automatically complete a fixed connection with a trolley and a fixing releasing operation, so as to solve the problem that in the prior art, when a movable flat arm mode of an existing dual-purpose tower crane with a movable flat arm is switched, a pin shaft connecting the trolley and the arm section needs to be manually driven in or out, which consumes time and labor.

In order to achieve the aim to a certain extent, the application provides an arm section which comprises an arm support; the disassembly and assembly component comprises a connecting piece and a driving piece fixed on the arm support, and the driving piece drives the connecting piece to move in a telescopic mode along the width direction of the arm support so as to enable the connecting piece to be locked or unlock the trolley.

In a possible embodiment, the drive element is designed as a motor and/or the connecting element is designed as a pin.

In a possible embodiment, the disassembling and assembling component includes a first disassembling and assembling component, a second disassembling and assembling component, and a third disassembling and assembling component, the first disassembling and assembling component and the second disassembling and assembling component are arranged along a first direction, the second disassembling and assembling component and the third disassembling and assembling component are arranged along a second direction, and the first direction intersects with the second direction.

In a possible implementation manner, the disassembling and assembling component further comprises a guide sleeve, and the guide sleeve is connected with the arm support and sleeved on the connecting piece.

In a possible embodiment, the connecting member is of a shaft body structure, a bearing penetrates through the guide sleeve, and the bearing is sleeved on the connecting member.

In one possible embodiment, there is further provided: the mounting base is connected with the arm support; and the detection switch is connected to the mounting seat and is positioned on the moving path of the trolley or one side of the moving path.

In a possible implementation manner, a limiting member is further provided, and the limiting member is detachably connected with the arm support and is located on a moving path of the trolley.

In a possible embodiment, the rope winding device further comprises a first rope winding pulley and a second rope winding pulley which are connected to the arm support, and the second rope winding pulley is located below the first rope winding pulley.

The application also provides a crane boom, which comprises the arm section as described in any one of the above.

The application also provides a tower crane, including dolly and as above arbitrary the jib loading boom, be provided with the confession on the frame of dolly the connecting hole that the connecting piece penetrated.

According to the arm section provided by the application, the driving part and the connecting part are arranged on the arm section, and the connecting part can extend out and be spliced with the trolley under the driving of the driving part, so that the trolley is fixed at one end of the crane boom, the crane boom can rotate in a pitching manner to lift an object, and the mode is switched to a movable arm mode; when the driving part drives the connecting part to retract, the trolley can be released from being fixed relative to the boom section, namely, the trolley can move along the lower chord of the crane boom to lift an object, and the crane boom is switched to a flat boom mode. The arm joint provided by the application can automatically complete the fixed connection between the cargo boom and the trolley or remove the fixed operation when the movable flat arm mode is switched through the dismounting assembly, eliminates the potential safety hazard of manual operation, saves time and labor compared with the manual operation of driving in or out the connecting pin shaft of the trolley and the arm joint, and improves the operation efficiency and the working efficiency of a tower crane.

Drawings

FIG. 1 is a schematic structural diagram of an arm segment according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a dismounting assembly according to an embodiment of the present application;

FIG. 3 is a schematic view showing the connection between the arm section and the cart in the embodiment of the present application;

FIG. 4 is a schematic view of a cart according to an embodiment of the present disclosure;

fig. 5 is another schematic structural view of the cart in the embodiment of the present application.

In FIGS. 1-5:

1. an arm section; 11. a boom; 111. a lower chord; 12. disassembling and assembling the components; 121. a drive member; 122. a connecting member; 123. a guide sleeve; 124. a bearing; 13. a mounting seat; 14. a limiting member; 15. a first rope sheave; 16. a second rope winding pulley; 17. an electric control cabinet; 2. a trolley; 21. a frame; 22. a connecting plate; 23. a fixed seat; 24. a first pulley; 25. a second pulley; 26. a third pulley; 27. a fourth pulley; 3. a hanging basket.

Detailed Description

The embodiment of the application is dedicated to providing an arm section, be provided with the subassembly that carries out the dismouting operation automatically on it, can accomplish automatically with the fixed connection of dolly and remove fixed operation, eliminate the artifical potential safety hazard that carries out this operation, and labour saving and time saving, improve the work efficiency of operating efficiency and tower machine, the problem of having the labour consuming time of the round pin axle that dolly and arm section are connected is squeezed into or beat out to the current dual-purpose tower machine of flat arm that moves when the flat arm mode is switched in to the current dual-purpose tower machine of flat arm that moves, and existing arm section is unsuitable for and moves the dual-purpose tower machine of flat arm and move, and the problem of having consuming time power exists. Embodiments of the present application are also directed to provide a jib and a tower crane comprising the above-described jib section.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

As shown in fig. 1 to 5, an embodiment of the present application provides an arm section 1, which includes an arm support 11 and a dismounting assembly 12 disposed on the arm support 11, the arm support 11 includes two lower chords 111 disposed in parallel, the dismounting assembly 12 includes a driving member 121 and a connecting member 122, the driving member 121 is fixedly connected to the arm support 11, the connecting member 122 is in transmission connection with the driving member 121 and is driven by the driving member 121 to move in a telescopic manner, a moving direction is the same as a width direction of the arm section 1, and a trolley 2 is movably connected to the arm section 1 through a roller and moves along a length direction of the lower chords 111, so that the connecting member 122 extends along the width direction of the arm support 11 and can be inserted into the trolley 2 (the trolley 2 has an insertion hole or a gap for inserting the connecting member 122), thereby fixing the trolley 2; or, the connecting member 122 extends out to the moving path of the trolley 2 and is located at one end of the trolley 2 at the end point of the boom arm, so that the connecting member 122 and a pushing point (a structure of the boom at the end point for preventing the trolley 2 from falling) on the boom (at the displacement end point of the trolley 2) for the trolley 2 to abut against are respectively blocked at two ends of the trolley 2 to limit the displacement of the trolley 2, thereby fixing the trolley 2 on the boom. Meanwhile, the driving power applied to the connecting piece 122 by the driving piece 121 can maintain the connecting piece 122 at the position of the locking trolley 2, and other parts or structures for preventing the connecting piece 122 from retracting accidentally, such as by vibration, are not needed, so that the stability of the fixed connection between the arm section 1 and the trolley 2 can be ensured.

So set up, arm festival 1 that this application embodiment provided, through the dismouting subassembly 12 that sets up automatic structure, can accomplish jib loading boom and 2 fixed connection of dolly automatically and remove fixed operation, eliminate the artifical potential safety hazard that carries out this operation, and compare and carry out this operation in the manual work, save time, be convenient for realize, the efficiency of accomplishing this operation has been improved, thereby also improved the work efficiency of tower machine, the problem that current arm festival is not suitable for the dual-purpose tower machine of flat arm of moving, the fixed connection of dolly and arm festival all needs the manual work to implement with removing fixed operation among the prior art is solved.

Specifically, the driving member 121 may be a motor or an air cylinder, and the connecting member 122 may be a pin or other members capable of being plugged. When the driving member 121 is a motor, the rotation power of the motor is changed into a transmission structure of the telescopic power, and the transmission structure can be fixed on the motor to form an electric cylinder. The electric cylinder has an output shaft which can move in a telescopic way, and the connecting piece 122 is connected to the output shaft.

In order to ensure that the connecting member 122 can be stably locked to the trolley 2, the disassembling and assembling components 12 may be one, two or more, such as three, and respectively include a first disassembling and assembling component, a second disassembling and assembling component and a third disassembling and assembling component. The first disassembling and assembling component and the second disassembling and assembling component are arranged along a first direction, the second disassembling and assembling component and the third disassembling and assembling component are arranged along a second direction, the first direction and the second direction are two non-parallel directions, but two directions which can be intersected are two directions, such as the width direction and the length direction of the arm section 1. Of course, the two removable modules 12 may be arranged in opposite positions or in a staggered arrangement in each arrangement direction (the first direction and the second direction). As shown in fig. 1, the first dismounting component and the second dismounting component are opposite in position in the width direction of the arm support 11, and the second dismounting component and the third dismounting component are arranged in a staggered manner in the length direction of the arm support 11 and are diagonally opposite.

Of course, it can also be said that the second direction is an angular direction between the width direction and the length direction of the arm support 11 (a connection line direction of the second dismounting assembly and the third dismounting assembly in the figure), and the second dismounting assembly and the third dismounting assembly are opposite to each other along the direction.

Through setting up three dismouting subassemblies 12 that are L type or are broken line type and distribute, distribute in two ascending three point fixation of side to dolly 2, the steadiness is high, can also solve dolly 2 and can produce the problem of rocking along with jib loading boom every single move in-process. It should be noted that the three removable modules 12 may be arranged at intervals along one direction.

When the trolley 2 is connected to the crane boom, the rollers are located on the upper end face of the lower chord 111, and the trolley 2 travels along the lower chord 111. Thus, the top end of the trolley 2 is above the lower chord 111 and most of the body area is below the lower chord 111. To facilitate the connection, and also for reasons of enhancing the stability of the connection, the removable assembly 12 is fixed to the lower chord 111 and is connected to the trolley 2 in the region of the height of the lower chord 111 or in the vicinity of the lower chord 111.

In order to improve the accuracy of the butt joint and the insertion connection between the connecting piece 122 and the trolley 2, the dismounting assembly 12 further comprises a guide sleeve 123, and the guide sleeve 123 is fixedly connected with the arm support 11 and sleeved on the connecting piece 122. The accuracy of the linear displacement of the connecting member 122 is improved by the guiding function of the guiding sleeve 123. The connecting piece 122 can be accurately inserted into a preset inserting hole in the trolley 2, so that the accuracy and reliability of automatic connection are ensured, and the phenomenon of automatic butt joint failure is avoided. Meanwhile, the guide sleeve 123 is fixedly connected with the arm support 11, when the connecting piece 122 is connected with the trolley 2 in a penetrating mode, the guide sleeve 123 and the trolley 2 are equivalently connected together in a penetrating mode, the force of the trolley 2 on the arm support 11 is transmitted to the arm support 11 from the connecting piece 122 and the guide sleeve 123, the acting force of the output shaft of the driving piece 121 is reduced, and the driving piece 121 is prevented from being damaged.

Further, the connecting member 122 is a shaft structure, such as a pin, and a bearing 124 or a shaft sleeve is disposed through the guiding sleeve 123. Bearing 124 or axle sleeve cover are established on being the connecting piece 122 of axis body structure, can enough guarantee the straight line guide effect, can play the lubrication action again, improve the smooth and easy nature of the flexible displacement of connecting piece 122, avoid blocking. The bearing 124 may specifically be a linear bearing.

In one embodiment, the arm section 1 is further provided with a mounting base 13 and a detection switch, the mounting base 13 is fixedly connected with the arm support 11, the detection switch is connected to the mounting base 13 and located on a moving path of the trolley 2 or on one side of the moving path, the detection switch is used for detecting whether the trolley 2 reaches a target position, and the detection switch and the driving member 121 are both electrically connected with a control system, such as a control system of a tower crane. Then, when the detection switch detects that the trolley 2 moves to the target position, i.e. the fixed connection position of the trolley 2 and the boom, a signal is sent, and the control system automatically starts the driving part 121 to extend the connecting part 122, so as to realize the fixed connection with the trolley 2. When the mode needs to be switched, the operator directly inputs information, such as pressing a button, and the driving member 121 drives the connecting member 122 to retract, so as to release the fixed connection with the trolley 2.

In actual use, the control system can be a control system of the tower crane and can also be an additionally arranged control system according to requirements. The control system comprises a controller and a communication line.

The detection switch may be a displacement sensor, such as a proximity switch.

In one embodiment, an electric control cabinet 17 is installed on the arm section 1, the electric control cabinet 17 is electrically connected with the driving member 121, and a control button is provided for controlling the starting and power supply of the driving member 121. Therefore, an operator can control the driving part 121 through a button on the electric control cabinet 17, can perform the fixed connection between the crane boom and the trolley 2 and the fixed mode conversion operation of the crane boom and the trolley, and has greater use convenience.

As shown in fig. 1, the arm segment 1 is further provided with a limiting member 14, and the limiting member 14 is detachably connected to the arm support 11 and is located on a moving path of the trolley 2. The limiting piece 14 is located at one end, close to the tower crane, of the arm section 1, when the trolley 2 moves to the end of the arm section 1, the limiting piece 14 abuts against the trolley 2, and the trolley 2 is prevented from continuously moving in the direction far away from the tower head. The jib portion 1 can be located on the jib, at the end of the jib remote from the tower head, and the limit stop 14 is located in an end position of the path of travel of the carriage 2 on the jib.

The limiting member 14 may be made of nylon, rubber, etc., and has a buffering function when abutting against the trolley 2. Of course, the stopper 14 may be made of a metal material, and is not particularly limited herein.

The limiting part 14 may be detachably connected to the lower chord 111 on the boom 11 through an installation part, the installation may be a fastening part, and may also include a fastening part and an adapter, the limiting part 14 may be detachably connected to the adapter through the fastening part, and the adapter is fixedly connected to the boom 11, or the limiting part 14 may be fixedly connected to the adapter, and the adapter may be detachably connected to the boom 11 through the fastening part.

After the trolley 2 is connected to the arm section 1, the rope of the tower crane luffing mechanism needs to be wound onto the trolley 2 through the rope winding pulley on the arm section 1 and connected to the trolley 2, since the arm section 1 is provided with the dismounting component 12, and the original rope winding pulley of the arm section 1 is usually located in the height area where the lower chord 111 is located or close to the lower chord 111, in order to avoid the rope led out from the rope winding pulley interfering with the dismounting component 12, in this embodiment, the arm section 1 includes a first rope winding pulley 15 and a second rope winding pulley 16 connected to the arm support 11, the first rope winding pulley 15 may be located opposite to the driving member 121, and in the same height area, for example, at least part of the two are located above the lower chord 111, and the second rope winding pulley 16 is located below the first rope winding pulley 15, for example, most of the area is located below the lower chord 111. The rope is led out from the second rope winding pulley 16 after passing through the first rope winding pulley 15 and the second rope winding pulley 16 which are arranged along the vertical direction, and then is connected to the trolley 2, so that the rope between the luffing mechanism and the first rope winding pulley 15 can be ensured not to interfere with the dismounting assembly 12, and the rope between the second rope winding pulley 16 and the rope fixing position on the trolley 2 can not interfere with the arm support 11.

The embodiment of the application also provides a crane boom, which comprises the arm sections 1 as described in any one of the above embodiments, and also comprises the conventional arm sections 1 without the dismounting assemblies 12, wherein the arm sections 1 are connected to form the crane boom. The jib loading boom that this embodiment provided, through the dismouting subassembly 12 that sets up automatic structure, can accomplish jib loading boom and 2 fixed connection of dolly automatically or remove fixed operation, eliminate the artifical potential safety hazard that carries out this operation, and compare in the manual work and carry out this operation, save the manual work, save time, be convenient for realize, improved the efficiency of accomplishing this operation to the work efficiency of tower machine has also been improved. The derivation process of the beneficial effect is substantially the same as the derivation process of the beneficial effect of the arm section 1 in the above embodiment, and is not described here again.

The embodiment of the application also provides a tower crane, which comprises a trolley 2 and a lifting arm as described in the above embodiments, namely, the tower crane comprises the arm section 1 as described in any one of the above embodiments, and a frame 21 of the trolley 2 is provided with a connecting hole for the connecting piece 122 to penetrate through. When the trolley 2 moves to the fixed connection position with the crane arm, the connection hole is opposite to the connecting piece 122, and the driving piece 121 drives the connecting piece 122 to extend out and penetrate into the connection hole. So set up, the tower machine that this application provided through the dismouting subassembly 12 that sets up automatic structure, can accomplish jib loading boom and 2 fixed connections of dolly automatically or remove fixed operation, eliminates the artifical potential safety hazard that carries out this operation, and compares and carries out this operation in the manual work, saves time, is convenient for realize, has improved the efficiency of accomplishing this operation to the work efficiency of tower machine has also been improved. The derivation process of the beneficial effect is substantially the same as the derivation process of the beneficial effect of the arm section 1 in the above embodiment, and is not described here again.

As shown in fig. 4, the frame 21 includes a first column, a second column, a third column and a fourth column, the first column and the second column are arranged along a first direction and are provided with connecting plates 22, the third column and the fourth column are arranged along the first direction and are connected by a cross bar, the first column and the third column are arranged along a second direction, and the second column and the fourth column are arranged along the second direction. The first direction is the longitudinal direction of the boom 11 and also the longitudinal direction of the frame 21, and the second direction is the width direction of the boom 11 and also the width direction of the frame 21.

Be provided with fixing base 23 on the horizontal pole, all be formed with the connecting hole that supplies connecting piece 122 to penetrate on two connecting plates 22 and the fixing base 23. In this arrangement, the frame 21 has three connecting holes, which can correspond to three detachable assemblies 12 in the above embodiment, and one connecting member 122 corresponds to one connecting hole, so as to achieve three-point connection between the boom and the trolley 2.

The trolley 2 further comprises a pulley assembly connected with the frame 21, the pulley assembly comprises a pulley yoke, a first pulley 24 and a second pulley 25, and the flat-arm lifting hook is connected to the pulleys of the pulley assembly through a rope. And the line connecting the first pulley 24 and the second pulley 25 forms an angle with the length direction of the frame 21.

In the parallel arm mode, the frame 21 moves in the longitudinal direction of the lower boom 111, and the longitudinal direction of the frame 21 coincides with the extending direction of the boom lower boom 111. In the movable arm mode, the frame 21 bears a flat arm lifting hook and synchronously rotates along with the cargo boom in a pitching mode, when the cargo boom is in a horizontal position, the lower chord 111 extends in the horizontal direction, the pitching angle is zero, and the trolley 2 is also in a horizontal position; the boom is rotated upwards from the horizontal position to create an elevation angle and is rotated downwards from the horizontal position to create a depression angle, and as the elevation angle increases, the inclination of the boom and trolley 2 relative to the horizontal position also increases. When the trolley 2 inclines, the horizontal distance (distance in the horizontal direction) between the first pulley 24 and the second pulley 25 in the pulley assembly is reduced, and the larger the inclination degree is, the smaller the horizontal distance is, and the larger the resistance to the movement of the rope is. When the pitching angle of the crane boom is large, the flat boom lifting hook cannot smoothly lift objects.

Therefore, in the present embodiment, the first pulley 24 and the second pulley 25 are arranged along the length direction of the frame 21 in a staggered manner, and the connecting line of the first pulley 24 and the second pulley 25 has an angle with the length direction of the frame 21, i.e. is arranged obliquely with respect to the length direction of the frame 21. So set up, compare the structural mode that two pulleys arranged along frame 21 length direction relatively among the prior art, dolly 2 of this embodiment, on the basis that need not to increase 2 length direction's of dolly size, the length of the line of first pulley 24 with second pulley 25 has been increased promptly, dolly 2 has also been increased under inclination, the horizontal distance between first pulley 24 and the second pulley 25, the projection of line at the horizontal direction promptly, 2 inclined state of dolly has been strengthened, to the row rope smoothness nature of flat arm lifting hook, make the flat arm lifting hook can go up and down smoothly and can lift by crane the object.

When the frame 21 is attached to the boom, the longitudinal direction of the frame 21 coincides with the extending direction of the lower chord 111. Taking the boom as an example in a horizontal position, when the boom is in the horizontal position, the lower chord 111 of the boom extends along the horizontal direction, the frame 21 is in the horizontal position, the length direction is the horizontal direction, and the connecting line of the first pulley 24 and the second pulley 25 forms an included angle with the horizontal direction of the lower chord 111, and is arranged in an inclined manner. When the boom is tilted to another tilt angle position other than the horizontal position, the horizontal distance between the first pulley 24 and the second pulley 25, i.e., the length of the projection of the connecting line in the horizontal direction, is significantly increased as compared with the horizontal distance between the two pulleys in the prior art (in the structural mode in which the pulleys are arranged opposite to each other in the longitudinal direction of the frame 21, i.e., the extending direction of the lower chord 111).

It can be seen that, in the boom mode, in the process of the boom pitching rotation, the flat-arm hook of the trolley 2 provided in this embodiment can still smoothly lift objects, and is suitable for a boom tower crane and also very suitable for a dual-purpose tower crane for both moving and leveling, which not only increases the lifting point of the tower crane in the boom mode, widens the use function, enhances the use performance of the tower crane, and improves the work efficiency, but also can lift heavy objects by using the lifting range moment which is very close to the tower body because the flat-arm hook under the trolley 2 in the boom mode is very close to the tower body, and significantly overcomes the disadvantage that the flat-arm hook at the end of the boom can only lift heavy objects in the boom mode. Therefore, the trolley 2 provided by the embodiment has high usability, is suitable for a swing arm mode tower crane and a swing arm-horizontal arm dual-purpose tower crane, overcomes the hoisting defect of the swing arm mode, enables the tower crane to work more efficiently, and obviously enhances the usability of the tower crane.

The pulley assembly further comprises a third pulley 26 and a fourth pulley 27, the third pulley 26 and the first pulley 24 being arranged opposite to each other along the length of the frame 21. The fourth pulley 27 is disposed coaxially with the third pulley.

The trolley 2 is also connected with a hanging basket 3 to facilitate people to carry objects.

The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.

The components, devices referred to in this application are provided as illustrative examples only and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the drawings. The components, devices may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the apparatus, devices of the present application, the components may be disassembled and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used for clearly explaining the technical solutions, and are not used for limiting the protection scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents and the like that are within the spirit and scope of the present application should be included.

Claims

1. An arm segment, comprising:

a boom;

the disassembly and assembly component comprises a connecting piece and a driving piece fixed on the arm support, and the driving piece drives the connecting piece to move in a telescopic mode along the width direction of the arm support so as to enable the connecting piece to be locked or unlock the trolley.

2. An arm segment according to claim 1, characterized in that the drive element is provided as a motor and/or the connecting element is provided as a pin.

3. The arm segment of claim 1, wherein the removable assembly comprises a first removable assembly, a second removable assembly, and a third removable assembly, the first removable assembly and the second removable assembly aligned in a first direction, the second removable assembly and the third removable assembly aligned in a second direction, the first direction intersecting the second direction.

4. The arm segment of claim 1, wherein the disassembling and assembling assembly further comprises a guide sleeve, and the guide sleeve is fixedly connected with the arm support and sleeved on the connecting piece.

5. The arm segment of claim 4, wherein the connecting member is a shaft structure, and a bearing is inserted into the guiding sleeve and sleeved on the connecting member.

6. The arm segment of claim 1, further provided with:

the mounting base is connected with the arm support;

and the detection switch is connected to the mounting seat and is positioned on the moving path of the trolley or on one side of the moving path.

7. The arm segment of claim 1, further comprising a stop member removably coupled to the arm support and positioned in a path of travel of the cart.

8. The arm segment of claim 1, further comprising a first wrap pulley and a second wrap pulley coupled to the arm support, the second wrap pulley being positioned below the first wrap pulley.

9. A crane boom comprising an arm segment according to any of claims 1-8.

10. The tower crane is characterized by comprising a trolley and a crane boom as claimed in claim 9, wherein a frame of the trolley is provided with a connecting hole for the connecting piece to penetrate through.