CN209739036U

CN209739036U - Mechanical support leg for engineering machinery

Info

Publication number: CN209739036U
Application number: CN201920595300.7U
Authority: CN
Inventors: 刘健昆
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2019-12-06
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a mechanical landing leg for engineering machinery, which comprises a landing leg table board, a landing leg, a lifting device, a sleeve, a support rod, a rotating groove and a support rod, wherein the lifting device is arranged in the landing leg and comprises a screw rod, a driving motor, a rotating shaft I, a driving bevel gear and a driven bevel gear, a groove I with a downward opening is arranged in the landing leg, a groove II is arranged at the closed end of the groove I, the upper end of the screw rod is arranged in the groove II, the driven bevel gear is arranged at the upper part of the screw rod, the driving bevel gear is meshed at the outer side of the driven bevel gear and is connected with the driving motor through the rotating shaft I, a screw sleeve is arranged at the lower end of the screw rod, the sleeve is arranged at the lower end of the screw sleeve, the support rod is arranged in a sliding fit manner at the lower end, the periphery of the sliding rod is provided with a sliding ring in a sliding way, and the periphery of the sliding ring is correspondingly connected with the support rod through a rotating connecting rod.

Description

Mechanical support leg for engineering machinery

Technical Field

The utility model relates to a mechanical landing leg technical field for the engineering machine tool, concretely relates to mechanical landing leg for engineering machine tool.

Background

Supporting legs are often arranged on engineering machinery such as a concrete pump truck and an automobile crane. When the engineering machinery walks, the supporting legs are retracted; and when the engineering machinery works, the supporting legs are opened to stabilize the center of gravity of the whole vehicle. At present, the engineering machinery supporting legs mostly adopt the following two structural forms: swing type and telescopic type. With the continuous increase of the single machine operation range of the engineering machinery, the length of the supporting leg is required to be larger and larger. Therefore, how to provide a telescopic supporting leg with simple and reliable structure and simple manufacture to meet the increasing performance requirements of engineering machinery for the supporting leg is a technical problem to be solved urgently by those skilled in the art. The prior art has the problems that the telescopic height can not be freely adjusted and the stability is not high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the mechanical support leg for the engineering machinery is provided so as to solve the problems that the height of the existing mechanical support leg cannot be freely adjusted and stretched and is not high in stability in the using process.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a mechanical landing leg for engineering machinery, including landing leg mesa, landing leg, reinforcing plate, elevating gear, sleeve, bracing piece, rotation groove, cradling piece, slide bar, damping spring and motor switch, landing leg fixed connection is at the lower surface of landing leg mesa, be provided with elevating gear in the landing leg, elevating gear includes screw rod, driving motor, pivot one, drive bevel gear and driven bevel gear, the landing leg is inside to be provided with recess one that the opening is down, the blind end of recess one is provided with recess two, the upper end of screw rod sets up in recess two, the upper portion of screw rod is provided with driven bevel gear, the outside meshing of driven bevel gear has drive bevel gear, drive bevel gear through pivot one with driving motor is connected, the lower extreme of screw rod is provided with the swivel nut, the lower extreme of swivel nut is provided with the sleeve, the telescopic lower extreme slip is agreed and is provided with the bracing piece, the peripheral lower part embedding of bracing piece is provided with rotates the groove, it has the cradling piece to rotate the turn joint in the groove, the lower extreme middle part of bracing piece is provided with the slide bar perpendicularly, the bottom of slide bar is provided with the gasket, the peripheral slip of slide bar is provided with the slip ring, the slip ring periphery with the cradling piece corresponds and is connected with the rotation connecting rod, the rotation connecting rod comprises metal pole and pipe box through spring coupling, the metal pole end of rotation connecting rod with the relative inboard middle part of cradling piece is rotated through articulated mode and is connected, the pipe box end of rotation connecting rod with slip ring welded fastening, one side of landing leg mesa is provided with motor switch, motor switch with driving motor electric connection.

Furthermore, a plurality of reinforcing plates are fixedly arranged between the supporting legs.

Further, a bearing is arranged at the contact position of the screw and the second groove.

Furthermore, the upper end of the supporting rod is connected with the top of the inner wall of the sleeve through a damping spring.

Furthermore, the rotating groove is embedded and distributed in a cross shape, and a pair of symmetrical metal plates are welded in the rotating groove.

Furthermore, the upper end of the support rod is rotatably connected with the metal plate in the rotating groove through a second rotating shaft, and a torsion spring is connected between the support rod and the rotating groove.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1) The driving motor is started through the motor switch, the driving motor drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the screw rod to rotate, and then the screw rod and the screw sleeve rotate relatively, so that the height of the table top of the supporting leg is adjusted, and the purpose of adjusting different heights of the supporting leg is achieved.

2) The staff puts the engineering machine tool of different weight on the landing leg mesa, if put the engineering machine tool that weight is heavier on the landing leg mesa, the peripheral cradling piece of sleeve rotates outwards relatively in rotating the groove, thereby the slip ring passes through the slide bar and upwards slides and stretch two parts of rotating the connecting rod, thereby the cradling piece lower extreme has enlarged the support range, the stability of this mechanical landing leg has been improved, simultaneously damping spring on the bracing piece, the torsion spring of connecting between cradling piece end and the rotation groove and the spring design in the rotation connecting rod can both provide effectual cushioning effect in the outrigger, the stability of this mechanical landing leg has been strengthened.

drawings

Fig. 1 is a schematic structural view of a mechanical leg of the present invention;

Fig. 2 is a schematic structural view of the lifting device of the present invention;

FIG. 3 is a schematic view of the connection between the sleeve and the support rod according to the present invention;

In the figure: the support leg comprises a support leg table top 1, support legs 2, a reinforcing plate 3, a lifting device 4, a sleeve 5, a support rod 6, a rotating groove 7, a support rod 8, a sliding rod 9, a damping spring 10, a screw rod 11, a driving motor 12, a rotating shaft I13, a driving bevel gear 14, a driven bevel gear 15, a groove I16, a groove II 17, a threaded sleeve 18, a sliding ring 19, a rotating connecting rod 20 and a bearing 21.

Detailed Description

in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, a mechanical leg for engineering machinery, comprising a leg table top 1, a leg 2, a reinforcing plate 3, a lifting device 4, a sleeve 5, a support rod 6, a rotation groove 7, a support rod 8, a slide rod 9, a damping spring 10 and a motor switch, wherein the leg 2 is fixedly connected to the lower surface of the leg table top 1, the lifting device 4 is arranged in the leg 2, the lifting device 4 comprises a screw 11, a driving motor 12, a first rotation shaft 13, a first driving bevel gear 14 and a driven bevel gear 15, a first groove 16 with a downward opening is arranged in the leg 2, a second groove 17 is arranged at the closed end of the first groove 16, the upper end of the screw 11 is arranged in the second groove 17, the driven bevel gear 15 is arranged at the upper part of the screw 11, the driving bevel gear 14 is engaged with the outer side of the driven bevel gear 15, and the driving bevel gear 14 is connected with, the lower end of the screw rod 11 is provided with a threaded sleeve 18, the lower end of the threaded sleeve 18 is provided with a sleeve 5, the lower end of the sleeve 5 is slidably fitted with a support rod 6, the peripheral lower part of the support rod 6 is embedded with a rotating groove 7, the rotating groove 7 is rotatably connected with a support rod 8, the middle part of the lower end of the support rod 6 is vertically provided with a slide rod 9, the bottom of the slide rod 9 is provided with a gasket, the periphery of the slide rod 9 is slidably provided with a slide ring 19, the periphery of the slide ring 19 is correspondingly connected with a rotating connecting rod 20 with the support rod 8, the rotating connecting rod 20 is composed of a metal rod and a pipe sleeve which are connected through a spring, the tail end of the metal rod of the rotating connecting rod 20 is rotatably connected with the middle part of the inner side, opposite to the support rod 8, the pipe sleeve tail end of the rotating connecting rod 20 is welded, the motor switch is electrically connected to the driving motor 12.

Furthermore, a plurality of reinforcing plates 3 are fixedly arranged between the supporting legs 2; the provision of the reinforcing plate 3 makes the support of the leg 2 more stable.

Further, a bearing 21 is arranged at the contact position of the screw rod 11 and the second groove 17.

Further, the upper end of the support rod 6 is connected with the top of the inner wall of the sleeve 5 through a damping spring 10; the arrangement of the damping spring 10 provides good damping.

Furthermore, the rotating groove 7 is embedded and distributed in a cross shape, and a pair of symmetrical metal plates are welded in the rotating groove 7.

Further, the upper end of the support rod 8 is rotatably connected with the metal plate in the rotating groove 7 through a second rotating shaft, and a torsion spring is connected between the support rod 8 and the rotating groove 7; provides effective shock absorption effect in the stable support and enhances the stability of the mechanical support leg.

The working principle is as follows: when the support leg is used, the driving motor 12 is started through the motor switch, the driving motor 12 drives the driving bevel gear 14 to rotate, the driving bevel gear 14 drives the driven bevel gear 15 to rotate, the driven bevel gear 15 drives the screw rod 11 to rotate, the screw rod 11 and the threaded sleeve 18 are further enabled to rotate relatively, the height of the support leg table board 1 is adjusted, the purpose of adjusting different heights of the support leg 2 is further achieved, workers place engineering machinery with different weights on the support leg table board 1, if the engineering machinery with heavier weights is placed on the support leg table board 1, the support rod 8 on the periphery of the sleeve 5 rotates outwards in the rotating groove 7, the sliding ring 19 slides upwards through the sliding rod 9 and stretches two parts of the rotating connecting rod 20, the supporting range is expanded through the lower end of the support rod 8, the stability of the mechanical support leg is improved, and meanwhile the damping spring 10 on the support rod 6, the torsion spring connected between the tail end of the support rod 8 and the rotating groove 7 and the Provides effective shock absorption effect in the stable support and enhances the stability of the mechanical support leg.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. A mechanical landing leg for engineering machinery is characterized by comprising a landing leg table board (1), a landing leg (2), a reinforcing plate (3), a lifting device (4), a sleeve (5), a supporting rod (6), a rotating groove (7), a support rod (8), a sliding rod (9), a damping spring (10) and a motor switch, wherein the landing leg (2) is fixedly connected to the lower surface of the landing leg table board (1), the lifting device (4) is arranged in the landing leg (2), the lifting device (4) comprises a screw rod (11), a driving motor (12), a first rotating shaft (13), a driving bevel gear (14) and a driven bevel gear (15), a first groove (16) with a downward opening is formed in the landing leg (2), a second groove (17) is formed in the closed end of the first groove (16), and the upper end of the screw rod (11) is arranged in the second groove (17), the upper part of the screw rod (11) is provided with a driven bevel gear (15), the outer side of the driven bevel gear (15) is meshed with a driving bevel gear (14), the driving bevel gear (14) is connected with the driving motor (12) through a rotating shaft I (13), the lower end of the screw rod (11) is provided with a threaded sleeve (18), the lower end of the threaded sleeve (18) is provided with a sleeve (5), the lower end of the sleeve (5) is provided with a supporting rod (6) in a sliding fit manner, the lower part of the periphery of the supporting rod (6) is embedded with a rotating groove (7), the rotating groove (7) is rotatably connected with a support rod (8), the middle part of the lower end of the supporting rod (6) is vertically provided with a sliding rod (9), the bottom of the sliding rod (9) is provided with a gasket, the periphery of the sliding rod (9) is provided with a sliding ring (19) in a sliding manner, the periphery of, the rotary connecting rod (20) is composed of a metal rod and a pipe sleeve which are connected through a spring, the tail end of the metal rod of the rotary connecting rod (20) is connected with the middle part of the inner side of the support rod (8) in a rotating mode in a hinged mode, the tail end of the pipe sleeve of the rotary connecting rod (20) is fixedly welded with the sliding ring (19), a motor switch is arranged on one side of the landing leg table board (1), and the motor switch is electrically connected with the driving motor (12).

2. A mechanical leg for a working machine according to claim 1, characterized in that a plurality of reinforcement plates (3) are fixedly arranged between the legs (2).

3. the mechanical leg for the engineering machinery as claimed in claim 1, wherein a bearing (21) is arranged at the contact part of the screw rod (11) and the second groove (17).

4. A mechanical leg for construction machinery according to claim 1, wherein the upper end of the support rod (6) is connected to the top of the inner wall of the sleeve (5) by a damping spring (10).

5. The mechanical leg for engineering machinery as claimed in claim 1, wherein the rotating groove (7) is distributed in a crisscross shape, and a pair of symmetrical metal plates are welded in the rotating groove (7).

6. The mechanical leg for the engineering machinery as claimed in claim 1, wherein the upper end of the support rod (8) is rotatably connected with the metal plate in the rotating groove (7) through a second rotating shaft, and a torsion spring is connected between the support rod (8) and the rotating groove (7).