CN209837146U - Ceiling assembly of construction machine - Google Patents

Abstract

The utility model discloses a ceiling subassembly includes: a lower ceiling which is fixedly provided on one side of a driver's seat and has a pair of first and second lower pipes extending upward; an upper ceiling including a pair of first and second upper pipes connected to the first and second lower pipes, and supporting a ceiling at upper ends of the first and second upper pipes; a first flange portion provided at a lower end of each of the first and second upper pipes, and having a cross-sectional area larger than diameters of the first and second upper pipes; and a second flange portion provided at an upper end of each of the first and second lower pipes, having a cross-sectional area larger than diameters of the first and second lower pipes, and detachably coupled to the first flange portion by a fastening member.

Description

Ceiling assembly of construction machine

Technical Field

The utility model relates to a ceiling subassembly of engineering machine tool. More specifically, the present invention relates to a ceiling assembled structure for covering a driver's seat from above in a construction machine.

Background

Construction machines such as excavators and wheel loaders are designed to perform a variety of operations at a construction site. In general, a construction machine may include a lower body provided with a traveling body for traveling the construction machine, a working machine for performing work, a driver seat on which a driver rides, and an upper body that supports the working machine and the driver seat and is rotatably coupled to the lower body.

In particular, a ceiling is used to cover the top of a driver's seat to protect the driver from impact caused by falling objects from the outside or from a load generated when a construction machine is tilted, and is a driver seat protection structure of a mini excavator which is mainly installed in a cab (cabin) that is difficult to be isolated from the outside. The ceiling is required to satisfy rigidity up to the level required by the certification regulations for protecting the driver.

On the other hand, construction machines such as mini-excavators often perform work in a narrow space. However, even in the case of a small excavator, since the excavator is fixed to the ceiling of the upper body, there is a problem that it is difficult to perform work in a narrow space or enter a narrow work space.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a ceiling module that can be easily assembled by a driver and has improved rigidity against an external force.

The above object of the present invention can be achieved by the following technical solutions.

The ceiling assembly for implementing some exemplary embodiments of a subject of the present invention includes: a lower ceiling which is fixedly provided on one side of a driver's seat and has a pair of first and second lower pipes extending upward; an upper ceiling including a pair of first and second upper pipes connected to the first and second lower pipes, and supporting a ceiling at upper ends of the first and second upper pipes; a first flange portion provided at a lower end of each of the first and second upper pipes, and having a cross-sectional area larger than diameters of the first and second upper pipes; and a second flange portion provided at an upper end of each of the first and second lower pipes, having a cross-sectional area larger than diameters of the first and second lower pipes, and detachably coupled to the first flange portion by a fastening member.

In some exemplary embodiments, the first and second lower pipes may extend at a height lower than the driver seat.

In some exemplary embodiments, the first flange portion and the second flange portion corresponding to each other may have the same shape as each other.

In some exemplary embodiments, the ceiling assembly may further include a rigidity enhancing member disposed at a position spaced apart from a lower end of the lower ceiling by a set height, and supporting the first and second lower pipes at both ends.

In some exemplary embodiments, the ceiling assembly may further include an insertion extension extending from a lower end of each of the first and second upper pipes to be inserted inside the center control portion of each of the first and second lower pipes.

The utility model has the following effects.

According to some exemplary embodiments, since the ceiling assembly is composed of the upper ceiling and the lower ceiling which can be separated from each other, the upper ceiling can be easily separated according to the need, and thus the work in a narrow space can be facilitated.

According to some exemplary embodiments, a driver can easily combine and separate the upper and lower roofs with the flange portion provided to each of the upper and lower roofs.

Further, since the reinforcing member for supporting the load acting on the ceiling module is provided, it is possible to satisfy the certification regulation of top-over Protection Structure (Tip-over Protection Structure) rigidity that regulates the basis of the lateral load (lateral load).

According to some exemplary embodiments, the upper ceiling may be detachably fixed to the lower ceiling through a fastening block. The end portions of the first upper pipe and the second upper pipe of the upper ceiling may be inserted into the first lower pipe and the second lower pipe of the lower ceiling through the fastening block.

Therefore, geometrical discontinuity caused by a difference in diameter between the upper pipe and the lower pipe is minimized, so that stress concentration can be prevented. Thereby, excessive side load (lateral load) that may be induced by the geometrical discontinuity can be distributed to eliminate bending deformation caused by the hinge point in the upper pipe.

Further, the upper pipe is formed of a lightweight material, so that a driver can easily separate and assemble the upper pipe from the lower pipe.

However, the effects of the present invention are not limited to the above-mentioned effects, but can be variously expanded within a range not departing from the ideas and fields of the present invention.

Drawings

Fig. 1 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments.

Fig. 2 is an exploded perspective view illustrating the ceiling assembly of fig. 1.

Fig. 3 is a sectional view illustrating a portion a of fig. 2.

Fig. 4 is a cross-sectional view illustrating a fastening part of the ceiling assembly of fig. 2.

Fig. 5 is a cross-sectional view of a portion of a ceiling assembly illustrating some example embodiments.

Fig. 6 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments.

Fig. 7 is a perspective view illustrating a portion B of fig. 6.

Fig. 8 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments.

Fig. 9 is a sectional view illustrating a fastening structure of the ceiling assembly of fig. 8.

Fig. 10 is a cross-sectional view illustrating a fastening structure of a ceiling assembly of some exemplary embodiments.

Description of the symbols

10: seat base, 100: ceiling assembly, 110: lower ceiling, 111: lower base, 112 a: first lower tube, 112 b: second lower pipe, 113: hollow portion, 114: discharge port, 115: first fixing hole, 120: upper ceiling, 122 a: first upper pipe, 122 b: second upper pipe, 123: cover, 124: first connecting member, 125: second fixing hole, 126: second connecting member, 127: insertion extension, 130: fastening block, 131: receiving hole, 132: insertion portion, 134: head, 135a, 135b, 135 c: third fixing hole, 140: fixing bolt, 142: fixing nut, 150: flange portion, 151: first flange portion, 151 a: first through hole, 153: second flange portion, 153 a: a second through hole.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the drawings of the present invention, the size of the structure is shown enlarged than in practice for clarity of the present invention.

In the present invention, the terms first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used only for the purpose of distinguishing one constituent element from another constituent element.

When a certain component is referred to as being "directly connected" or "directly connected" to another component, it is to be understood that the component may be directly connected or connected to the other component, but another component may exist therebetween. Conversely, when a certain component is referred to as being "directly connected" or "directly connected" to another component, it is to be understood that no other component exists therebetween. Other expressions for explaining the relationship between the constituent elements, i.e., "between … …", "just between … …", or "adjacent to … …", "directly adjacent to … …", etc., should be so interpreted.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless the context clearly dictates otherwise, singular references include plural references. In the present application, terms such as "including" or "having" should be understood to specify the presence of stated features, integers, steps, actions, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, actions, elements, components, or groups thereof.

For the embodiments of the present invention disclosed herein, the specific structural and even functional descriptions are only exemplified for the purpose of illustrating the embodiments of the present invention, and the embodiments of the present invention may be embodied in various ways and should not be construed as being limited to the embodiments described herein.

Fig. 1 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments. Fig. 2 is an exploded perspective view illustrating the ceiling assembly of fig. 1. Fig. 3 is a sectional view illustrating a portion a of fig. 2. Fig. 4 is a cross-sectional view illustrating a fastening part of the ceiling assembly of fig. 2. Fig. 5 is a cross-sectional view of a portion of a ceiling assembly illustrating some example embodiments.

Referring to fig. 1 to 5, the ceiling module 100 includes a lower ceiling 110 and an upper ceiling 120 fixedly installed at one side of a driver's seat, and the lower ceiling 110 and the upper ceiling 120 are detachably connected to each other.

In some exemplary embodiments, the canopy assembly 100 may include a canopy (not shown) that covers the driver's seat upward. The ceiling module 100 may be installed in an upper body of a construction machine such as a mini excavator.

For example, the upper body may include a main frame (main frame) coupled to an upper portion of the traveling body and a seat base 10(seat base) provided on the main frame. In the case of a construction machine such as an excavator or a wheel loader, the work machine may be rotatably supported by the main frame. The canopy assembly 100 may be disposed adjacent to the seat base 10 to extend upwardly.

Specifically, the lower ceiling 110 may be fixedly provided to the seat base 10, and may include a pair of first and second lower pipes 112a and 112b extending upward. The lower ceiling 110 may further include a lower base 111 secured to a rear end of the seat base. The first lower pipe 112a and the second lower pipe 112b may be lower support columns extending upward from both ends of the lower base 111.

The ceiling module 100 may further include a first reinforcing member 118 and a second reinforcing member 119 for reinforcing rigidity against impact and load, which are fixedly provided to the lower pipe 110 of the upper body.

The first lower pipe 112a and the second lower pipe 112b may extend upward by a predetermined height so that a driver can easily perform work in a narrow space when the first upper pipe 122a and the second upper pipe 122b are separated, which will be described later. A driver seat on which a driver may sit may be provided at the seat base 10, and the driver seat may include a backrest for supporting the back of the driver or a headrest for supporting the head of the driver. The upper end of the backrest or the headrest may correspond to an upper end of a driver seat. The first lower pipe 112a and the second lower pipe 112b may extend upward from the seat base 10 so as to be lower in height than the upper end portion of the driver's seat. As described above, if the lengths of the first lower pipe 112a and the second lower pipe 112b extend upward, the lengths of the first upper pipe 122a and the second upper pipe 122b can be minimized. Thus, as the work becomes easier in a narrow place, the weight of the upper ceiling 120 can be made lighter than when the first upper pipe 122a and the second upper pipes 122b extend to the vicinity of the lower base 111. That is, the work efficiency in a narrow area can be improved, and the upper ceiling 120 can be easily separated.

In some exemplary embodiments, the pair of fastening blocks 130 may be detachably fixed to the first and second lower pipes 112a and 112 b. The fastening block 130 may be inserted into the hollow portions 113 of the first and second lower pipes 112a and 112b, respectively. The fastening block 130 may have a receiving hole 131 formed extending from the upper surface to the inside. The receiving hole 131 may extend in an extending direction (central axis X direction) of the fastening block 130. The receiving hole 131 may be formed to penetrate the fastening block 130. The central axis X of the receiving hole 131 may be located on a concentric circle with the central axes of the first and second lower pipes 112a and 112 b.

The fastening block 130 may include an insertion portion 132 inserted into the hollow portion 113 fixed to each of the first and second lower tubes 112a and 112b, and a head portion 134 extending from the insertion portion 132 to protrude outside the hollow portion 113. The outer diameter W1 of the insertion portion 132 may be smaller than the inner diameter of the hollow portion 113. The outer diameter of the head portion 134 may be larger than the inner diameter of the hollow portion 113.

Insert 132 may have a first length L1 and head 134 may have a second length L2 of 1. Second length L2 of head 134 may be greater than first length L1 of insert 132. That is, the ratio of the first length L1 and the second length L2 may be greater than 1.

The upper ceiling 120 may be detachably fixed to the lower ceiling 110 via a pair of fastening blocks 130. The upper ceiling 120 may include a pair of first and second upper pipes 122a and 122b inserted and fixed into the receiving holes 131 of the fastening blocks 130, respectively. The first upper pipe 122a and the second upper pipe 122b may be detachably fixed to the fastening block 130. The first and second upper pipes 122a and 122b may be upper support columns extending upward from the receiving holes 131 of the fastening block 130.

The first upper pipe 122a and the second upper pipe 122b may be inserted and fixed into the receiving hole 131 of the fastening block 132, and the fastening block 132 may be inserted and fixed into the hollow portions 113 of the first lower pipe 112a and the second lower pipe 112 b. Therefore, the outer diameters of the first and second upper pipes 122a and 122b may be smaller than the outer diameters of the first and second lower pipes 112a and 112 b.

The ratio of the first length L1 of the insertion portion 132 of the fastening block 130 to the second length L2 of the head 134, the ratio of the outer diameters of the first and second lower tubes 112a and 112b to the outer diameters of the first and second upper tubes 122a and 122b, the gap G1 between the first and second upper tubes 122a and 122b and the fastening block 132, and the gap G2 between the first and second lower tubes 112a and 112b and the fastening block 132 may be determined by the difference in diameters of the upper and lower tubes, taking into account the minimization of geometrical (geometric) discontinuity, load supporting force, and the like.

As illustrated in fig. 4, in some exemplary embodiments, the ceiling assembly 100 may further include fastening members that secure the first and second lower tubes 112a and 112b, the fastening blocks 130, and the first and second upper tubes 122a and 122b to each other.

Specifically, the first lower pipe 112a and the second lower pipe 112b may have first fixing holes 115, the fastening block 130 may have second fixing holes 135 communicating with the first fixing holes 115, and the first upper pipe 122a and the second upper pipe 122b may have third fixing holes 125 communicating with the second fixing holes 135, respectively.

The fastening member may include a fixing bolt 140 fastened to the first to third fixing holes 115, 135, 125, and a fixing nut 142 fastened to an end of the fixing bolt 140.

In some exemplary embodiments, the upper ceiling 120 may further include a first connection part 124, and the first connection part 124 extends in a U-shape in a horizontal direction from the first upper pipe 122a and the second upper pipe 122b, respectively. The upper ceiling 120 may further include a second connection member 126, and the second connection member 126 may extend parallel to the first connection member 124 and connect the first upper pipe 122a and the second upper pipe 122 b.

The first and second connection members 124 and 126 may have a substantially quadrangular frame shape. Therefore, a ceiling having a square shape can be attached to and supported by the first connecting member 124 and the second connecting member 126.

As described above, the upper ceiling 120 may be detachably fixed to the lower ceiling 110 via the fastening block 130. The end portions of the first upper pipe 122a and the second upper pipe 122b of the upper ceiling 120 may be inserted into the first lower pipe 112a and the second lower pipe 112b fixed to the lower ceiling 110 by the fastening block 130.

Further, the head 134 of the fastening block 130 may be formed with an outer circumferential surface inclined. The outer diameter of the head 134 may be larger toward the lower side along the central axis X. For example, the head 134 may have a frustoconical shape. The upper end of the head 134 may be formed to be close to the outer diameter of the first and second upper tubes 122a and 122b, and the lower end of the head 134 may be formed to be close to the outer diameter of the first and second lower tubes 112a and 112 b. With the head 134 of such a shape, geometrical discontinuity caused by a difference in diameter between the upper and lower tubes is minimized, so that stress concentration can be prevented. That is, the lateral load (shear load) that may be induced by the geometric discontinuity can be dispersed to eliminate the bending deformation caused by the hinge point in the upper pipe.

Further, by minimizing the diameter of the upper pipe, the weight reduction of the upper pipe is achieved, so that a driver can easily separate and assemble the upper pipe from the lower pipe.

In some exemplary embodiments, the ceiling assembly may further include a foreign material infiltration preventing member for preventing external foreign materials such as rainwater from infiltrating to a junction of the upper pipe and the lower pipe.

As illustrated in fig. 5, the foreign material permeation prevention member may include a cover 123 disposed at an upper portion of the fastening block 130. The cap 123 may be integrally formed with the first and second upper pipes 122a and 112 b. The cap 123 may be formed to protrude outward from the first and second upper pipes 122a and 122b at an upper portion of the fastening block 130. The outer diameter of the cap 123 may be greater than the outer diameter of the upper end of the fastening block 130. Accordingly, the cover 123 may cover the upper portions of the coupling portions between the first and second upper pipes 122a and 122b and the fastening block 130. In contrast, the cover may be separately provided to the gap between the fastening block 130 and the first and second upper tubes 122a and 122 b.

Further, the outer diameter of the lower end of the head 134 of the fastening block 130 may be formed to be larger than the outer diameters of the first and second lower tubes 112a and 112 b. Accordingly, the head 134 may cover the coupling portions of the first and second lower tubes 112a and 112b and the fastening block 130. This prevents foreign matter from penetrating into the joint between the first and second lower pipes 112a and 112b and the fastening block 130.

In some exemplary embodiments, as illustrated in fig. 2, a drain hole 114 for draining rainwater, which penetrates into the interior of the lower pipe through the connection portion of the upper pipe and the lower pipe, to the outside may be formed through the bottom surface of the lower ceiling 110. For example, the discharge hole 114 may be formed through the lower end of the lower base 111.

The discharge holes may be formed through the lower ends of the first and second lower pipes 112a and 112 b. For example, when the lower base 111 and the interiors of the first lower pipe 112a and the second lower pipe 112b are not communicated with each other, the lower base may be formed to penetrate the lower ends of the first lower pipe 112a and the second lower pipe 112 b. Fig. 6 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments. Fig. 7 is a perspective view illustrating a portion B of fig. 6. The ceiling module is substantially the same as the ceiling module described with reference to fig. 1 to 4, except that the ceiling module has a structure capable of adjusting the height of the ceiling module. Therefore, the same components will be denoted by the same reference numerals, and repetitive description thereof will be omitted.

Referring to fig. 6 and 7, the first and second upper tubes 122a and 122b of the upper ceiling 120 of the ceiling assembly of some example embodiments may have a plurality of third fixing holes 125a, 125b, 125c, respectively.

The third fixing holes 125a, 125b, 125c may be formed to be spaced apart along the extending direction of each of the first and second upper pipes 122a, 122 b. Each of the third fixing holes 125a, 125b, 125c may communicate with the first fixing hole 115 of each of the first and second lower pipes 112a, 112b and the second fixing hole 135 of the fastening block 130, and be fixed to each other by a fastening member such as a fixing bolt.

The height of the first upper pipe 122a and the second upper pipe 122b may be reduced as the position of the third fixing hole fastened by the fastening member is higher. Conversely, the height of the first upper pipe 122a and the second upper pipe 122b may be increased as the position of the third fixing hole fastened by the fastening member is lowered.

Accordingly, the upper ceiling 120 can be adjusted in height according to the work environment and the size of the operator, and thus can be designed to easily ensure convenience for the user and visibility.

Fig. 8 is an exploded perspective view of a ceiling assembly illustrating some exemplary embodiments. Fig. 9 is a sectional view illustrating a fastening structure of the ceiling assembly of fig. 8. The ceiling module is substantially the same as the ceiling module described with reference to fig. 1 to 4, except for the fastening structure of the upper ceiling and the lower ceiling and the rigidity reinforcing member of the lower ceiling. Therefore, the same components will be denoted by the same reference numerals, and repetitive description thereof will be omitted.

Referring to fig. 8 and 9, the ceiling assembly of some example embodiments may further include a flange portion 150, the flange portion 150 enabling the upper ceiling 120 and the lower ceiling 110 to be separably coupled. The flange part 150 may include a first flange part 151 formed at the lower ends of the first and second upper pipes 122a and 122b and a second flange part 153 formed at the lower ends of the first and second lower pipes 112a and 112 b.

The first flange 151 may have a plate shape surrounding the lower ends of the first and second upper pipes 122a and 122b and extending in a radial direction from the lower ends of the first and second upper pipes 122a and 122 b. The second flange portion 152 may have a plate shape surrounding the lower ends of the first and second lower pipes 112a and 112b and extending in the radial direction from the lower ends of the first and second lower pipes 112a and 112 b.

The first flange 151 and the second flange 153 support the upper ceiling 120 and the lower ceiling 110 in contact with each other when the upper ceiling 120 and the lower ceiling 110 are coupled, thereby facilitating the transmission of load between the upper ceiling 120 and the lower ceiling 110. To enhance such a load transfer effect, the first flange portion 151 and the second flange portion 153 may have shapes corresponding to each other.

The first flange 151 may have a first through hole 151a, and the second flange 153 may have a second through hole 153 a. The first through-hole 151a and the second through-hole 153a communicate with each other when the upper ceiling 120 and the lower ceiling 110 are coupled, so that a fastening member such as a bolt 160 and a nut 162 can be coupled. By such coupling of the first flange portion 151 and the second flange portion 153, the upper ceiling 120 and the lower ceiling 110 can be coupled to be separable from each other.

In this case, the first and second upper tubes 122a and 122b may have a smaller diameter than the first and second lower tubes 112a and 112 b. This can minimize the weight of the upper ceiling 120.

In some exemplary embodiments, the lower ceiling 110 may further include a third rigidity-enhancing component 117. The third rigid reinforcing member 117 may be provided at a position spaced apart from the lower end of the lower ceiling 110 by a predetermined height to connect and support substantially the center portions of the first lower pipe 112a and the second lower pipe 112 b. The third rigidity reinforcing member 117 can also increase the rigidity against lateral loads in the coupling structure of the flanged upper ceiling 120 and the lower ceiling 110.

Fig. 10 is a cross-sectional view illustrating a fastening structure of a ceiling assembly of some exemplary embodiments. The ceiling module is substantially the same as the ceiling module described with reference to fig. 8 and 9, except for the reinforcement of the upper ceiling. Therefore, the same components will be denoted by the same reference numerals, and repetitive description thereof will be omitted.

Referring to fig. 10, when the upper ceiling 120 is coupled to the lower ceiling 110, the first upper pipe 122a and the second upper pipe 122b of the upper ceiling 120 may further include an insertion extension part 127 inserted and fixed into the hollow part 113 of the first lower pipe 112a and the second lower pipe 112 b.

The insertion extension 127 may be formed extending from each of the lower ends of the first and second upper tubes 122a and 112 b. The insertion extension part 127 may be inserted into the hollow part 113 of each of the first and second lower pipes 112a and 112b while extending downward from the first flange part 151. The insertion extension 127 may contact an inner face of the hollow portion 113 supporting each of the first and second lower tubes 112a and 112 b. The insertion extension 127 may perform the function of a reinforcing member capable of improving rigidity against lateral loads.

Although the present invention has been described with reference to some embodiments thereof, it will be understood by those skilled in the art that the present invention may be variously modified and changed without changing the spirit and scope of the present invention described in the claims.

Claims (6)

1. A canopy assembly, comprising:

a lower ceiling which is fixedly provided on one side of a driver's seat and has a pair of first and second lower pipes extending upward;

an upper ceiling including a pair of first and second upper pipes connected to the first and second lower pipes, and supporting a ceiling at upper ends of the first and second upper pipes;

a first flange portion provided at a lower end of each of the first and second upper pipes, and having a cross-sectional area larger than diameters of the first and second upper pipes; and

and a second flange portion provided at an upper end of each of the first and second lower pipes, having a cross-sectional area larger than diameters of the first and second lower pipes, and detachably coupled to the first flange portion by a fastening member.

2. The canopy assembly of claim 1,

the first lower pipe and the second lower pipe extend to be lower in height than the driver seat.

3. The canopy assembly of claim 1,

the first flange portion and the second flange portion corresponding to each other have the same shape as each other.

4. The canopy assembly of claim 1,

the first and second upper tubes have diameters smaller than the first and second lower tubes.

5. The canopy assembly of claim 4, further comprising:

and a rigidity reinforcing member provided at a position spaced apart from a lower end of the lower ceiling by a predetermined height, the rigidity reinforcing member supporting the first lower pipe and the second lower pipe at both ends.

6. The canopy assembly of claim 1,

the upper ceiling further includes an insertion extension portion extending from a lower end of each of the first and second upper tubes and inserted into the hollow portion of each of the first and second lower tubes.