阅读说明：本技术 配重容置架、配重组件以及平衡臂机构 (Counterweight containing frame, counterweight component and balance arm mechanism ) 是由 张声学 于 2019-11-19 设计创作，主要内容包括：本发明涉及起重机技术领域,公开了一种配重容置架、配重组件以及平衡臂机构,所述配重容置架(10)包括主架体(100)和安装部(14),所述主架体具有能够容置配重块的容置腔室,所述容置腔室具有能够供配重块进入的入口；所述安装部设置为能够将所述主架体安装在平衡臂(22)的配重区域的镂空格内。该配重容置架能够安装于平衡臂的配重区域和能够容纳配重块,使得配重块不易掉落,提高了作业安全性。通过在配重组件中设置上述配重容置架,从而使得所述配重块更稳固的配置在所述配重区域内,不易从高空掉落,提高了作业现场的安全性。通过在所述平衡臂上安装上述配重组件,可提高所述平衡臂机构的作业安全性,同时降低起吊成本。(The invention relates to the technical field of cranes and discloses a counterweight containing frame, a counterweight assembly and a balance arm mechanism, wherein the counterweight containing frame (10) comprises a main frame body (100) and a mounting part (14), the main frame body is provided with a containing chamber capable of containing a counterweight block, and the containing chamber is provided with an inlet for the counterweight block to enter; the installation department sets up to be able to with the body frame body is installed in the fretwork space in the counter weight region of balance arm (22). The counterweight holding frame can be installed in a counterweight area of the balance arm and can hold the counterweight block, so that the counterweight block is not easy to drop, and the operation safety is improved. The counterweight accommodating frame is arranged in the counterweight component, so that the counterweight block is more stably arranged in the counterweight area and is not easy to fall from the high altitude, and the safety of a working site is improved. By installing the counterweight component on the balance arm, the operation safety of the balance arm mechanism can be improved, and meanwhile, the hoisting cost is reduced.)

1. A counterweight containment frame, characterized in that said counterweight containment frame (10) comprises:

the main frame body (100) is provided with an accommodating chamber capable of accommodating a balancing weight, and the accommodating chamber is provided with an inlet capable of allowing the balancing weight to enter; and

the main frame body 100 is arranged in a hollow space of a counterweight area of the balance arm 22, and the mounting portion 14 is arranged to enable the main frame body 100 to be mounted.

2. A counterweight housing according to claim 1, characterized in that said main frame body (100) is arranged to be able to telescope in the width direction of the balance arm (22) to adapt to the dimensions in the width direction of the hollowed-out space.

3. The counterweight housing according to claim 2, wherein said main frame body (100) comprises a pair of first side frame walls (101) opposed to each other at a distance and a pair of second side frame walls (103) connecting said pair of first side frame walls (101), respectively, said first side frame walls (101) being parallel to a length direction of said balance arm (22), said second side frame walls (103) being parallel to a width direction of said balance arm (22), a pair of said first side frame walls (101) and a pair of said second side frame walls (103) collectively enclosing a peripheral wall forming said main frame body (100), said main frame body (100) comprising a bottom frame (110) provided at a bottom end opening of said peripheral wall, wherein: the second side frame wall (103) and the bottom frame (110) are both arranged to be capable of extending and contracting in the width direction of the balance arm (22).

4. A counterweight containment frame according to claim 3 in which the second side frame wall (103) and the base frame (110) are of identical construction, the second side frame wall (103) including side frame wall connection assemblies including pairs of side frame wall connection rods (105), the pairs of side frame wall connection rods (105) being disposed in opposition, first ends of the side frame wall connection rods (105) remote from each other being connected to the respective first side frame wall (101), the side frame wall connection assemblies including telescoping adjustment members (107) connecting the pairs of side frame wall connection rods (105), the telescoping adjustment members (107) being arranged to enable adjustment of the distance between second ends of the pairs of side frame wall connection rods (105) opposite each other.

5. The counterweight housing bracket of claim 4 wherein an end surface of said second end of one of said pair of side frame wall connecting rods (105) defines a first threaded bore and an end surface of said second end of the other defines a second threaded bore, wherein said first threaded bore and said second threaded bore are threaded in opposite directions;

the telescopic adjusting piece (107) comprises a threaded rod (109), a first external thread and a second external thread matched with the first threaded hole and the second threaded hole are respectively arranged at two ends of the threaded rod (109), and the threaded rod (109) is arranged to adjust the distance between the second ends through screwing.

6. A counterweight containment frame according to any of claims 3-5, characterized in that the second side frame wall (103) comprises a fixed support body (102), the fixed support body (102) being connected between a pair of the first side frame walls (101), and the fixed support body (102) being arranged to be able to be supported between the first side frame walls (101) at all times as the second side frame wall (103) is telescoped.

7. A counterweight containment frame according to claim 6, characterized in that said fixed support body (102) comprises:

the adjusting disc (120), the disc surface of the adjusting disc (120) is provided with an annular opening (128); and

a plurality of support rods (122), a first end of the support rods (122) being slidably connected to the annular opening (128), a first end of the support rods (122) being slidable along the annular opening (128), a second end of the support rods (122) being connected to the respective first side frame wall (101) by an adjustment assembly (124), wherein: the adjustment assembly (124) is configured such that a first end of the support rod (122) is reciprocally movable along a length of the support rod (122) when sliding along the annular opening (128) such that the support rod (122) is supportable between the adjustment disc (120) and the respective first side frame wall (101).

8. The counterweight housing bracket according to claim 6, wherein a boss (112) protruding toward the outside of the housing chamber is provided on the peripheral wall of the main bracket body (100);

the installation portion (14) comprises paired installation bases (140), one of the paired installation bases (140) is installed on the boss (112), the other one of the paired installation bases (140) can be installed on the balance arm (22), the paired installation bases (140) are arranged oppositely at intervals, the installation portion (14) comprises an installation adjusting rod (142) connected between the paired installation bases (140), and the installation adjusting rod (142) is arranged to drive the main frame body (100) to move in a reciprocating mode along the height direction of the main frame body (100).

9. A counterweight assembly, characterized in that it comprises a counterweight housing (10) according to any one of claims 1 to 8 and a counterweight placed in said housing chamber of said counterweight housing (10).

10. The counterweight assembly of claim 9 including a plurality of said counterweights, each of said counterweights having equal dimensions along the width and length of said main frame (100).

11. A balance arm mechanism, characterized in that it comprises a balance arm (22) and a counterweight assembly mounted on said balance arm (22), said counterweight assembly being as claimed in claim 9 or 10.

Technical Field

The invention relates to the technical field of cranes, in particular to a counterweight containing frame, a counterweight assembly and a balance arm mechanism.

Background

The tower crane (hereinafter referred to as tower crane) is a rotary crane with a movable arm mounted at the upper part of a high tower body, has large working space, is mainly used for vertical and horizontal conveying of materials and installation of building components in building construction, and is an essential device on a construction site. The tower crane mainly comprises a tower body, a portal frame, a tower top, a tower cap, a crane boom, a balance arm and other metal structures, as well as a lifting, amplitude changing, running and slewing mechanism, an electrical system, a safety device and the like.

The balancing weight is used for increasing the weight of the balancing weight to keep balance, is a necessary part when the tower crane works to hoist the weight, and has very important significance for keeping balance safety and stable reliability when the tower crane hoists the weight. The balance arm of the tower crane is usually provided with a balance weight mounting area, the balance arm is provided with a hollowed-out grid which penetrates through the side wall of the balance arm in the thickness direction in the balance weight mounting area, the hollowed-out grid is used for mounting a balancing weight, and the size of the hollowed-out grid in the width direction of the balance arm (the width direction of the hollowed-out grid is respectively perpendicular to the length direction and the thickness direction of the balance arm) is basically consistent with the width of the balance arm.

As shown in fig. 1, the weight 30 is suspended in the hollow grid of the balance arm 22 by short pins respectively disposed on opposite sides of the weight 30. Like this, not only the installation is comparatively difficult, also has the risk that the balancing weight dropped moreover.

Disclosure of Invention

The invention aims to solve the problem that a balancing weight is easy to fall off after being installed on a balancing arm in the prior art, and provides a counterweight containing frame which can be installed in a counterweight area of the balancing arm and can contain the balancing weight, so that the balancing weight is not easy to fall off, and the operation safety is improved.

In order to achieve the above object, an aspect of the present invention provides a weight housing stand, including:

the main frame body is provided with an accommodating chamber capable of accommodating a balancing weight, and the accommodating chamber is provided with an inlet for the balancing weight to enter; and

the installation department, the installation department sets up to can with the body frame body is installed in the fretwork check in the counter weight region of balance arm.

In the technical scheme, the main frame body is arranged in the counterweight area of the balance arm, so that the counterweight block can be placed in the main frame body, and compared with the suspended counterweight block, the counterweight block can be more stably arranged in the counterweight area, so that the counterweight block is not easy to fall from the high altitude, and the safety of an operation site is improved.

Preferably, the main frame body is arranged to be capable of extending and retracting along the width direction of the balance arm so as to adapt to the size of the hollow space in the width direction.

Preferably, the main frame body includes a pair of first side frame walls facing each other at an interval and a pair of second side frame walls connecting the pair of first side frame walls, respectively, the first side frame walls are parallel to the length direction of the balance arm, the second side frame walls are parallel to the width direction of the balance arm, the pair of first side frame walls and the pair of second side frame walls jointly enclose a peripheral wall forming the main frame body, the main frame body includes a bottom frame disposed at a bottom port of the peripheral wall, wherein: the second side frame wall with the underframe all sets up to be able to follow the width direction of balance arm is flexible.

Preferably, the second side frame wall with the structure of underframe is the same, the second side frame wall includes side frame wall coupling assembling, side frame wall coupling assembling includes mated side frame wall connecting rod, mated side frame wall connecting rod opposition sets up, keep away from each other's first end of side frame wall connecting rod and connect in corresponding first side frame wall, side frame wall coupling assembling includes the connection the flexible regulating part of mated side frame wall connecting rod, flexible regulating part sets up to can adjust the distance between the second end that is relative to each other of mated side frame wall connecting rod.

Preferably, the end surface of the second end of one of the paired side frame wall connecting rods is provided with a first threaded hole, and the end surface of the second end of the other side frame wall connecting rod is provided with a second threaded hole, wherein the thread turning directions of the first threaded hole and the second threaded hole are opposite;

the telescopic adjusting piece comprises a threaded rod, a first external thread and a second external thread are respectively arranged at two ends of the threaded rod, the first external thread and the second external thread are matched with the first threaded hole and the second threaded hole, and the threaded rod is arranged to adjust the distance between the second ends through screwing.

Preferably, the second side frame wall includes a fixed support body connected between the pair of first side frame walls, and the fixed support body is configured to be supported between the first side frame walls at all times along with the extension and contraction of the second side frame wall.

Preferably, the fixed support comprises:

the disc surface of the adjusting disc is provided with an annular opening; and

a plurality of support rods, the first end of each support rod being slidably connected to the annular opening, the first end of each support rod being slidable along the annular opening, and the second end of each support rod being connected to the corresponding first side frame wall by an adjustment assembly, wherein: the adjusting component is arranged in a manner that the first end part of the supporting rod can move back and forth along the length direction of the supporting rod when sliding along the annular opening, so that the supporting rod can be supported between the adjusting disc and the corresponding first side frame wall.

Preferably, a boss protruding towards the outside of the accommodating cavity is arranged on the peripheral wall of the main frame body;

the installation department includes mated mounting base, one in mated mounting base install in the boss, another can set up install in balance arm, and mated mounting base interval opposition, the installation department is including connecting installation regulation pole between mated mounting base, installation regulation pole sets up to can drive the body frame body is followed the direction of height reciprocating motion of the body frame body.

The invention provides a counterweight component, which comprises the counterweight containing frame and a counterweight block placed in the containing cavity of the counterweight containing frame. The counterweight accommodating frame is arranged in the counterweight component, so that the counterweight block is more stably arranged in the counterweight area, the counterweight block is not easy to fall from high altitude, and the safety of an operation site is improved.

Preferably, the counterweight assembly comprises a plurality of the counterweight blocks, and the sizes of the counterweight blocks in the width direction and the length direction of the main frame body are equal.

The invention provides a balance arm mechanism, which comprises a balance arm and a counterweight component arranged on the balance arm, wherein the counterweight component is the counterweight component provided by the invention. By installing the counterweight component provided by the invention on the balance arm, the operation safety of the balance arm mechanism can be improved, and the hoisting cost is reduced.

Drawings

FIG. 1 is a schematic view of a conventional mounting structure of a counterweight;

fig. 2 is a schematic view of the installation structure of the counterweight housing bracket of the preferred embodiment of the present invention;

FIG. 3 is a schematic perspective view of a weight housing of a preferred embodiment of the present invention;

FIG. 4 is a schematic perspective view of another angle of the weight-containing stand shown in FIG. 3;

FIG. 5 is a schematic front view of the weight-holding stand shown in FIG. 3;

fig. 6 is a sectional view schematically showing the structure of the support rod of the weight-accommodating shelf of fig. 3 at one end of the adjustment plate.

Description of the reference numerals

10-a counterweight housing shelf; 100-the main frame body; 101-a second side frame wall; 102-a stationary support; 103-a second side frame wall; 104-a pillar; 105-side frame wall connecting rods; 106-support ribs; 107-telescoping adjustment; 109-threaded rod; 110-bottom frame; 112-a boss; 120-a conditioning disk; 121-connecting plate; 122-a support bar; 123-connecting block; 124-an adjustment assembly; 125-adjusting rod; 126-connecting pin shafts; 127-connecting piece; 128-an annular opening; 14-a mounting portion; 140-a mounting base; 142-installing an adjusting rod; 20-a hoisting device; 22-a balance arm; 30-counterweight block.

Detailed Description

In the present invention, the use of directional terms such as "upper, lower, left and right" in the absence of a contrary explanation generally means that the directions shown in the drawings and the practical application are considered to be the same, and "inner and outer" mean the inner and outer of the outline of the component.

The present invention provides a counterweight housing stand, the counterweight housing stand 10 includes: the main frame body 100 is provided with an accommodating chamber capable of accommodating a balancing weight, the accommodating chamber is provided with an inlet capable of allowing the balancing weight to enter, and the balancing weight can be placed into the accommodating chamber through the inlet; the counterweight housing frame 10 further includes a mounting portion 14, and the mounting portion 14 is configured to be able to mount the main frame body 100 in a hollow lattice in the counterweight region of the balance arm 22. It is understood that the lifting device 20 may include a balance arm 22, the balance arm 22 defines a balance weight area, the balance arm 22 is provided with a hollow space at a portion of the balance weight area, the hollow space penetrates through a sidewall of the balance arm 22 in a thickness direction, wherein a direction perpendicular to a length direction of the balance arm 22 and parallel to a vertical direction is the thickness direction of the balance arm 22, and a direction perpendicular to the length direction of the balance arm 22 and parallel to a horizontal direction is the width direction of the balance arm 22, and the main frame 100 is installed in the hollow space through the installation portion 14, and it is understood that the installation portion 14 may be installed on the balance arm 22. Through installing the body frame 100 in the counter weight region at balance arm 22, can with the balancing weight is placed in body frame 100, compares like this and hangs and hang and put the balancing weight, can make the more firm configuration of balancing weight is in the counter weight region, from this the balancing weight is difficult for dropping from the high altitude, has improved the security of job site. The counterweight housing provided by the invention is particularly suitable for the hoisting device 20.

It should be noted that, for tower cranes of different types, the widths of the balance arms 22 are also different, and thus the sizes of the hollow spaces arranged in the counterweight mounting area are also different. From this, for make the body of body 100 can adapt to different tower machines, body of body 100 can set up to can stretch out and draw back in order to adapt to the size in the width direction of the hollow space along the width direction of balance arm 22. Like this, improved the commonality of body frame 100 to can be used for different tower machines with the balancing weight of the same size, and need not to set up correspondingly to the tower machine the balancing weight, the cost is reduced. Therefore, the universality of the balancing weight is improved, the balancing weight can be repeatedly utilized, and the storage management of the balancing weight is facilitated.

As shown in fig. 2, 3 and 4, the main frame 100 may include a pair of first side frame walls 101 spaced apart from each other and facing each other, and a pair of second side frame walls 103 respectively connecting the pair of first side frame walls 101, wherein the first side frame walls 101 may include a pair of columns 104 spaced apart from each other and facing each other, and a connecting column connecting the pair of columns 104, the connecting column being disposed at a bottom portion of the column 104, in order to improve structural stability of the first side frame walls 101, a supporting rib 106 supporting the connecting column and the corresponding column 104 may be disposed between the connecting column and the corresponding column 104, the two supporting ribs 106 may be disposed to intersect each other, the first side frame walls 101 may be parallel to a length direction of the balance arms 22, the second side frame walls 103 may be parallel to a width direction of the balance arms 22, the pair of first side frame walls 101 and the pair of second side frame walls 103 may together enclose a peripheral wall of the main frame 100, the main frame 100 may include a bottom frame 110 disposed at a bottom port, wherein: the second side frame wall 103 and the bottom frame 110 are both arranged to be capable of extending along the width direction of the balance arm 22, so that when the second side frame wall 103 and the bottom frame 110 extend along the width direction of the balance arm 22, the main frame body 100 can be adapted to the hollow grids of the balance arms of different tower cranes.

As shown in connection with fig. 3 and 4, the second side frame wall 103 may include a side frame wall coupling assembly including a pair of side frame wall connecting rods 105, preferably disposed at both bottom and top portions of the uprights 104, and more particularly, a pair of side frame wall connecting rods 105 disposed at both top and bottom portions of the uprights 104, whereby the overall structural stability of the main frame body 100 may be improved, the pair of side frame wall connecting rods 105 being disposed in opposition, first ends of the side frame wall connecting rods 105, which are distant from each other, being connectable to the respective first side frame walls 101, more particularly, a first end of one of the pair of side frame wall connecting rods 105 being connectable to one of the pair of opposed uprights 104, and a first end of the other being connectable to the other of the pair of opposed uprights 104, the side frame wall coupling assembly may include a telescopic adjustment member 107 connecting the pair of side frame wall connecting rods 105, the telescopic adjuster 107 may be provided between second ends of the pair of side frame wall connecting rods 105 opposite to each other, and the telescopic adjuster 107 may be provided to be able to adjust a distance between the second ends of the pair of side frame wall connecting rods 105 opposite to each other. In addition, the second sidewall 103 and the bottom frame 110 have the same structure, i.e. the bottom frame 110 may include a sidewall connecting assembly, the side frame wall coupling assembly may include a pair of side frame wall coupling rods 105, the pair of side frame wall coupling rods 105 being disposed in opposition, first ends of the side frame wall coupling rods 105, which are distant from each other, may be coupled to the respective first side frame wall 101, and specifically, a first end of one of the pair of side frame wall coupling rods 105 may be coupled to one of the opposing pair of coupling posts, a first end of the other may be coupled to the other of the opposing pair of coupling posts, the side frame wall coupling assembly may include a telescopic adjuster 107 coupling the pair of side frame wall coupling rods 105, the telescopic adjuster 107 may be disposed between second ends of the pair of side frame wall coupling rods 105 opposite to each other, and the telescopic adjuster 107 may be disposed to be able to adjust a distance between the second ends of the pair of side frame wall coupling rods 105 opposite to each other.

Therefore, it can be understood that the bottom frame 110 and the second side frame wall 103 can be extended and retracted along the width direction of the balance arm 22 through the telescopic adjusting member 107, so that the main frame body 100 can be adapted to hollow spaces with different widths. When the size of the hollow space is small, the bottom frame 110 and the second side frame wall 103 may be contracted toward the inside of the balance arm 22, when the size of the hollow space is large. The bottom frame 110 and the second side frame wall 103 can be made to extend outward of the balance arm 22.

Here, the structure of the telescopic adjuster 107 is not particularly limited as long as the distance between the second ends of the pair of side frame wall connecting rods 105, which are opposite to each other, can be adjusted. Preferably, a first threaded hole may be formed in an end surface of the second end of one of the paired side frame wall connecting rods 105, and a second threaded hole may be formed in an end surface of the second end of the other of the paired side frame wall connecting rods, wherein the first threaded hole and the second threaded hole have opposite thread directions; the telescopic adjustment member 107 may include a threaded rod 109, and first and second external threads fitted to the first and second threaded holes may be provided at both ends of the threaded rod 109, respectively, and the threaded rod 109 may be configured to adjust a distance between the second ends by being screwed. It should be noted that, when the threaded rod 109 is rotated in one direction, the distance between the second ends of the paired side frame wall connecting rods 105 that are opposite to each other may be made larger to achieve expansion of the main frame body 100 in the width direction of the balance arm 22, and when the threaded rod 109 is rotated in the other direction, the distance between the second ends of the paired side frame wall connecting rods 105 that are opposite to each other may be made smaller to achieve contraction of the main frame body 100 in the width direction of the balance arm 22.

In order to improve the stability of the second side frame wall 103, the second side frame wall 103 may include a fixed support 102, the fixed support 102 may be connected between a pair of the first side frame walls 101, specifically, the fixed support 102 may be connected between a pair of the opposite vertical posts 104, and the fixed support 102 may be configured to be always supported between the first side frame walls 101 as the second side frame wall 103 is extended and retracted.

As shown in fig. 3, 4 and 5, the fixed support 102 may include an adjusting disk 120, and an annular opening 128 may be formed on a disk surface of the adjusting disk 120; the fixed support 102 may include a plurality of, for example, four, support rods 122, the plurality of support rods 122 may be distributed along the circumferential direction of the adjustment disk 120 at intervals, first end portions of the support rods 122 may be slidably connected to the annular openings 128, preferably, a plurality of annular openings 128 may be opened on the disk surface of the adjustment disk 120, the plurality of annular openings 128 may respectively correspond to the plurality of support rods 122 one to one, first end portions of the support rods 122 may be slidably connected to the corresponding annular openings 128, first end portions of the support rods 122 may be slidable along the annular openings 128, and second end portions of the support rods 122 may be connected to the corresponding first side frame walls 101 through the adjustment assembly 124, wherein: the adjustment assembly 124 may be configured such that the first end of the support rod 122 is reciprocally movable along the length of the support rod 122 as the support rod 122 slides along the annular opening 128 to enable the support rod 122 to be supported between the adjustment plate 120 and the corresponding first side frame wall 101. It will be appreciated that when the second side frame wall 103 and the bottom frame 110 are adjusted to reciprocate along the width direction of the balance arm 22, the first end of the support rod 122 can be slid to a proper position along the annular opening 128, and at the same time, the adjusting assembly 124 reciprocates along the length direction of the support rod 122, and the fine adjustment of the adjusting assembly 124 can be performed, so that the support rod 122 can be supported between the adjusting plate 120 and the corresponding first side frame wall 101, and particularly, the support rod 122 can be supported between the adjusting plate 120 and the corresponding upright post 104 when the second side frame wall 103 and the bottom frame 110 are extended or retracted to a predetermined position. In addition, it should be noted that when the second side frame wall 103 and the bottom frame 110 are extended or retracted, the first end of the supporting rod 122 can slide and the second end of the supporting rod 122 can be adjusted accordingly, and when the second side frame wall 103 and the bottom frame 110 are extended or retracted to a predetermined position, the first end of the supporting rod 122 can be fixed to a corresponding position of the adjusting plate 120, and the adjusting assembly 124 can be extended or retracted to a corresponding position.

In addition, as shown in fig. 4 and 6, the first end of the supporting rod 122 may be provided with a pair of connecting pieces 127, the pair of connecting pieces 127 are opposite and spaced apart, a gap into which the adjusting plate 120 can extend is formed between the pair of connecting pieces 127, and the connecting pin 126 may pass through the pair of connecting pieces 127 and the corresponding annular opening 128 so that the first end of the supporting rod 122 may be slidably connected to the corresponding annular opening 128, and in addition, the connecting pin 126 may fix the first end of the corresponding supporting rod 122 at a corresponding position of the adjusting plate 120.

In addition, a first connection threaded hole may be formed in an end surface of the second end portion of the support rod 122, as shown in fig. 3, the adjustment assembly 124 may include an adjustment rod 125 and a connection block 123 connected to the corresponding first side frame wall 101, such as the corresponding upright column 104, the end surface of the connection block 123 adjacent to the corresponding support rod 122 is formed with a second connection threaded hole, the second connection threaded hole has a thread turning direction opposite to that of the first connection threaded hole, and both ends of the adjustment rod 125 are respectively provided with a first connection external thread and a second connection external thread which are matched with the second connection threaded hole and the first connection threaded hole. The adjustment rods 125 may be configured to be adjusted by screwing such that the adjustment assemblies 124 reciprocate along the length of the corresponding support rods 122. It should be noted that when the adjusting rod 125 is rotated in one direction, the adjusting assembly 124 can be moved away from the second end of the corresponding supporting rod 122; and when the adjustment rods 125 are rotated in the other direction, the adjustment assemblies 124 may be moved in a direction close to the second ends of the corresponding support rods 122.

In order to make fine adjustment of the adjustment assembly 124 more accurate and flexible, the adjustment assembly 124 may include a connection plate 121, one end of the connection plate 121 is connected to the first side frame wall 101, and the other end of the connection plate 121 is hinged to a corresponding connection block 123, and the connection block 123 may be connected to the corresponding first side frame wall 101 through the connection plate 121. In this way, when the adjusting rod 125 drives the adjusting assembly 124 to reciprocate along the length direction of the supporting rod 122, the connecting angle between the central axis of the connecting block 123 and the first side frame wall 101 can be adjusted through the connecting plate 121, thereby improving the flexibility and accuracy of fine adjustment of the adjusting assembly 124. In addition, it can be understood that the hinge of the connection plate 121 and the corresponding connection block 123 can be fixed when the second side frame wall 103 and the bottom frame 110 are extended or contracted to a predetermined position.

As shown in fig. 3 and 4 in conjunction, a boss 112 protruding toward the outside of the accommodation chamber may be provided on the peripheral wall of the main frame body 100, for example, the side frame wall connecting rod 105 at the top of the peripheral wall may be extended beyond the peripheral wall to form the boss 112.

The mounting portion 14 may include a pair of mounting bases 140, one of the pair of mounting bases 140 may be mounted to the boss 112, and the other may be mounted to the balance arm 22, and the pair of mounting bases 140 are spaced and opposed to each other, and the mounting portion 14 may include a mounting adjustment rod 142 connected between the pair of mounting bases 140, it being understood that, when the weight-accommodating shelf 10 is not mounted to the cutout, the pair of mounting bases 140 may be connected together by the mounting adjustment rod 142, when the weight-accommodating shelf 10 is mounted to the cutout, one of the mounting bases 140 may be mounted to the boss 112, the other mounting base 140 may be mounted to the balance arm 22, and the mounting adjustment rod 142 may be configured to drive the main frame 100 to reciprocate along a height direction of the main frame 100, wherein the height direction of the main frame 100 coincides with a thickness direction of the balance arm 22.

Preferably, a first adjusting threaded hole and a second adjusting threaded hole may be respectively formed in the end surfaces of the paired mounting bases 140, which are opposite to each other, and the first adjusting threaded hole and the second adjusting threaded hole have opposite thread turning directions, and a first adjusting external thread and a second adjusting external thread which are matched with the first adjusting threaded hole and the second adjusting threaded hole are respectively formed at both ends of the mounting adjustment rod 142. The installation adjustment rod 142 may be configured to drive the main frame 100 to reciprocate along the height direction of the main frame 100 by screwing.

The invention also provides a counterweight component, which comprises the counterweight containing frame 10 and a counterweight block placed in the containing cavity of the counterweight containing frame 10. By arranging the counterweight containing frame 10 provided by the invention in the counterweight component, the counterweight block is more stably arranged in the counterweight area, so that the counterweight block is not easy to fall from high altitude, and the safety of an operation site is improved.

Wherein, the counter weight subassembly includes the polylith the balancing weight, every the size on the width direction and the length direction of edge body frame 100 of balancing weight equals, can set up standard balancing weight so as to be applicable to different tower machines from this. Like this, need not to set up corresponding balancing weight to different tower machines for the balancing weight can reuse, the cost is reduced. It should also be noted that, in order to meet the counterweight requirements, the thickness of the counterweight block can be set as desired. Here, the main frame 100 has a width direction and a length direction that coincide with the width direction and the length direction of the balance arm 22, respectively.

The invention also provides a balance arm mechanism which comprises a balance arm 22 and a counterweight component arranged on the balance arm 22, wherein the counterweight component is the counterweight component provided by the invention. By mounting the counterweight assembly provided by the present invention on the balance arm 22, the operational safety of the balance arm mechanism can be improved while the hoisting cost is reduced.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.