CN218814003U

CN218814003U - Protective support of miniature excavator

Info

Publication number: CN218814003U
Application number: CN202223200725.4U
Authority: CN
Inventors: 陆祖东; 王田辉; 沙肃君
Original assignee: Ningbo Yinzhou Chuangxin Construction Machinery Co ltd
Current assignee: Ningbo Yinzhou Chuangxin Construction Machinery Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-07
Anticipated expiration: 2032-11-30

Abstract

The utility model provides a protective bracket of a miniature excavator, which is used for being installed on an excavator main body and positioned between a seat and an operating arm, and comprises an installation base connected on the excavator main body, wherein the installation base is connected with a lower bracket, the upper end of the lower bracket is connected with an upper bracket, the upper end of the upper bracket is bent towards one side of the seat to form a horizontal protective part, and the width of the protective bracket is greater than that of the seat; the upper support and the lower support can be turned and folded to realize the height adjustment of the protective support. The utility model provides a protective bracket of miniature excavator has not only increased the safety to digging the quick-witted operator and has protected to protection device's height-adjustable conveniently digs quick-witted through narrow and small working channel.

Description

Protective bracket of miniature excavator

Technical Field

The utility model belongs to the technical field of miniature machine of digging and specifically relates to a protective bracket of miniature excavator.

Background

At present, with the limited space of the application scenario, miniature excavators (excavators) with small volume and compact structure are applied more and more, and the miniature excavators generally comprise a crawler type traveling mechanism, a frame is arranged above the miniature excavating machine, a movable arm mechanism, a handle control mechanism and a power assembly are arranged on the frame, and a seat is also generally arranged for an operator to use.

For example, patent CN210562353U discloses a miniature excavator with double speed and compound action, which is not provided with any operator protection device on the frame, especially when the excavator moves in a narrow roadway, if the space of the roadway is not estimated, the risk of collision and scratch between the operator and the roadway wall is easily caused; in addition, the miniature excavator is light in weight and poor in chassis stability, so that the risk of overturning is easy to occur when the miniature excavator walks on a slope, and the potential safety hazard is also caused because no personnel protection device is arranged.

Therefore, the corresponding personnel protection device is very necessary under the conditions that the cost is not increased too much and the operation of the actuator by an operator is not influenced, but the problem of operation space needs to be further considered while the protection device is arranged, so that the inconvenience in passing caused by the fact that the height of the protection device is too high is avoided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem, in order to overcome at least one defect among the prior art, provide a protective bracket of miniature excavator, not only increased and protected to digging quick-witted operator's safety to protection device's height-adjustable conveniently digs quick-witted through narrow and small working channel.

The utility model provides a protective bracket of a miniature excavator, which is used for being installed on an excavator main body and positioned between a seat and an operating arm, and comprises an installation base connected on the excavator main body, wherein the installation base is connected with a lower bracket, the upper end of the lower bracket is connected with an upper bracket, the upper end of the upper bracket is bent towards one side of the seat to form a horizontal protective part, and the width of the protective bracket is greater than that of the seat; the upper support and the lower support can be turned and folded to realize the height adjustment of the protective support.

The utility model discloses a protective bracket of miniature excavator compares with prior art and has following advantage:

the utility model discloses a protective bracket is a special operator protective mechanism for miniature excavator, and the protective mechanism protects two-part structure, namely including the lower bracket connected with the excavator main body, and the upper bracket is arranged on the upper end of the lower bracket, the upper end of the upper bracket is also provided with a part bending towards the seat, the bending part is an integral structure with the upper bracket, and is used for protecting the head top part of the operator to avoid collision; more importantly, the width of the protection mechanism is larger than that of the seat, so that when the excavator passes through a roadway, if the width of the excavator is too narrow, two sides of the protection support are firstly collided with the wall of the roadway, the probability of collision between an operator and the wall of the roadway is reduced, and the effect of protecting the operator is achieved; similarly, once the excavator has a rollover accident, the protection mechanism firstly contacts the ground and can well protect an operator; on the other hand, the upper bracket and the lower bracket can be relatively turned, namely, when the doorway is insufficient in height, the upper bracket is directly turned over and stored without dismantling the protection mechanism, so that the overall height of the protection bracket is reduced, the whole excavator can pass through narrow holes and doorways, and the excavator is very convenient, so that the whole excavator structure can achieve work safety and meet the requirement of space trafficability.

As an improvement, the lower bracket comprises two connecting columns which are vertically arranged, the lower ends of the two connecting columns are respectively connected to two ends of the mounting base, the lower end of the upper bracket is respectively rotatably connected with the upper ends of the two connecting columns, a locking assembly is connected between the upper bracket and the connecting columns, when the locking assembly is in a locking state, the upper bracket is vertically limited at the upper ends of the connecting columns, and when the locking assembly is in an unlocking state, the upper bracket can be overturned towards a direction away from the seat and stored to a set position. In the improved structure, the lower bracket is provided with two connecting columns which are connected with two ends of the mounting base, so that the structure is simple, the assembly and disassembly are convenient, and the cost is low; and realize the upset of upper bracket and prescribe a limit through the locking subassembly, realize the position switching of upper bracket promptly through the operating condition who changes the locking subassembly, convenient operation, safety.

The improved structure is characterized in that the upper support is a door-shaped support, the lower ends of two vertical columns of the door-shaped support are respectively connected with first connecting plates, the lower ends of the two first connecting plates are respectively connected with a hinge shaft which is horizontally arranged, the upper ends of the two connecting columns are respectively connected with hinge seats, and each hinge seat is provided with a hinge hole for the hinge shaft to hinge; and the locking assembly is arranged between the first connecting plate and the hinge seat. Among the above-mentioned improvement structure, the upper bracket comprises door type support to its lower extreme is articulated with the lower carriage, simple structure, simple to operate, and can not influence operator's operation.

Then, the hinge seats are provided with a first limiting hole above the hinge hole, and a positioning pin shaft penetrates through the first limiting hole; and a second limiting hole is formed in each first connecting plate above the hinge shaft, when the door-shaped support rotates to a vertical state, the second limiting hole corresponds to the first limiting hole, and the positioning pin shaft is sequentially inserted into the first limiting hole and the second limiting hole to form the locking assembly. In the above-mentioned improved structure, the rotation locking of upper bracket and lower carriage is realized through the cooperation of corresponding spacing hole and locating pin axle, simple structure, convenient operation, when needs upset are accomodate and are good at the upper bracket, only need extract corresponding locating pin axle can.

In another improvement, each hinge seat comprises two second connecting plates, the two second connecting plates are arranged at intervals to form an assembly groove, and hinge holes and second limiting holes which are vertically distributed are formed in the two second connecting plates; the lower end of each first connecting plate is connected in each corresponding assembling groove in a turnover way towards one side far away from the seat. In the above-mentioned improvement structure, the second connecting plate that two intervals set up forms articulated seat for first connecting plate articulates between two second connecting plates, effectively promotes hinge structure's stability, and can realize that the upper bracket is spacing in the articulated shaft axial.

And when the upper bracket is turned and stored to a set position towards one side far away from the seat, the first connecting plate abuts against the stop block. In the improved structure, the stop block is arranged to limit the position of the upper bracket after being turned, so that the stability of the whole structure is ensured.

And a cross rod is connected between the two connecting columns. In the improved structure, the structural strength of the lower support is further improved by the addition of the cross rod.

And the fixed seat comprises a fixed bottom plate arranged along the left and right directions of the excavator main body, and two ends of the fixed bottom plate are respectively provided with a first connecting part and a second connecting part which are respectively detachably connected with different parts of the excavator main body. In the above-mentioned improvement structure, realize the connection of protective bracket and digging the quick-witted main part through two connecting portions that do not pass through, effectively guarantee joint strength.

And the improved structure is characterized in that a warning lamp is arranged at the top of the upper support, and when the excavator is in an operating state, the warning lamp flashes to remind peripheral personnel of not being close to an operating area. In the above-mentioned improvement structure, the increase of warning light promotes the security performance, prevents that peripheral personnel from missing the operation area and causing the incident.

Drawings

Fig. 1 is a schematic structural view of a protective bracket of a mini excavator according to the present invention;

FIG. 2 is another angle structure diagram of the protection bracket of the micro-excavator in FIG. 1;

fig. 3 is a schematic view of the upper bracket turning and accommodating state of the protective bracket of the mini excavator in the present invention.

Description of reference numerals:

1. installing a base; 1.1, fixing a bottom plate; 1.2, a first connecting part; 1.3, a second connecting part; 2. a lower bracket; 2.1, connecting columns; 2.2, a cross bar; 3. an upper bracket; 4. a horizontal guard portion; 5. a first connecting plate; 6. a hinge hole; 7. a first limit hole; 8. a second limiting hole; 9. a second connecting plate; 10. assembling the groove; 11. a stop block; 12. a warning light; 13. a handle.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper end", "lower end", etc. are the directions or positional relationships shown on the basis of the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the utility model provides a protective bracket of miniature excavator for install in digging the quick-witted main part and be located the position between seat and the action arm and realize the operation safety protection effect, it is including connecting the installation base 1 in digging the quick-witted main part, it is concrete, this installation base 1 includes a PMKD 1.1 along digging the quick-witted main part left and right sides direction setting, both ends at PMKD 1.1 are provided with first connecting portion 1.2 and second connecting portion 1.3 respectively, and corresponding connecting hole has been seted up respectively on first connecting portion 1.2 and second connecting portion 1.3, realize can dismantling with the different positions of digging the quick-witted main part through connecting screw and be connected, easy dismounting, and connection structure is stable.

In addition, a lower bracket 2 is connected to the mounting base 1, an upper bracket 3 is connected to the upper end of the lower bracket 2, the upper end of the upper bracket 3 is bent towards one side of the seat to form a horizontal protection part 4, and the width of the whole protection bracket in the structure is larger than that of the seat, so that when the excavator passes through a roadway, if the width of the excavator is too narrow, two sides of the protection bracket firstly collide with the roadway wall, the probability of collision between an operator and the roadway wall is reduced, and the effect of protecting the operator is achieved; similarly, once the excavator has a rollover accident, the protection mechanism firstly contacts the ground and can well protect an operator.

On the other hand, in the embodiment, the upper bracket 3 and the lower bracket 2 can be turned and folded to realize the height adjustment of the protective bracket; when the doorway through the height dimension is not enough, need not to demolish protection machanism promptly, directly overturn upper bracket 3 and accomodate to reduce protection support's whole height, can make whole machine of digging through narrow and small hole, doorway, it is very convenient, thereby make whole machine structure of digging can reach work safety, can satisfy the requirement of space trafficability characteristic again.

In this embodiment, the lower support 2 includes two vertical spliced poles 2.1 that set up, and the lower extreme of two spliced poles 2.1 is connected respectively at the both ends of PMKD 1.1 to the lower extreme of upper bracket 3 rotates with the upper end of two spliced poles 2.1 respectively to be connected, and preferred for spliced pole 2.1 is steel tube structure in this structure. And in order to improve structural strength, be connected with a horizontal pole 2.2 between two spliced poles 2.1, the both ends of horizontal pole 2.2 respectively with two spliced poles 2.1 welded fastening. A locking assembly is connected between the upper bracket 3 and the connecting column 2.1, when the locking assembly is in a locking state, the upper bracket 3 is vertically limited at the upper end of the connecting column 2.1, and the protective bracket is in a working state; when the locking assembly is in the unlocked state, the upper bracket 3 can be turned and stored to a set position in a direction away from the seat, as shown in fig. 3, so that the excavator can conveniently pass through a doorway or a hole opening with a lower height.

Preferably, the upper bracket 3 in this embodiment is a door-shaped bracket, and the door-shaped bracket is formed by bending and molding a complete steel pipe; the integral structure has high strength, does not need welding and assembling, saves the installation process and has more beautiful appearance; in addition, the lower ends of the two upright posts of the door-shaped bracket are respectively connected with first connecting plates 5, the lower ends of the two first connecting plates 5 are respectively connected with a horizontally arranged hinge shaft (not shown in the figure), the upper ends of the two connecting posts 2.1 are respectively connected with hinge seats, and the two hinge seats are respectively provided with hinge holes 6 for hinging the corresponding hinge shafts; and the locking subassembly also is two, and two locking subassemblies set up respectively between each first connecting plate 5 and the articulated seat that corresponds, realize that upper bracket 3 and spliced pole 2.1's vertical location or upset are accomodate. And in order to guarantee the strength of the whole protective bracket, when the upper bracket 3 is in a vertical state, the tops of the two connecting columns 2.1 are abutted against the lower end faces of the two upright columns of the door-shaped bracket, as shown in fig. 2, and at the moment, the locking assembly is in a locking state.

More specifically, in the above structure, a first limiting hole 7 is provided on each hinge seat directly above the hinge hole 6, and a positioning pin (not shown in the drawings) is inserted into the first limiting hole 7; a second limiting hole 8 is formed in each first connecting plate 5 and is positioned right above the hinge shaft, when the door-shaped support rotates to be in a vertical state, the second limiting hole 8 corresponds to the first limiting hole 7, and the positioning pin shafts are sequentially inserted into the first limiting hole 7 and the second limiting hole 8 to form a locking assembly, namely, the upper support 3 and the lower support 2 are limited through the positioning pin shafts; when upper bracket 3 need overturn and accomodate, as long as extract the locating pin axle on two articulated seats respectively, after losing the locking effect of locating pin axle, can overturn round the articulated shaft between upper bracket 3 and the lower carriage 2.

In this embodiment, preferably, each hinge seat includes two second connecting plates 9, the two second connecting plates 9 are arranged at intervals to form an assembling groove 10, and hinge holes 6 and second limiting holes 8 which are vertically distributed are formed in the two second connecting plates 9; the lower ends of the two first connecting plates 5 are respectively connected in the corresponding fitting grooves 10 in a reversible manner toward the side away from the seat.

In addition, in order to realize the position limitation after the upper bracket 3 is turned and stored, a stop block 11 is arranged at the upper end of at least one connecting column 2.1 and below the hinge seat in the structure, namely when the upper bracket 3 is turned and stored to a set position towards the side far away from the seat, the first connecting plate 5 abuts against the stop block 11.

In this embodiment, be provided with warning light 12 at the top of upper bracket 3, when digging the machine and be in operating condition, warning light 12 explodes and dodges and is used for reminding peripheral personnel not to be close to the operating area, guarantees personnel's safety, avoids taking place the incident.

In addition, in the above structure of the embodiment, the handles 13 are further respectively disposed at the lower ends of the two pillars of the gantry support and at the sides corresponding to the first connecting plate 5, so as to facilitate the turning operation of the upper support 3.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present disclosure.

Claims

1. The utility model provides a protective bracket of miniature excavator for install on the excavator main part and be located the position between seat and the operation arm, its characterized in that: the excavator comprises a mounting base (1) connected to an excavator main body, wherein a lower support (2) is connected to the mounting base (1), an upper support (3) is connected to the upper end of the lower support (2), the upper end of the upper support (3) is bent towards one side of a seat to form a horizontal protection part (4), and the width of the protection support is greater than that of the seat; the upper support (3) and the lower support (2) can be folded in a turnover mode to achieve height adjustment of the protective support.

2. The shield bracket of a micro-excavator according to claim 1, wherein: lower carriage (2) include spliced pole (2.1) of two vertical settings, two the lower extreme of spliced pole (2.1) is connected respectively the both ends of installation base (1), the lower extreme of upper bracket (3) respectively with two the upper end of spliced pole (2.1) is rotated and is connected, just upper bracket (3) with be connected with the locking subassembly between spliced pole (2.1), work as when the locking subassembly is located the lock state, upper bracket (3) along vertical spacing in the upper end of spliced pole (2.1), work as when the locking subassembly is located the unblock state, upper bracket (3) can be towards keeping away from the direction upset of seat is accomodate to setting for the position.

3. The shield bracket for a micro-excavator according to claim 2, wherein: the upper support (3) is a door-shaped support, the lower ends of two vertical columns of the door-shaped support are respectively connected with first connecting plates (5), the lower ends of the two first connecting plates (5) are respectively connected with horizontally arranged hinge shafts, the upper ends of the two connecting columns (2.1) are respectively connected with hinge seats, and each hinge seat is provided with a hinge hole (6) for the hinge shaft to hinge; and the locking assembly is arranged between the first connecting plate (5) and the hinge seat.

4. The shield bracket for a micro-excavator according to claim 3, wherein: a first limiting hole (7) is formed in each hinge seat above the hinge hole (6), and a positioning pin shaft penetrates through the first limiting hole (7); and a second limiting hole (8) is formed in each first connecting plate (5) above the hinge shaft, when the door-shaped support rotates to a vertical state, the second limiting hole (8) corresponds to the first limiting hole (7), and the positioning pin shaft is sequentially inserted into the first limiting hole (7) and the second limiting hole (8) to form the locking assembly.

5. The shield bracket for a micro-excavator according to claim 4, wherein: each hinge seat comprises two second connecting plates (9), the two second connecting plates (9) are arranged at intervals to form an assembling groove (10), and hinge holes (6) and second limiting holes (8) which are vertically distributed are formed in the two second connecting plates (9); the lower ends of the first connecting plates (5) are respectively connected in corresponding assembling grooves (10) in a turnover mode towards the side far away from the seat.

6. The shield bracket of a micro-excavator according to claim 3, wherein: the upper end of at least one connecting column (2.1) is arranged below the hinged seat and is provided with a stop block (11), and when the upper bracket (3) is turned towards one side far away from the seat and is stored to a set position, the first connecting plate (5) is abutted against the stop block (11).

7. The shield bracket of a micro-excavator according to any one of claims 2 to 6, wherein: a cross rod (2.2) is connected between the two connecting columns (2.1).

8. The shield bracket for a micro-excavator according to claim 7, wherein: the mounting base (1) comprises a fixed bottom plate arranged along the left and right directions of the excavator main body, and the two ends of the fixed bottom plate are respectively provided with a first connecting part (1.2) and a second connecting part (1.3) which are respectively detachably connected with different parts of the excavator main body.

9. The shield bracket for a micro-excavator according to claim 1, wherein: the top of upper bracket (3) is provided with warning light (12), works as when digging the machine and being in operating condition, warning light (12) explode and dodge and be used for reminding peripheral personnel not to be close to the operating area.