CN214169230U

CN214169230U - Small excavator

Info

Publication number: CN214169230U
Application number: CN202023140682.6U
Authority: CN
Inventors: 刘立国; 李强
Original assignee: Qinghai Communications Technical College
Current assignee: Qinghai Communications Technical College
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-10
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to the technical field of excavators, in particular to a mini excavator, which comprises a supporting base, an excavator driving arm component, a first hydraulic telescopic rod, a damping device and a second hydraulic telescopic rod, wherein sliders are arranged around the inner side wall of the supporting base, a lifting platform is arranged at the top of the supporting base, chutes are arranged around the outer side wall of the lifting platform, the damping device is arranged between the inner bottom end of the supporting base and the inner top end of the lifting platform, the damping device consists of a sleeve, a lower mounting plate, a telescopic sleeve rod, an upper mounting plate and a damping spring, the bottom of the sleeve is fixedly connected with the lower mounting plate, the top of the sleeve is provided with the telescopic sleeve rod, the top of the telescopic sleeve rod is fixedly connected with the upper mounting plate, the damping spring is arranged outside the sleeve and the telescopic sleeve rod and between the lower mounting plate and the upper mounting plate, and the whole device improves the stability of the excavator during working, improves the comfort of operators, has higher practicability and certain popularization value.

Description

Small excavator

Technical Field

The utility model relates to an excavator technical field specifically is a mini excavator.

Background

An excavator, also called a digger, is an earth moving machine that uses a bucket to dig materials above or below a bearing surface and loads the materials into a transport vehicle or discharges the materials to a stockyard, the materials excavated by the excavator mainly include soil, coal, silt, soil and rock after pre-loosening, and the development of the excavator is relatively fast in recent years, the excavator becomes one of the most important engineering machines in engineering construction, and the excavator can be divided into a large excavator, a medium excavator and a small excavator according to the difference of scale and size, wherein the small excavator is small in size and is suitable for use in a narrow construction environment.

The existing mini excavator is easy to overturn due to unstable gravity center when in work due to small scale, the working environment terrain of the excavator is complex, and when the excavator runs on a bumpy road surface, operators in a control room can feel obvious vibration, so that waist soreness and back pain are caused, fatigue is aggravated, and therefore the problem needs to be improved by the mini excavator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mini excavator to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a small excavator comprises a supporting base, an excavator driving arm assembly, a first hydraulic telescopic rod, a damping device and a second hydraulic telescopic rod, wherein a sliding block is arranged on the periphery of the inner side wall of the supporting base, a lifting table is arranged at the top of the supporting base, sliding grooves are formed in the periphery of the outer side wall of the lifting table, the damping device is arranged between the inner bottom end of the supporting base and the inner top end of the lifting table and consists of a sleeve, a lower mounting plate, a telescopic sleeve rod, an upper mounting plate and a damping spring, the bottom of the sleeve is fixedly connected with the lower mounting plate, the top of the sleeve is provided with the telescopic sleeve rod, the top of the telescopic sleeve rod is fixedly connected with the upper mounting plate, the damping spring is arranged on the outer sides of the sleeve and the telescopic sleeve rod and between the lower mounting plate and the upper mounting plate, an excavator body is arranged at the top of the lifting table, a control chamber is arranged on one side of the top of the excavator body, excavator fuselage top opposite side is equipped with the chimney, excavator fuselage one side is equipped with excavator drive arm assembly, the one end that excavator drive arm assembly kept away from the excavator fuselage is equipped with the bucket, the both sides of supporting base bottom front end and rear end all are equipped with the walking wheel, it is equipped with four first connecting seats that are matrix distribution to support the base bottom, be connected with first hydraulic telescoping rod on the first connecting seat, supporting baseplate is installed to first hydraulic telescoping rod bottom, first hydraulic telescoping rod's inboard is equipped with the second connecting seat, be connected with second hydraulic telescoping rod on the second connecting seat, the one end that second connecting seat was kept away from to second hydraulic telescoping rod is connected through the third connecting seat bottom the support base.

Preferably, the cross sectional area of the outer side of the lifting platform is smaller than the cross sectional area of the inner part of the supporting base, and the supporting base is in sliding connection with the lifting platform through a sliding block and a sliding groove.

Preferably, the shock-absorbing devices are equidistantly provided with a plurality of groups, the bottom ends of the telescopic sleeve rods are inserted into the sleeves and are in sliding connection with the sleeves, and the lower mounting plate is fixedly connected with the supporting base and the upper mounting plate are fixedly connected with the lifting platform through bolts.

Preferably, the first connecting seat is connected with the supporting base in a welding mode, and the top end of the first hydraulic telescopic rod is connected with the first connecting seat in a rotating mode through a pin shaft.

Preferably, the second connecting seat and the first hydraulic telescopic rod and the third connecting seat and the supporting base are all connected through welding, and two ends of the second hydraulic telescopic rod are respectively connected with the second connecting seat and the third connecting seat through pin shafts in a rotating mode.

Preferably, the bottom of the supporting bottom plate is uniformly provided with a plurality of groups of ground grabbing toothed joints.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, through the arrangement of the first hydraulic telescopic rod, the supporting bottom plate and the second hydraulic telescopic rod, the top end of the first hydraulic telescopic rod is rotationally connected with the first connecting seat through a pin shaft, and the two ends of the second hydraulic telescopic rod are respectively rotationally connected with the second connecting seat and the third connecting seat through a pin shaft, when in use, the second hydraulic telescopic rod is driven to extend to drive the first hydraulic telescopic rod to be in a vertical state, then the first hydraulic telescopic rod is driven to extend to enable the supporting bottom plate to be contacted with the ground, the contact area with the ground is increased through the supporting bottom plate, a plurality of groups of ground gripping teeth are uniformly arranged through the bottom of the supporting bottom plate, the excavator has better ground gripping force, the stability during the operation of the excavator is improved, the overturning caused by unstable gravity center is avoided, when the excavator is not in use, the first hydraulic telescopic rod is contracted to drive the supporting bottom plate to be away from the ground, the contraction of the second hydraulic telescopic rod enables the first hydraulic telescopic rod to be folded and placed at the bottom of the supporting base, the occupied area is small, and the small and convenient advantages of the mini excavator are not affected.

2. The utility model discloses in, through the support base that sets up, elevating platform and damping device, support the base and pass through slider and spout sliding connection with the elevating platform, when the road surface of jolting goes, the elevating platform moves down in supporting the base to oppress damping device, make mounting panel and flexible loop bar along with the downward movement extrusion damping spring, shock when relaxing jolting is absorbed through damping spring's elastic action, reduce the vibrations sense that transmits the control room, improve operating personnel's travelling comfort, the practicality is higher.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the support base and the elevating platform of the present invention;

FIG. 3 is a schematic structural view of the damping device of the present invention;

fig. 4 is the structure schematic diagram of the contraction state of the first hydraulic telescopic rod and the second hydraulic telescopic rod of the present invention.

In the figure: 1. a support base; 2. a lifting platform; 3. an excavator body; 4. a smoke exhaust tube; 5. a control room; 6. an excavator drive arm assembly; 7. excavating a bucket; 8. a traveling wheel; 9. a first connecting seat; 10. a first hydraulic telescopic rod; 11. a damping device; 1101. a sleeve; 1102. a lower mounting plate; 1103. a telescopic loop bar; 1104. an upper mounting plate; 1105. a damping spring; 12. a slider; 13. a chute; 14. a support base plate; 15. a second connecting seat; 16. a second hydraulic telescopic rod; 17. a third connecting seat.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a mini excavator comprises a supporting base 1, an excavator driving arm assembly 6, a first hydraulic telescopic rod 10, a shock absorption device 11 and a second hydraulic telescopic rod 16, wherein sliders 12 are arranged on the periphery of the inner side wall of the supporting base 1, a lifting platform 2 is arranged on the top of the supporting base 1, sliding grooves 13 are arranged on the periphery of the outer side wall of the lifting platform 2, the outer cross sectional area of the lifting platform 2 is smaller than the inner cross sectional area of the supporting base 1, the supporting base 1 and the lifting platform 2 are connected in a sliding mode through the sliders 12 and the sliding grooves 13, the shock absorption device 11 is arranged between the inner bottom end of the supporting base 1 and the inner top end of the lifting platform 2, a plurality of groups of shock absorption devices 11 are arranged at equal intervals, each shock absorption device 11 comprises a sleeve 1101, a lower mounting plate 1102, a telescopic sleeve 1103, an upper mounting plate 1104 and a shock absorption spring 1105, the bottom of the sleeve 1101 is fixedly connected with the lower mounting plate 1102, and the top of the sleeve 1101 is provided with the telescopic sleeve 1103, an upper mounting plate 1104 is fixedly connected to the top of the telescopic sleeve 1103, a damping spring 1105 is arranged between the lower mounting plate 1102 and the upper mounting plate 1104 and outside the sleeve 1101 and the telescopic sleeve 1103, the bottom end of the telescopic sleeve 1103 is inserted inside the sleeve 1101, the telescopic sleeve 1103 is connected with the sleeve 1101 in a sliding manner, the lower mounting plate 1102 is fixedly connected with the supporting base 1 and the upper mounting plate 1104 are fixedly connected with the lifting platform 2 through bolts, the top of the lifting platform 2 is provided with an excavator body 3, one side of the top of the excavator body 3 is provided with a control chamber 5, the other side of the top of the excavator body 3 is provided with a smoke exhaust tube 4, one side of the excavator body 3 is provided with an excavator driving arm assembly 6, one end of the excavator driving arm assembly 6, far away from the excavator body 3 is provided with an excavator bucket 7, two sides of the front end and the rear end of the bottom of the supporting base 1 are provided with traveling wheels 8, the bottom of the supporting base 1 is provided with four first connecting seats 9 distributed in a matrix manner, be connected with first hydraulic telescoping rod 10 on the first connecting seat 9, first connecting seat 9 with support base 1 welded connection, the top and the first connecting seat 9 of first hydraulic telescoping rod 10 rotate through the round pin axle and be connected, supporting baseplate 14 is installed to first hydraulic telescoping rod 10 bottom, supporting baseplate 14's bottom evenly is equipped with the multiunit and grabs the ground tooth, the inboard of first hydraulic telescoping rod 10 is equipped with second connecting seat 15, be connected with second hydraulic telescoping rod 16 on the second connecting seat 15, second connecting seat 15 was kept away from to second hydraulic telescoping rod 16 one end is connected through third connecting seat 17 bottom with support base 1, second connecting seat 15 all passes through welded connection with first hydraulic telescoping rod 10 and third connecting seat 17 with support base 1, the both ends of second hydraulic telescoping rod 16 rotate through the round pin axle with second connecting seat 15 and third connecting seat 17 respectively and be connected.

The utility model discloses work flow: when the excavator is used, the top end of the first hydraulic telescopic rod 10 is rotationally connected with the first connecting seat 9 through a pin shaft, the two ends of the second hydraulic telescopic rod 16 are rotationally connected with the second connecting seat 15 and the third connecting seat 17 through pin shafts respectively, the second hydraulic telescopic rod 16 is driven to extend to drive the first hydraulic telescopic rod 10 to be in a vertical state, then the first hydraulic telescopic rod 10 is driven to extend to enable the supporting bottom plate 14 to be in contact with the ground, the contact area with the ground is increased through the supporting bottom plate 14, a plurality of groups of ground grabbing teeth are uniformly arranged at the bottom of the supporting bottom plate 14, the excavator has better ground grabbing force, the stability during operation of the excavator is improved, the overturning caused by unstable gravity center is avoided, when the excavator is not used, the first hydraulic telescopic rod 10 is contracted to drive the supporting bottom plate 14 to be away from the ground, the second hydraulic telescopic rod 16 is contracted to enable the first hydraulic telescopic rod 10 to be folded and placed at the bottom of the supporting base 1, the occupied area is small, do not influence the small and exquisite convenient advantage of mini excavator, it is whole effectual, and stability and practicality are higher, pass through slider 12 and spout 13 sliding connection through supporting base 1 and elevating platform 2, when jolting the road surface and traveling, elevating platform 2 moves down in supporting base 1, thereby oppression damping device 11, make mounting panel 1104 and flexible loop bar 1103 extrude damping spring 1105 along with the lapse, the elasticity effect through damping spring 1105 absorbs the vibrations when mitigateing jolting, reduce the vibrations sense that transmits control room 5, the integrated device improves the stability of excavator during operation, improve operating personnel's travelling comfort, the practicality is higher, certain spreading value has.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small excavator, includes support base (1), excavator drive arm subassembly (6), first hydraulic telescoping rod (10), damping device (11) and second hydraulic telescoping rod (16), its characterized in that: the shock absorption device is characterized in that sliders (12) are arranged on the periphery of the inner side wall of the supporting base (1), a lifting table (2) is arranged on the top of the supporting base (1), sliding grooves (13) are formed in the periphery of the outer side wall of the lifting table (2), a shock absorption device (11) is arranged between the bottom end of the interior of the supporting base (1) and the top end of the interior of the lifting table (2), the shock absorption device (11) is composed of a sleeve (1101), a lower mounting plate (1102), a telescopic loop bar (1103), an upper mounting plate (1104) and a shock absorption spring (1105), the bottom of the sleeve (1101) is fixedly connected with the lower mounting plate (1102), the top of the sleeve (1101) is provided with the telescopic loop bar (1103), the top of the telescopic loop bar (1103) is fixedly connected with the upper mounting plate (1104), the outer sides of the sleeve (1101) and the telescopic loop bar (1103) are positioned between the lower mounting plate (1102) and the upper mounting plate (1104), an excavator body (3) is installed at the top of the lifting platform (2), a control room (5) is arranged on one side of the top of the excavator body (3), a smoke exhaust pipe (4) is arranged on the other side of the top of the excavator body (3), an excavator driving arm assembly (6) is arranged on one side of the excavator body (3), an excavator bucket (7) is arranged at one end, away from the excavator body (3), of the excavator driving arm assembly (6), walking wheels (8) are arranged on the two sides of the front end and the rear end of the bottom of the supporting base (1), four first connecting seats (9) distributed in a matrix mode are arranged at the bottom of the supporting base (1), a first hydraulic telescopic rod (10) is connected onto each first connecting seat (9), a supporting bottom plate (14) is installed at the bottom of the first hydraulic telescopic rod (10), and a second connecting seat (15) is arranged on the inner side of the first hydraulic telescopic rod (10), and a second hydraulic telescopic rod (16) is connected to the second connecting seat (15), and one end, far away from the second connecting seat (15), of the second hydraulic telescopic rod (16) is connected with the bottom of the supporting base (1) through a third connecting seat (17).

2. A miniexcavator according to claim 1 wherein: the cross sectional area of the outer side of the lifting platform (2) is smaller than the cross sectional area of the inner part of the supporting base (1), and the supporting base (1) is in sliding connection with the lifting platform (2) through a sliding block (12) and a sliding groove (13).

3. A miniexcavator according to claim 1 wherein: the shock absorption device is characterized in that multiple groups of shock absorption devices (11) are arranged at equal intervals, the bottom end of a telescopic loop bar (1103) is inserted into a sleeve (1101), the telescopic loop bar (1103) is in sliding connection with the sleeve (1101), and a lower mounting plate (1102) is fixedly connected with a support base (1) and an upper mounting plate (1104) is fixedly connected with a lifting platform (2) through bolts.

4. A miniexcavator according to claim 1 wherein: the first connecting seat (9) is connected with the supporting base (1) in a welding mode, and the top end of the first hydraulic telescopic rod (10) is connected with the first connecting seat (9) in a rotating mode through a pin shaft.

5. A miniexcavator according to claim 1 wherein: the second connecting seat (15) is connected with the first hydraulic telescopic rod (10) and the third connecting seat (17) is connected with the supporting base (1) in a welding mode, and the two ends of the second hydraulic telescopic rod (16) are respectively connected with the second connecting seat (15) and the third connecting seat (17) in a rotating mode through pin shafts.

6. A miniexcavator according to claim 1 wherein: the bottom of the supporting bottom plate (14) is uniformly provided with a plurality of groups of ground grabbing teeth.