Movable arm positioning device for excavator

Abstract

The utility model relates to the technical field of excavators, and discloses a movable arm positioning device for an excavator, which comprises a supporting bottom plate, the top of the supporting bottom plate is fixedly connected with a first fixing plate and a seventh fixing plate, the side edge of the supporting bottom plate is fixedly connected with a second fixing plate, and the second fixing plate is fixedly connected with a first motor. Compared with the prior art, the positioning device has the advantages that the first motor drives the first gear to rotate, drives the second gear to rotate and drives the first threaded rod to rotate, the second gear drives the third fixing block and the fixing rod to rotate, drives the first fixing block to move and drives the supporting seat to swing by an angle, and therefore the angle position of the movable arm can be conveniently adjusted when the movable arm of the excavator is positioned; and a second motor drives a second threaded rod and a third threaded rod to rotate, a fifth fixing plate is driven to move in the opposite direction, sixth fixing plates on the two sides are driven to get close inwards to fix the excavator movable arms of different sizes, and the applicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a boom positioning device for excavators. Background Art

[0002] The boom is the main component of the backhoe, and its structure is divided into two types: integral type and combined type. Steel is the most suitable material for the boom of the excavator in terms of strength, rigidity, fatigue performance, machinability, economy, etc. The cross-sectional height of the boom and the dipper arm cannot be too large, and the torsion resistance must be guaranteed. The box-type structure is equivalent to two side-by-side I-beams in terms of bending resistance, while the torsion resistance is better than the sum of two separate I-beams. During the boom welding process, it needs to be positioned and fixed. The existing boom positioning device for excavators is not convenient for adjusting the angle, cannot be accurately positioned, and is not convenient for fixing booms of different sizes, which makes the device have certain shortcomings. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a boom positioning device for an excavator.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a boom positioning device for an excavator, comprising a supporting base plate, a fixing plate 1 and a fixing plate 7 are fixedly connected to the top of the supporting base plate, a fixing plate 2 is fixedly connected to the side of the supporting base plate, a motor 1 is fixedly connected to the fixing plate 2, an output end of the motor 1 passes through the fixing plate 1 and is fixedly connected to a gear 1, the gear 1 is meshingly connected to the gear 2, a threaded rod 1 is fixedly connected to the top of the gear 2, a fixing block 1 is threadedly connected to the outer side of the threaded rod 1, a fixing rod is rotatably connected to the side of the fixing plate 7, one end of the fixing rod is fixedly connected to a fixing block 3, and the fixing block 3 is rotatably connected to the bottom of the gear 2.

[0005] As a further description of the above technical solution:

[0006] One side of the fixed block is rotatably connected to a fixed block 2, the fixed block 2 is fixedly connected to a support seat, the top of the support seat is fixedly connected to a fixed plate 3, the side of the fixed plate 3 is fixedly connected to a fixed plate 4, the fixed plate 4 is fixedly connected to a motor 2, the output end of the motor 2 is fixedly connected to a threaded rod 2 through the fixed plate 3, one end of the threaded rod 2 is fixedly connected to the threaded rod 3, the threaded rod 2 and the threaded rod 3 are both threadedly connected to a fixed plate 5, and the fixed plate 5 is fixedly connected to a fixed plate 6 on the side.

[0007] As a further description of the above technical solution:

[0008] A connecting plate 1 is fixedly connected to the top of the supporting bottom plate, connecting plates 2 are rotatably connected to both sides of the connecting plate 1, and the top of the connecting plate 2 is fixedly connected to the supporting seat.

[0009] As a further description of the above technical solution:

[0010] The fixing plate 6 is provided with anti-skid particles, and the anti-skid particles are evenly arranged in multiple groups.

[0011] As a further description of the above technical solution:

[0012] The thread directions of the threaded rod 2 and the threaded rod 3 are opposite.

[0013] As a further description of the above technical solution:

[0014] The fixing plates are provided in two groups in a trisymmetrical manner.

[0015] As a further description of the above technical solution:

[0016] The fixing rod is parallel to the top of the supporting base plate.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, the starting motor 1 drives the gear 1 to rotate, the gear 1 drives the gear 2 to rotate, thereby the threaded rod 1 rotates, and at the same time the gear 2 drives the fixed block 3 and the fixed rod to rotate on the fixed plate 7, drives the fixed block 1 to move on the threaded rod 1, thereby drives the support seat to swing angle, which is convenient for adjusting the angle position of the boom when positioning the excavator boom, so that the welding positioning is more accurate and the effect is better.

[0019] 2. In the utility model, the starting motor 2 drives the threaded rod 2 and the threaded rod 3 to rotate, drives the fixing plates 5 on the threaded rod 2 and the threaded rod 3 to move in opposite directions, drives the fixing plates 6 on both sides to move inward to fix the booms of excavators of different sizes, and has higher applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structure of the boom positioning device for an excavator proposed by the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The overall structure of the boom positioning device for an excavator proposed by the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 The utility model is a top view of a boom positioning device for an excavator.

[0023] Legend:

[0024] 1. Support base plate; 2. Fixed plate one; 3. Fixed plate two; 4. Motor one; 5. Gear one; 6. Gear two; 7. Threaded rod one; 8. Fixed block one; 9. Support seat; 10. Fixed block two; 11. Fixed block three; 12. Fixed rod; 13. Fixed plate three; 14. Fixed plate four; 15. Motor two; 16. Threaded rod two; 17. Threaded rod three; 18. Fixed plate five; 19. Fixed plate six; 20. Anti-skid particles; 21. Connecting plate one; 22. Connecting plate two; 23. Fixed plate seven. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-Figure 3 The utility model provides an embodiment: a boom positioning device for an excavator, comprising a supporting base plate 1, a fixing plate 2 and a fixing plate 7 23 are fixedly connected to the top of the supporting base plate 1, a fixing plate 2 3 is fixedly connected to the side of the supporting base plate 1, a motor 4 is fixedly connected to the fixing plate 2 3, an output end of the motor 4 passes through the fixing plate 2 and is fixedly connected to a gear 5, the gear 5 is meshingly connected to a gear 2 6, a threaded rod 7 is fixedly connected to the top of the gear 2 6, a fixing block 8 is threadedly connected to the outer side of the threaded rod 7, a fixing rod 12 is rotatably connected to the side of the fixing plate 7 23, one end of the fixing rod 12 is fixedly connected to a fixing block 3 11, and the fixing block 3 11 is rotatably connected to the bottom of the gear 2 6, so that there is supporting force when the gear 2 6 drives the threaded rod 1 7 to rotate.

[0027] The fixed block 18 is rotatably connected to the fixed block 2 10 at the side, the fixed block 2 10 is fixedly connected to the support seat 9, the top of the support seat 9 is fixedly connected to the fixed plate 3 13, the side of the fixed plate 3 13 is fixedly connected to the fixed plate 4 14, the fixed plate 4 14 is fixedly connected to the motor 2 15, the output end of the motor 2 15 passes through the fixed plate 3 13 and is fixedly connected to the threaded rod 2 16, one end of the threaded rod 2 16 is fixedly connected to the threaded rod 3 17, and the threaded rod 2 16 and the threaded rod 3 17 are both threadedly connected to the fixed plate 5 18. A fixing plate six 19 is fixedly connected to the side of the fixing plate five 18, a connecting plate one 21 is fixedly connected to the top of the supporting base plate 1, connecting plates two 22 are rotatably connected to the two sides of the connecting plate one 21, the top of the connecting plate two 22 is fixedly connected to the supporting seat 9, anti-skid particles 20 are provided on the fixing plate six 19, and the anti-skid particles 20 are evenly arranged in multiple groups, the threaded rod two 16 and the threaded rod three 17 have opposite thread directions, the fixing plate three 13 is symmetrically arranged in two groups, the fixing rod 12 is parallel to the top of the supporting base plate 1, so that the rotation of the gear two 6 is more stable.

[0028] Working principle: Place the boom to be welded on the top of the support seat 9, start the motor 2 15 to drive the threaded rod 2 16 and the threaded rod 3 17 to rotate, thereby driving the fixed plate 5 18 on the threaded rod 2 16 and the threaded rod 3 17 to move inward and close together, clamping and fixing booms of different sizes to avoid instability, start the motor 14 to drive the gear 15 to rotate, the gear 15 drives the gear 2 6 to rotate, the gear 2 6 drives the threaded rod 17 to rotate, the threaded rod 17 drives the fixed block 18 to rise and fall on the threaded rod 17, drives the fixed block 2 10 and the support seat 9 to adjust the angle, and at the same time drives the gear 2 6 and the threaded rod 17 to swing with the fixed block 2 10, and drives the fixed block 3 11 and the fixed rod 12 to rotate on the fixed plate 7 23, so as to facilitate the adjustment of the angle of the boom on the support seat 9, and to facilitate the adjustment to the required angle and position during the boom positioning process of the excavator, so as to make the operation result more accurate.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boom positioning device for an excavator, comprising a supporting base plate (1), characterized in that: The top of the support base plate (1) is fixedly connected with a fixing plate 1 (2) and a fixing plate 7 (23); the side of the support base plate (1) is fixedly connected with a fixing plate 2 (3); the fixing plate 2 (3) is fixedly connected with a motor 1 (4); the output end of the motor 1 (4) passes through the fixing plate 1 (2) and is fixedly connected with a gear 1 (5); the gear 1 (5) is meshingly connected with a gear 2 (6); the top of the gear 2 (6) is fixedly connected with a threaded rod 1 (7); the outer side of the threaded rod 1 (7) is threadedly connected with a fixing block 1 (8); the side of the fixing plate 7 (23) is rotatably connected with a fixing rod (12); one end of the fixing rod (12) is fixedly connected with a fixing block 3 (11); the fixing block 3 (11) is rotatably connected with the bottom of the gear 2 (6).

2. The boom positioning device for an excavator according to claim 1, characterized in that: The fixing block 1 (8) is rotatably connected to the fixing block 2 (10) at the side, the fixing block 2 (10) is fixedly connected to the support seat (9), the top of the support seat (9) is fixedly connected to the fixing plate 3 (13), the fixing plate 3 (13) is fixedly connected to the fixing plate 4 (14) at the side, the fixing plate 4 (14) is fixedly connected to the motor 2 (15), the output end of the motor 2 (15) passes through the fixing plate 3 (13) and is fixedly connected to the threaded rod 2 (16), one end of the threaded rod 2 (16) is fixedly connected to the threaded rod 3 (17), the threaded rod 2 (16) and the threaded rod 3 (17) are both threadedly connected to the fixing plate 5 (18), and the fixing plate 5 (18) is fixedly connected to the fixing plate 6 (19) at the side.

3. The boom positioning device for an excavator according to claim 1, characterized in that: The top of the support base plate (1) is fixedly connected to a connecting plate 1 (21), and both sides of the connecting plate 1 (21) are rotatably connected to connecting plates 2 (22), and the top of the connecting plate 2 (22) is fixedly connected to the support seat (9).

4. The boom positioning device for an excavator according to claim 2, characterized in that: The fixing plate six (19) is provided with anti-skid particles (20), and the anti-skid particles (20) are evenly arranged in multiple groups.

5. The boom positioning device for an excavator according to claim 2, characterized in that: The threaded directions of the second threaded rod (16) and the third threaded rod (17) are opposite.

6. The boom positioning device for an excavator according to claim 2, characterized in that: The fixing plate three (13) is symmetrically provided with two groups.

7. The boom positioning device for an excavator according to claim 1, characterized in that: The fixing rod (12) is parallel to the top of the supporting base plate (1).

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