Excavator cab frame

Abstract

The utility model discloses an excavator cab frame, it belongs to engineering machinery field, and its prior art frame structure weak strength, the problem of poor supporting effect, frame deformation big. It mainly includes left side frame, rear side frame and right side frame, and the left side frame is including bottom cross pipe I, is equipped with left front stand, left middle stand and rear stand I on bottom cross pipe I, be equipped with the inclined draw steel pipe between left middle stand and rear stand I, is equipped with the fixed plate on the inclined draw steel pipe, be equipped with the unlocking device on the fixed plate. The utility model under the prerequisite of satisfying size demand, possesses the frame of higher strength, has lower weight simultaneously, and the overall rigidity of frame is strong, and the bearing capacity is high, can pass through structural dispersion transmission when being impacted by force, and the overall deformation is small, effectively prevent the harm that the operator is brought about due to the frame fracture or the deformation of too big in the process of accidental roll over to equipment.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery, and more specifically, to an excavator cab frame. Background Technology

[0002] As the core operating space of construction machinery, the cab's design directly affects the operator's efficiency, safety, and comfort. Safety and lightweight design have always been key considerations in cab design. While wheeled excavator cab technology has made some progress, it still suffers from the following drawbacks: Limited by size and cost requirements, the cab uses inferior materials, and the simple frame lacks specialized reinforcement. In the event of a rollover or impact from falling objects, the existing frame structure, while meeting size requirements, is weak, provides poor support, and suffers significant deformation, resulting in low safety. Traditional collision protection structures based on steel frame reinforcement increase weight, sacrifice vehicle energy efficiency, and are costly, thus reducing the market competitiveness of wheeled excavators. Utility Model Content

[0003] The purpose of this utility model is to provide an excavator cab frame to solve the problems of weak frame structure strength, poor support effect, and large frame deformation in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] An excavator cab frame includes a left side frame, a rear side frame, and a right side frame. The left side frame includes a bottom horizontal tube I, on which a left front column, a left middle column, and a rear column I are mounted. A diagonal steel pipe is provided between the left middle column and the rear column I, and a fixing plate is provided on the diagonal steel pipe. An unlocking device is provided on the fixing plate. The rear side frame includes a bottom horizontal tube II. One end of the bottom horizontal tube II is connected to the bottom horizontal tube I, and the other end is connected to a concave frame. A rear column II is provided at the top of the concave frame, and the tops of the rear columns I and II are connected by a top horizontal tube. The right side frame includes a right crossbeam, one end of which is connected to the rear column II, and the other end is connected to the right front column. A lower column is provided at the bottom of the right crossbeam. A canopy and a reinforcing plate are connected between the left front column and the right front column.

[0006] Furthermore, the concave frame includes a vertical rectangular tube, a horizontal rectangular tube, and a protective plate. The top of the vertical rectangular tube is connected to one end of the horizontal rectangular tube, and the other end of the horizontal rectangular tube is fixed to the rear column II. The protective plate is installed on the vertical and horizontal rectangular tubes.

[0007] Furthermore, a supporting steel pipe is welded between the rear column I and the rear column II, and a notch is provided at the weld of the supporting steel pipe.

[0008] Furthermore, the rear column I and the rear column I are inclined.

[0009] Furthermore, the bottom of the ceiling is provided with ceiling reinforcing ribs.

[0010] Furthermore, a slide rail mounting plate is provided on the right front pillar.

[0011] Furthermore, both the left and right front pillars are formed by bending P-shaped special-shaped steel pipes.

[0012] Furthermore, a reinforcing tube is welded between the left front pillar and the right front pillar, and a lower bending plate is provided on the reinforcing tube, with a mounting seat provided on the lower bending plate.

[0013] Furthermore, it also includes interior trim, which includes a panel, a right-side interior trim assembly, a left-side interior trim assembly, and a rear interior trim assembly; the panel is equipped with a rocker switch; the right-side interior trim assembly is equipped with an air conditioning vent and a gear shift lever; the left-side interior trim assembly includes a document bag and a fire extinguisher mounting bracket; the interior trim also includes a headliner.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model, while meeting dimensional requirements, features a higher-strength frame with lower weight. The frame boasts high overall rigidity and load-bearing capacity, and its impact resistance is distributed structurally, resulting in minimal overall deformation. This effectively prevents operator injury during accidental rollovers caused by frame breakage or excessive deformation. A diagonal steel pipe is installed between the left center column and rear column I, significantly enhancing the frame's lateral torsional stiffness and impact resistance. The fixing plate serves as the mounting plate for the unlocking device and also as a reinforcing rib for the rear column, achieving dual functionality and saving materials and space. The concave frame, composed of vertical and horizontal rectangular tubes, cleverly ensures the strength of the rear structure while providing space for the mechanical gearbox, preventing interference. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the left frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the rear frame structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the right frame structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the front structure of this utility model;

[0021] Figure 6This is a schematic diagram of the top structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the interior of this utility model.

[0023] In the diagram: 1. Front left pillar; 2. Center left pillar; 3. Bottom horizontal tube I; 4. Rear pillar I; 5. Diagonal tie rod; 6. Fixing plate; 7. Rear pillar II; 8. Supporting steel tube; 9. Bottom horizontal tube II; 10. Vertical rectangular tube; 11. Horizontal rectangular tube; 12. Top horizontal tube; 13. Right crossbeam; 14. Lower pillar; 15. Front right pillar; 16. Reinforcing plate; 17. Lower bending plate; 18. Mounting seat; 19. Headliner; 20. Slide rail mounting plate; 21. Protective plate; 22. Headliner reinforcing rib; 23. Left side interior trim assembly; 24. Right side interior trim assembly; 25. Rear interior trim assembly; 26. Headliner interior trim; 27. Assembly panel. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the creation of this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Example 1: An excavator cab frame, such as Figures 1-7 As shown, the cab includes a left side frame, a rear side frame, and a right side frame. The left side frame includes a bottom horizontal tube I3, on which a left front upright 1, a left middle upright 2, and a rear upright I4 are mounted. The bottom horizontal tube I3 is fixed to the left front upright 1, the left middle upright 2, and the rear upright I4 by reinforcing ribs. A diagonal steel pipe 5 is provided between the left middle upright 2 and the rear upright I4, effectively improving the stability and strength of the rear side of the cab. A fixing plate 6 is provided on the diagonal steel pipe 5, and the fixing plate 6 is equipped with an unlocking device. The fixing plate 6 can also be used as a rear upright reinforcing rib plate, achieving two uses in one plate, saving materials and space.

[0027] The rear frame includes a bottom horizontal tube II9; one end of the bottom horizontal tube II9 is ​​overlapped with the bottom horizontal tube I3, and the other end is connected to an inner concave frame; the top of the inner concave frame is provided with a rear column II7, and the top of the rear column I4 and the rear column II7 are connected by a top horizontal tube 12 to enhance the structural continuity and rigidity of the top of the rear frame.

[0028] The right side frame includes a right crossbeam 13, one end of which is connected to the rear column II 7, and the other end is connected to the right front column 15. The bottom of the right crossbeam 13 is provided with a lower column 14, which provides an additional support point for the bottom right side of the frame and enhances the stability of the overall chassis. The left front column 1 and the right front column 15 are connected by a canopy 19 and a reinforcing plate 16, which not only form a support for the cab roof, but also enhance the lateral rigidity of the front frame.

[0029] Example 2: An excavator cab frame, the concave frame comprising a vertical rectangular tube 10, a horizontal rectangular tube 11, and a protective plate 21, wherein the top of the vertical rectangular tube 10 is connected to one end of the horizontal rectangular tube 11, and the other end of the horizontal rectangular tube 11 is fixed to the rear column II 7; the protective plate 21 is disposed on the vertical rectangular tube 10 and the horizontal rectangular tube 11. The concave frame provides necessary space for the engine at the rear of the cab, avoiding interference.

[0030] A supporting steel pipe 8 is welded between the rear column I4 and the rear column II7, and a notch is provided at the weld joint of the supporting steel pipe 8. The welding of the supporting steel pipe 8 between the rear column I4 and the rear column II7 further strengthens the rigidity of the rear frame. The notch at the weld joint helps to optimize the welding process, reduce stress concentration, and improve the reliability and fatigue life of the weld.

[0031] The rear pillars I4 and II7 are inclined, which not only optimizes the interior space of the driver's cab and forms a more stable trapezoidal support structure, but also improves the overall compressive and overturning resistance of the frame.

[0032] The canopy 19 is a stamped structure with a canopy reinforcing rib 22 at the bottom; this effectively prevents the canopy 19 from deforming, enhances its compressive strength, and helps it withstand the impact of falling objects.

[0033] The right front pillar 15 is equipped with a slide rail mounting plate 20. While enabling the windshield to slide, the windshield slide rail mounting plate 20 also serves as a reinforcing rib between the right front pillar 15 and the upper left pillar, increasing their strength and enhancing the ability of the two pillars to withstand horizontal forces.

[0034] Both the left front pillar 1 and the right front pillar 15 are formed by bending P-shaped special-shaped steel pipes. Compared with multi-segment welding, this method can eliminate quality problems caused by welding defects. One-piece molding also achieves a better appearance, eliminates the influence of welds, and can structurally enhance the frame strength.

[0035] A reinforcing tube is welded between the left front pillar 1 and the right front pillar 15, and a lower bending plate 17 is welded on the reinforcing tube. A mounting seat 18 is provided on the lower bending plate 17; the cab frame is fixed to the bottom frame.

[0036] The interior consists of a panel 27, a right-side interior assembly 24, a right-side pillar, a headliner 26, an air conditioning and radio interior panel, a left-side pillar, a left-side interior assembly 23, an upper access panel, a lower access panel, and a rear interior assembly 25. The panel 27 houses the rocker switch in the driver's cab, conveniently located on the right-hand side. The right-side interior assembly 24 integrates the air conditioning vents and gear shift lever. Both the right and left pillars contain two air conditioning vents. The left-side interior assembly 23 includes a document pocket and a fire extinguisher mounting bracket 18. The rear interior assembly has two access panels (upper and lower) for routine maintenance and upkeep. The rear interior assembly also conceals the rear wiring harness. All interior components have their own independent functions, yet together they create an aesthetically pleasing and visually appealing whole. The overall design considers ergonomics to enhance driving comfort.

[0037] Everything else is the same as in Example 1.

[0038] The left front column 1, right front column 15, left middle column 2, rear column I 4, and rear column II 7 of this utility model use reinforced rectangular tubes, providing a higher-strength frame. The frame has high overall rigidity and load-bearing capacity. When subjected to impact, the force is distributed through the structure, resulting in minimal overall deformation and effectively preventing injury to the operator due to frame breakage or excessive deformation during accidental rollover. The bottom horizontal tube I 3 is reinforced with triangular ribs to the left front column 1, left middle column 2, and rear column I 4, respectively. The right horizontal beam 13 is also reinforced with triangular ribs at the bottom of the rear column II 7. The triangular ribs fill gap areas, distribute welding stress, and prevent weld tearing. Thin plates are used in the protective plate 21 and interior trim to achieve lightweighting; thin plates are also used in the main body of the roof 19. The thin plate substrate reduces weight, and the integrated protective roof 19 has a stamped roof reinforcing rib 22. Combined with the top horizontal tube 12 and reinforcing plate 16, the top frame can effectively disperse the force when subjected to falling object impact, preventing the falling object from directly penetrating and injuring the operator; the bottom horizontal tube I3, the bottom horizontal tube II9 and the lower bending plate 17 are stacked to prevent weld tearing caused by stress concentration from affecting the overall structure.

[0039] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. An excavator cab frame, comprising a left side frame, a rear side frame, and a right side frame, characterized in that: The left side frame includes a bottom horizontal tube I (3), on which a left front column (1), a left middle column (2), and a rear column I (4) are provided; a diagonal steel pipe (5) is provided between the left middle column (2) and the rear column I (4), and a fixing plate (6) is provided on the diagonal steel pipe (5), and an unlocking device is provided on the fixing plate (6); the rear side frame includes a bottom horizontal tube II (9); one end of the bottom horizontal tube II (9) is connected to the bottom horizontal tube I (3), and the other end is connected to It has a concave frame; the top of the concave frame is provided with a rear column II (7), and the top of the rear column I (4) and the rear column II (7) are connected by a top horizontal tube (12); the right frame includes a right horizontal beam (13), one end of the right horizontal beam (13) is connected to the rear column II (7), and the other end is connected to the right front column (15); the bottom of the right horizontal beam (13) is provided with a lower column (14); the left front column (1) and the right front column (15) are connected by a canopy (19) and a reinforcing plate (16).

2. The excavator cab frame according to claim 1, characterized in that: The concave frame includes a vertical rectangular tube (10) and a horizontal rectangular tube (11). The top of the vertical rectangular tube (10) is connected to one end of the horizontal rectangular tube (11), and the other end of the horizontal rectangular tube (11) is fixed to the rear column II (7).

3. The excavator cab frame according to claim 1, characterized in that: A supporting steel pipe (8) is welded between the rear column I (4) and the rear column II (7), and a notch is provided at the weld of the supporting steel pipe (8).

4. The excavator cab frame according to claim 3, characterized in that: The rear columns I (4) and II (7) are set at an angle.

5. The excavator cab frame according to claim 1, characterized in that: The bottom of the canopy (19) is provided with canopy reinforcing ribs (22).

6. The excavator cab frame according to claim 1, characterized in that: The left front pillar (1) and right front pillar (15) are both made of P-shaped special steel pipes bent.

7. The excavator cab frame according to claim 6, characterized in that: The right front column (15) is provided with a slide rail mounting plate (20).

8. The excavator cab frame according to claim 7, characterized in that: A reinforcing tube is welded between the left front pillar (1) and the right front pillar (15), and a lower bending plate (17) is provided on the reinforcing tube, and a mounting seat (18) is provided on the lower bending plate (17).

9. The excavator cab frame according to claim 1, characterized in that: It also includes interior trim, which includes a mounting panel (27), a right-side interior trim assembly (24), a left-side interior trim assembly (23), and a rear interior trim assembly (25); the mounting panel (27) is equipped with a rocker switch; the right-side interior trim assembly (24) is equipped with an air conditioning vent and a gear shift lever; the left-side interior trim assembly (23) includes a document bag and a fire extinguisher mounting bracket (18).

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