CN209739036U - Mechanical support leg for engineering machinery - Google Patents

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 outrigger for construction machinery

technical field

The utility model relates to the technical field of a mechanical support leg for construction machinery, in particular to a mechanical support leg for construction machinery.

Background technique

Construction machinery such as concrete pump trucks and truck cranes are often equipped with outriggers. When the construction machinery is walking, the outriggers are retracted; when the construction machinery is working, the outriggers are opened to stabilize the center of gravity of the vehicle. At present, most construction machinery outriggers adopt the following two structural forms: swing type and telescopic type. With the continuous increase of the scope of single-machine operation of construction machinery, the length of the outriggers is required to be larger and larger. Therefore, how to provide a telescopic outrigger with simple and reliable structure and easy manufacture to meet the increasing performance requirements of construction machinery for outriggers is a technical problem urgently to be solved by those skilled in the art. The prior art has the problems that the telescopic height cannot be adjusted freely and the stability is not high.

Utility model content

(1) Technical problems to be solved

In order to overcome the shortcomings of the existing technology, a mechanical outrigger for construction machinery is proposed to solve the problems that the existing mechanical outrigger cannot realize free adjustment and expansion of its height during use, and the stability is not high.

(2) Technical solution

The utility model is realized through the following technical solutions: the utility model proposes a mechanical outrigger for engineering machinery, including a outrigger table, outriggers, reinforcing plates, lifting devices, sleeves, support rods, rotating grooves, support rods, sliding Rod, shock absorbing spring and motor switch, described supporting leg is fixedly connected on the lower surface of supporting leg platform, and described supporting leg is provided with lifting device, and described lifting device comprises screw rod, drive motor, rotating shaft 1, driving bevel gear and Driven bevel gear, the inside of the leg is provided with a groove 1 with the opening facing downward, the closed end of the groove 1 is provided with the groove 2, the upper end of the screw is arranged in the groove 2, and the groove 2 is arranged on the closed end of the screw. The upper part is provided with a driven bevel gear, and the outer side of the driven bevel gear is meshed with a driving bevel gear, and the driving bevel gear is connected with the driving motor through the rotating shaft one, and the lower end of the screw rod is provided with a screw sleeve. The lower end of the screw sleeve is provided with a sleeve, and the lower end of the sleeve is slidably fitted with a support rod, and a rotation groove is embedded in the lower part of the periphery of the support rod, and a support rod is rotatably connected in the rotation groove, and the support rod The lower middle part of the lower end is vertically provided with a sliding rod, the bottom of the sliding rod is provided with a gasket, the outer periphery of the sliding rod is slidably provided with a sliding ring, and the outer periphery of the sliding ring is correspondingly connected to the support rod with a rotating connecting rod. The rotating connecting rod is composed of a metal rod connected by a spring and a pipe sleeve. The end of the metal rod of the rotating connecting rod is hingedly connected to the inner middle part of the support rod. The end of the pipe sleeve of the rotating connecting rod is connected to the The sliding ring is welded and fixed, and a motor switch is provided on one side of the table top of the legs, and the motor switch is electrically connected to the driving motor.

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

Further, a bearing is provided at the contact between the screw rod and the second groove.

Further, the upper end of the support rod is connected to the top of the inner wall of the sleeve through a damping spring.

Further, the rotating grooves are embedded in a cross shape, and a pair of symmetrical metal plates are welded in the rotating grooves.

Further, the upper end of the support rod is rotationally connected to the metal plate in the rotation slot through a second rotating shaft, and a torsion spring is connected between the support rod and the rotation slot.

(3) Beneficial effects

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

1) Start the driving motor 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 to rotate, and then makes the relative rotation between the screw and the screw sleeve, thereby adjusting The height of the table top of the outriggers, and then achieve the purpose of adjusting the different heights of the outriggers.

2) The staff put construction machinery of different weights on the outrigger table. If the heavier construction machinery is placed on the outrigger table, the bracket rods on the periphery of the sleeve will rotate relatively outward in the rotation groove, thereby The sliding ring slides up through the sliding rod and stretches the two parts of the rotating link, so that the lower end of the bracket rod expands the supporting range and improves the stability of the mechanical leg, while the shock absorbing spring on the supporting rod, the end of the bracket rod and the rotating The torsion spring connected between the slots and the spring design in the rotating link can provide effective shock absorption in the stable support, enhancing the stability of the mechanical leg.

Description of drawings

Fig. 1 is the structural representation of mechanical supporting leg in the utility model;

Fig. 2 is the structural representation of lifting device in the utility model;

Fig. 3 is the connection schematic diagram of sleeve and support bar in the utility model;

In the figure: 1 outrigger table, 2 outriggers, 3 reinforcement plates, 4 lifting devices, 5 sleeves, 6 support rods, 7 rotating slots, 8 support rods, 9 sliding rods, 10 shock absorbing springs, 11 screw rods, 12 drive Motor, 13 rotating shafts one, 14 driving bevel gears, 15 driven bevel gears, 16 grooves one, 17 grooves two, 18 screw sleeves, 19 sliding rings, 20 rotating connecting rods, 21 bearings.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1-3, a mechanical outrigger for construction machinery, including outrigger table 1, outrigger 2, reinforcement plate 3, lifting device 4, sleeve 5, support rod 6, rotating groove 7, support rod 8, sliding Rod 9, damping spring 10 and motor switch, described support leg 2 is fixedly connected on the lower surface of support leg platform 1, and described support leg 2 is provided with lifting device 4, and described lifting device 4 comprises screw rod 11, driving motor 12. Revolving shaft one 13, driving bevel gear 14 and driven bevel gear 15, inside of the leg 2 is provided with a groove one 16 with the opening facing downward, and the closed end of the groove one 16 is provided with groove two 17, The upper end of the screw rod 11 is arranged in the groove two 17, the top of the screw rod 11 is provided with a driven bevel gear 15, and the outer side of the driven bevel gear 15 is meshed with a driving bevel gear 14, and the driving bevel gear 14 Connected with the drive motor 12 through the rotating shaft one 13, the lower end of the screw rod 11 is provided with a screw sleeve 18, the lower end of the screw sleeve 18 is provided with a sleeve 5, and the lower end of the sleeve 5 is slidingly fitted with a support Rod 6, the peripheral lower part of the support rod 6 is embedded with a rotation groove 7, and the support rod 8 is connected to the rotation groove 7, and the middle part of the lower end of the support rod 6 is vertically provided with a slide bar 9, and the slide bar The bottom of 9 is provided with gasket, and the periphery of described slide bar 9 is slidably provided with slide ring 19, and the periphery of described slide ring 19 is connected with described support rod 8 correspondingly and is connected with rotating link 20, and described rotating link 20 is passed through Spring-connected metal rods and sleeves, the end of the metal rod of the rotating link 20 is rotatably connected to the middle part of the inner side of the support rod 8 through a hinged connection, the end of the sleeve of the rotating connecting rod 20 is connected to the sliding ring 19 is welded and fixed, and a motor switch is provided on one side of the outrigger platform 1, and the motor switch is electrically connected with the driving motor 12.

Further, a plurality of reinforcement plates 3 are fixedly arranged between the legs 2; the arrangement of the reinforcement plates 3 makes the support of the legs 2 more stable.

Further, a bearing 21 is provided at the contact between the screw rod 11 and the second groove 17 .

Further, the upper end of the support rod 6 is connected to the top of the inner wall of the sleeve 5 through a damping spring 10; the setting of the damping spring 10 has a good damping effect.

Further, the turning slots 7 are embedded in a cross shape, and a pair of symmetrical metal plates are welded in the turning slots 7 .

Further, the upper end of the support rod 8 is connected to the metal plate in the rotating groove 7 through two rotating shafts, and a torsion spring is connected between the support rod 8 and the rotating groove 7; effective support is provided in the stable support. The shock absorption effect enhances the stability of the mechanical outrigger.

Working principle: When in use, start the drive motor 12 through the motor switch, the drive motor 12 drives the driving bevel gear 14 to rotate, the driving bevel gear 14 drives the driven bevel gear 15 to rotate, and the driven bevel gear 15 drives the screw 11 to rotate, thereby making the screw 11 and the screw sleeve 18 are relatively rotated to adjust the height of the outrigger table 1, and then achieve the purpose of adjusting the different heights of the outrigger 2. The staff puts construction machines of different weights on the outrigger table 1. When a heavy engineering machine is placed on the outrigger platform 1, the support rod 8 on the periphery of the sleeve 5 rotates relatively outward in the rotating groove 7, so that the sliding ring 19 slides upward through the sliding rod 9 and stretches the two sides of the rotating connecting rod 20. part, thereby the support rod 8 lower end has expanded the supporting range, improved the stability of this mechanical support leg, simultaneously the damping spring 10 on the support rod 6, the torsion spring connected between the end of the support rod 8 and the rotating groove 7 and the rotating connection The spring design in the rod 20 can provide effective shock absorption in the stable support and enhance the stability of the mechanical leg.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. Under the premise of not departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall into the protection scope of the utility model, and the technology claimed by the utility model The contents are all described in the claims.

Claims (6)

1. A mechanical leg for engineering machinery, characterized in that it comprises a leg table (1), a leg (2), a reinforcing plate (3), a lifting device (4), a sleeve (5), a support rod ( 6), rotating groove (7), support bar (8), slide bar (9), damping spring (10) and motor switch, described support leg (2) is fixedly connected on the lower surface of support leg table top (1) , the lifting device (4) is provided in the leg (2), and the lifting device (4) includes a screw rod (11), a drive motor (12), a rotating shaft (13), a driving bevel gear (14) and A movable bevel gear (15), the inside of the leg (2) is provided with a groove one (16) with the opening facing downward, and the closed end of the groove one (16) is provided with a groove two (17), the The upper end of the screw rod (11) is arranged in the groove two (17), the upper part of the screw rod (11) is provided with a driven bevel gear (15), and 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 drive motor (12) through a rotating shaft one (13), and the lower end of the screw rod (11) is provided with a screw sleeve (18), and the screw sleeve ( 18) is provided with a sleeve (5) at the lower end, and the lower end of the sleeve (5) is slidably fitted with a support rod (6), and the peripheral lower part of the support rod (6) is embedded with a rotation groove (7), A bracket bar (8) is rotatably connected in the turning groove (7), a slide bar (9) is vertically arranged at the middle part of the lower end of the support bar (6), and a gasket is arranged at the bottom of the slide bar (9). The periphery of the slide bar (9) is slidably provided with a slide ring (19), and the periphery of the slide ring (19) is correspondingly connected with a rotating connecting rod (20) with the support bar (8), and the rotating connecting rod ( 20) It consists of a metal rod connected by a spring and a pipe sleeve. The end of the metal rod of the rotating link (20) is rotatably connected to the middle part of the inner side of the support rod (8) in a hinged manner. The rotating connecting rod (20) ) and the slip ring (19) are welded and fixed, and a motor switch is provided on one side of the outrigger table (1), and the motor switch is electrically connected to the drive motor (12). 2. A mechanical support leg for construction machinery according to claim 1, characterized in that a plurality of reinforcement plates (3) are fixedly arranged between the support legs (2). 3. A mechanical support leg for construction machinery according to claim 1, characterized in that a bearing (21) is provided at the contact between the screw rod (11) and the second groove (17). 4. A mechanical support leg for construction machinery according to claim 1, characterized in that the upper end of the support rod (6) is connected to the top of the inner wall of the sleeve (5) through a damping spring (10) . 5. A mechanical support leg for construction machinery according to claim 1, characterized in that the rotating groove (7) is embedded in a cross shape, and a pair of symmetrical metal plates are welded in the rotating groove (7) . 6. A mechanical support leg for construction machinery according to claim 1, characterized in that, the upper end of the support rod (8) is connected to the metal plate in the rotating groove (7) through two rotating shafts, and A torsion spring is connected between the support rod (8) and the rotation groove (7).