Integral frame of skid steer loader

Abstract

The utility model discloses an integral frame of a skid steer loader, and belongs to the technical field of engineering machinery. The defects that in the prior art, a traditional integral frame is not enough in strength of a connecting plate, the frame is prone to deformation, and whole machine assembly and maintenance operation are inconvenient are overcome. The main structure of the fuel tank comprises a left wing box and a right wing box, the upper ends of the left wing box and the right wing box are connected through an L-shaped bent plate, the lower ends of the left wing box and the right wing box are connected through a rear bottom plate, the left wing box, the rear bottom plate, the right wing box and the L-shaped bent plate form a half-box type structure, and the left wing box is provided with a fuel tank assembly and a hood guide mechanism used for opening and closing an engine hood. A hydraulic oil tank assembly and a storage battery assembly are arranged on the right wing box. The utility model is mainly applied to engineering machinery such as skid steer loaders and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to an integral frame of a skid loader. Background Art

[0002] A skid steer loader is a small multifunctional engineering machine, and its frame mostly adopts an integral structure, which is mainly composed of left and right wing boxes, left and right chain boxes and connecting plates. The left and right wing boxes are generally used as hydraulic oil tanks and fuel tanks. The overall layout is left-right symmetrical, and the left and right side components are connected by connecting plates. However, the existing integral frame has the following shortcomings: 1. The connecting plate is not strong enough, which can easily cause the frame to deform; 2. The internal space of the frame is limited and relatively closed, so it is inconvenient to assemble the whole machine and perform maintenance operations; 3. The left and right wing boxes of the frame are connected by a crossbeam, resulting in low structural strength.

[0003] Since the volumes of the hydraulic oil tank and the fuel tank are different, it is necessary to optimize the overall layout of the wing box to improve space utilization and enhance the stability of the entire aircraft. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an integral frame for a skid loader.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A skid loader integral frame comprises a left wing box and a right wing box, wherein the upper ends of the left wing box and the right wing box are connected by an L-shaped bending plate, and the lower ends are connected by a rear bottom plate, and the left wing box, the rear bottom plate, the right wing box and the L-shaped bending plate form a semi-box structure, a fuel tank assembly and a hood guide mechanism for opening and closing an engine hood are arranged on the left wing box, and a hydraulic oil tank assembly and a battery assembly are arranged on the right wing box.

[0007] Preferably, the right wing box includes a right inner wing panel, a second connecting plate, a right outer wing panel and a third connecting plate; a hydraulic oil tank assembly is formed between the right inner wing panel, the second connecting plate and the right outer wing panel; a battery assembly is formed between the right inner wing panel, the right outer wing panel and the third connecting plate; and a battery is arranged on the third connecting plate.

[0008] Preferably, the right inner wing plate is provided with a refueling port for filling oil into the hydraulic oil tank assembly, a liquid level gauge for observing the oil capacity, an oil return port 2 and a vent 2 for returning oil, and the connecting plate 2 is provided with an upper flange for installing an oil suction filter element and a lower flange hole for connecting an oil suction pipe.

[0009] Preferably, a right working arm hinge hole is provided at the highest point of the upwardly protruding triangular area of ​​the right inner wing plate and the right outer wing plate, and a working arm cylinder hinge hole is provided in the forwardly protruding triangular area of ​​the right inner wing plate and the right outer wing plate.

[0010] Preferably, the L-shaped bending plate includes a C-shaped flat plate and an inclined vertical plate, the C-shaped flat plate and the inclined vertical plate are an integrated structure, and the bending angle between the C-shaped flat plate and the inclined vertical plate is a right angle or an obtuse angle; the C-shaped flat plate includes a middle part one and two side parts one, a cab flip support seat is provided on the upper part of the middle part one, and the inclined vertical plate includes a middle part two and two side parts two.

[0011] Preferably, the left wing box comprises a left inner wing panel, a left outer wing panel and a connecting plate 1, and a fuel tank assembly is formed between the left inner wing panel, the left outer wing panel and the connecting plate 1.

[0012] Preferably, a refueling port and an electronic oil level sensor are provided on the upper part of the connecting plate, an oil drain port is provided on the lower part of the connecting plate, an oil suction port and an oil return port are provided on the lower side of the left inner wing plate, an oil suction filter is installed at the front end of the oil suction pipe, and an oil tank cleaning port is provided on the lower side of the left outer wing plate.

[0013] Preferably, a vent 1 is further provided on the left inner wing plate, and a partition is provided inside the fuel tank assembly.

[0014] Preferably, a left hinge hole of the working arm is provided at the highest point of the upwardly protruding triangular area of ​​the left inner wing plate and the left outer wing plate, and a working arm cylinder mounting hole is provided in the forwardly protruding triangular area of ​​the left inner wing plate and the left outer wing plate.

[0015] Preferably, the hood guide mechanism includes a support rod and a fixing seat 1 installed on the inner side of the upper part of the left inner wing panel, one end of the support rod is stuck in the guide groove on the fixing seat 1, and the other end is hinged to the fixing seat 2 at the lower end of the engine hood through a cotter pin.

[0016] Preferably, a flat plate and an inspection opening are provided on the rear bottom plate, and a detachable counterweight block is provided on the flat plate.

[0017] Preferably, the front side of the left wing box is also connected to a left chain box, and the front side of the right wing box is also connected to a right chain box.

[0018] Preferably, a front bottom plate, a front plate, an upper front plate, a front support plate and a fixing plate are welded between the left chain box and the right chain box.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The left wing box, rear floor, right wing box and L-shaped bending plate form a semi-box structure, which can improve the overall strength of the rear side of the frame. The horizontally arranged middle part supports the cab flipping with higher strength; at the same time, the left and right chain boxes on the front side of the frame are connected by the front plate, upper front plate, front support plate and fixed plate to form a box structure. The two structures greatly improve the overall strength of the frame, thereby improving the frame load-bearing capacity and extending the service life;

[0021] 2. The upper side of the right wing box is the hinge hole of the right working arm, the hydraulic oil tank is arranged in the middle, and the battery cavity is arranged on the lower side. The hydraulic oil suction pipe is led out from the upper part of the battery cavity. This layout not only improves the space utilization rate, but also balances the weight of the left and right wing boxes, improves the stability of the whole machine, and the wing panel vents in the two wing boxes can be used as inspection ports, making maintenance more convenient;

[0022] 3. The hood guide mechanism arranged on the left wing box controls the opening and closing of the engine hood with a mechanical structure, which simplifies the structure and saves costs;

[0023] 4. Part of the counterweight is welded to the rear floor in the form of a flat plate to improve the frame strength, and the other part is assembled on the flat plate and can be selected according to the working conditions, which improves the space utilization and does not affect the departure angle;

[0024] 5. The hydraulic oil tank has a flange on the upper and lower sides. The oil suction filter is installed on the upper flange. The lower flange hole is connected to the hydraulic oil suction pipe. The oil suction filter can be replaced without releasing the hydraulic oil, which is convenient for maintenance.

[0025] 6. The frame is equipped with multiple inspection ports to facilitate the repair and maintenance of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the right wing box in the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the left wing box in the utility model;

[0029] Figure 4 It is a structural schematic diagram of the hood guide mechanism in the utility model;

[0030] Figure 5 It is a structural schematic diagram of the L-shaped bending plate in the utility model;

[0031] Figure 6 It is a schematic diagram of the structure when the counterweight block is installed on the rear bottom plate of the utility model.

[0032] In the figure: 1, left wing box; 101, left inner wing plate; 1011, ventilation port 1; 1012, plate 1; 1013, oil suction port; 1014, oil return port 1; 1016, fixing seat 1; 1017, guide groove; 102, left outer wing plate; 1021, left hinge hole of working arm; 1022, mounting hole of working arm oil cylinder; 1023, oil tank cleaning port; 103, connecting plate 1; 1031, oil filling port 1; 1032, oil drain port; 104, electronic oil level sensor; 105, oil suction filter 1; 106, partition;

[0033] 2. Counterweight; 3. Rear bottom plate; 301. Flat plate; 302. Inspection port; 6. Front bottom plate; 7. Right chain box; 8. Front plate; 9. Upper front plate; 10. Left chain box; 11. Front support plate; 12. Fixed plate;

[0034] 4. Right wing box; 401. Right inner wing plate; 4011. Oil return port 2; 4012. Working arm oil cylinder hinge hole; 4013. Ventilation port 2; 4014. Oil filling port; 4015. Right working arm hinge hole; 402. Liquid level gauge; 403. Connecting plate 2; 4031. Lower flange hole; 404. Oil suction filter element; 405. Upper flange; 406. Bolt; 407. Right outer wing plate; 4071. Plate 2; 408. Battery; 409. Connecting plate 3;

[0035] 5. L-shaped bending plate; 501. C-shaped flat plate; 5011. middle part one; 5012. two side parts one; 502. oblique vertical plate; 5021. middle part two; 5022. two side parts two; 503. cab flip support seat;

[0036] 13. Engine hood; 1302. Support rod; 1303. Fixed seat 2; 1304. Split pin. DETAILED DESCRIPTION

[0037] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0038] Embodiment 1:

[0039] like Figure 1 As shown, an integral frame of a skid loader includes a left wing box 1 and a right wing box 4, the upper ends of the left wing box 1 and the right wing box 4 are connected by an L-shaped bending plate 5, and the lower ends are connected by a rear bottom plate 3, and the left wing box 1, the rear bottom plate 3, the right wing box 4 and the L-shaped bending plate 5 form a semi-box structure, a fuel tank assembly and a hood guide mechanism for opening and closing an engine hood 13 are arranged on the left wing box 1, and a hydraulic oil tank assembly and a battery assembly are arranged on the right wing box 4, which has high structural strength, is convenient for the maintenance of the whole machine, and can improve the space utilization rate, thereby improving the rationality of the structural design of the whole machine.

[0040] Embodiment 2:

[0041] like Figure 2 As shown, an integral frame of a skid loader is different from Example 1 in that the right wing box 4 includes a right inner wing plate 401, a second connecting plate 403, a right outer wing plate 407 and a third connecting plate 409, a hydraulic oil tank assembly is formed between the right inner wing plate 401, the second connecting plate 403 and the right outer wing plate 407, a battery assembly is formed between the right inner wing plate 401, the right outer wing plate 407 and the third connecting plate 409, a battery 408 is arranged on the third connecting plate 409, a battery cavity is arranged at the lower side of the hydraulic oil tank assembly, a hydraulic oil tank suction pipe is arranged in the upper space, and the battery 408 is placed in the lower part, so as to improve space utilization.

[0042] Furthermore, the right inner wing plate 401 is provided with a refueling port 4014 for filling oil into the hydraulic oil tank assembly, a liquid level gauge 402 for observing the oil capacity, and an oil return port 4011 for returning oil. The right inner wing plate 401 is provided with a contoured vent 4013 to make its structure more coordinated and convenient for repair and maintenance. The connecting plate 403 is provided with an upper flange 405 for installing an oil suction filter element 404 and a lower flange hole 4031 for connecting an oil suction pipe.

[0043] In this embodiment, the second oil return port 4011 is located in the middle and lower part of the right inner wing plate 401, and the second connecting plate 403 has a flange hole at the top and bottom, and the upper flange plate 405 is installed with the oil suction filter element 404, and the lower flange hole 4031 is connected to the oil suction pipe. When the oil suction filter element 404 needs to be replaced, the six fixing bolts 406 on the upper flange plate 405 can be removed to remove the oil suction filter element 404 without draining the oil, thereby improving the convenience of maintenance.

[0044] Furthermore, a right working arm hinge hole 4015 is provided at the highest point of the upwardly protruding triangular area of ​​the right inner wing plate 401 and the right outer wing plate 407 to avoid the upper flange plate 405 and facilitate the upward removal of the oil suction filter element 404. The structural strength is improved by the second plate 4071 on the lower side. This hole is coaxial with the left hinge hole 1021 of the working arm to ensure the rotation accuracy of the working arm; a working arm cylinder hinge hole 4012 is provided in the forwardly protruding triangular area of ​​the right inner wing plate 401 and the right outer wing plate 407.

[0045] like Figure 5 As shown, the L-shaped bending plate 5 includes a C-shaped flat plate 501 and an inclined vertical plate 502 , the C-shaped flat plate 501 and the inclined vertical plate 502 are an integral structure, and the bending angle between the C-shaped flat plate 501 and the inclined vertical plate 502 is a right angle or an obtuse angle.

[0046] In this embodiment, the L-shaped bending plate 5 is an integrated bending forming structure, the C-shaped flat plate 501 includes a middle part 1 5011 and two side parts 1 5012, the middle part 1 5011 is arranged along the horizontal direction of the frame structure and its two ends are respectively connected to the two side wing boxes, the middle part 1 5011 is provided with a cab flip support seat 503 on the upper part, the two side parts 1 5012 are strip parts extending backward from the two ends of the middle part 1 5011 and changing from wide to narrow, and the two side parts 1 5012 and the middle part 1 5011 are transitioned by a circular arc in the middle. The inclined vertical plate 502 includes a middle part 2 5021 and two side parts 2 5022, the middle part 2 5021 is arranged along the horizontal direction of the frame structure and its two ends are respectively connected to the two side wing boxes, the two side parts 2 5022 are strip parts extending obliquely downward from the two ends of the middle part 2 5021 and changing from wide to narrow, and the two side parts 2 5022 and the middle part 2 5021 are transitioned by a circular arc in the middle. The bending line of the L-shaped bending plate 5 is located between the middle part 1 5011 and the middle part 2 5021. The C-shaped flat plate 501 is arranged parallel to the upper planes of the left and right chain boxes. The structure here can improve the strength of the rear side of the frame to better support the cab flipping and increase the frame load-bearing capacity.

[0047] like Figure 3 As shown, the left wing box 1 includes a left inner wing panel 101, a left outer wing panel 102 and a connecting plate 103. A fuel tank assembly is formed between the left inner wing panel 101, the left outer wing panel 102 and the connecting plate 103. The connecting plate 103 adopts an integrated bending structure with a small number of welds and light welding workload, which can effectively reduce the risk of oil leakage.

[0048] Furthermore, a refueling port 1031 and an electronic oil level sensor 104 are provided on the upper portion of the connecting plate 103, an oil drain port 1032 is provided on the lower portion of the connecting plate 103, an oil suction port 1013 and an oil return port 1014 are provided on the lower side of the left inner wing plate 101, and a fuel tank cleaning port 1023 is provided on the lower side of the left outer wing plate 102.

[0049] In this embodiment, the refueling port 1031 is located at the flange hole on the upper part of the connecting plate 103, the electronic oil level sensor 104 is arranged next to the refueling port 1031, the oil suction port 1013 is on the lower side of the left inner wing plate 101, the oil suction filter 105 is installed at the front end of the oil suction pipe to filter impurities in the oil tank, and the oil return port 1014 is on the left side of the oil suction port 1013. The oil tank cleaning port 1023 is arranged at the lower part of the left outer wing plate 102, and the oil drain port 1032 is convenient for cleaning impurities inside the fuel tank through the oil tank cleaning port 1023 after draining the oil.

[0050] Furthermore, the left inner wing panel 101 is provided with a contoured vent 1011, which greatly improves the ventilation and heat dissipation efficiency and can also be used as an inspection port for convenient repair and maintenance; a partition 106 is provided inside the fuel tank assembly, and the partition 106 separates the oil suction and oil return areas in the fuel tank, so that the oil can be fully cooled.

[0051] Furthermore, a left hinge hole 1021 of the working arm is provided at the highest point of the upwardly protruding triangular area of ​​the left inner wing panel 101 and the left outer wing panel 102, and a plate 1012 is provided on the lower side of the left hinge hole 1021 of the working arm reserved for the left inner wing panel 101 and the left outer wing panel 102 to strengthen its structural strength, and a working arm cylinder mounting hole 1022 is provided in the forwardly protruding triangular area of ​​the left inner wing panel 101 and the left outer wing panel 102.

[0052] like Figure 4 As shown, the hood guide mechanism includes a support rod 1302 and a fixing seat 1016 installed on the inner side of the upper part of the left inner wing panel 101, one end of the support rod 1302 is stuck in the guide groove 1017 on the fixing seat 1016, and the other end is hinged to the fixing seat 2 1303 at the lower end of the engine hood 13 through a cotter pin 1304.

[0053] In this embodiment, the movement trajectory of the engine hood 13 opening upward is limited by the fixing seat 1016 and the support rod 1302. The circular notch on the rear side of the L-shaped guide groove 1017 is the engine hood 13 closed in place, and the rectangular notch on the front side is the engine hood opened in place. The rectangular notch is set downward, which has the function of limiting the sliding of the engine hood 13 after opening. The engine hood 13 is connected to the fixing seat 1016 through the support rod 1302. One end of the support rod 1302 is fixed to the fixing seat 1016 by the cotter pin 1304. On the fixed seat 1303, the other end of the support rod 1302 is stuck in the L-shaped guide groove 1017 of the fixed seat 1016. When the engine hood 13 is opened, the lower end of the support rod 1302 moves along the L-shaped guide groove 1017 to the rectangular notch, and the engine hood 13 is fully opened. When the engine hood 13 is closed, the lower end of the support rod 1302 moves along the L-shaped guide groove 1017 to the circular notch, and the engine hood 13 is fully closed. The opening and closing of the engine hood 13 is controlled by a mechanical structure, which simplifies the structure and saves costs.

[0054] like Figure 6 As shown, a flat plate 301 and an inspection port 302 are provided on the rear bottom plate 3, and a detachable counterweight 2 is provided on the flat plate 301. The flat plate 301 welded on the rear bottom plate 3 serves as a part of the counterweight, and can also improve the strength of the rear bottom plate 3 of the frame. The assembled counterweight 2 can be selected according to the working conditions. Such a layout can improve the frame strength and space utilization while not affecting the departure angle, thereby improving the stability of the whole machine; the rear bottom plate reserves an inspection port 302 for easy repair and maintenance.

[0055] Furthermore, the front side of the left wing box 1 is also connected to the left chain box 10, and the front side of the right wing box 4 is also connected to the right chain box 7. The front bottom plate 6, the front plate 8, the upper front plate 9, the front support plate 11 and the fixing plate 12 are welded between the left chain box 10 and the right chain box 7 to form a box structure, which improves the strength of the front side of the frame. The front plate 8 and the upper front plate 9 adopt a split welding structure. The front plate 8 is bent backwards, and the upper front plate 9 is bent at a right angle, which expands the range of motion of the working arm without affecting the cab space, thereby improving the space utilization rate. The top of the upper front plate 9 is coplanar with the top of the outer chain plates on both sides, forming a sealed cab cavity, reducing noise and improving driving comfort. The frame has a reserved inspection port for easy maintenance.

Claims

1. A skid loader integral frame, comprising a left wing box (1) and a right wing box (4), characterized in that: The upper ends of the left wing box (1) and the right wing box (4) are connected by an L-shaped bending plate (5), and the lower ends are connected by a rear bottom plate (3), and the left wing box (1), the rear bottom plate (3), the right wing box (4) and the L-shaped bending plate (5) form a semi-box structure, the left wing box (1) is provided with a fuel tank assembly and a hood guide mechanism for opening and closing an engine hood (13), and the right wing box (4) is provided with a hydraulic oil tank assembly and a battery assembly.

2. The skid loader integral frame according to claim 1, characterized in that: The right wing box (4) comprises a right inner wing plate (401), a second connecting plate (403), a right outer wing plate (407) and a third connecting plate (409); a hydraulic oil tank assembly is formed between the right inner wing plate (401), the second connecting plate (403) and the right outer wing plate (407); a battery assembly is formed between the right inner wing plate (401), the right outer wing plate (407) and the third connecting plate (409); and a battery (408) is arranged on the third connecting plate (409).

3. The skid loader integral frame according to claim 2, characterized in that: The right inner wing plate (401) is provided with a refueling port (4014) for filling the hydraulic oil tank assembly with oil, a liquid level gauge (402) for observing the oil volume, a second oil return port (4011) and a second vent (4013) for returning oil, and the second connecting plate (403) is provided with an upper flange (405) for installing an oil suction filter element (404) and a lower flange hole (4031) for connecting an oil suction pipe; the right working arm hinge hole (4015) is provided at the highest point of the upwardly protruding triangular area of ​​the right inner wing plate (401) and the right outer wing plate (407), and the working arm oil cylinder hinge hole (4012) is provided in the forwardly protruding triangular area of ​​the right inner wing plate (401) and the right outer wing plate (407).

4. The skid loader integral frame according to claim 1, characterized in that: The L-shaped bending plate (5) comprises a C-shaped flat plate (501) and an inclined vertical plate (502), the C-shaped flat plate (501) and the inclined vertical plate (502) are an integrated structure, and the bending angle between the C-shaped flat plate (501) and the inclined vertical plate (502) is a right angle or an obtuse angle.

5. The skid loader integral frame according to any one of claims 1 to 4, characterized in that: The left wing box (1) comprises a left inner wing panel (101), a left outer wing panel (102) and a connecting plate (103); a fuel tank assembly is formed between the left inner wing panel (101), the left outer wing panel (102) and the connecting plate (103).

6. The skid loader integral frame according to claim 5, characterized in that: The upper portion of the connecting plate (103) is provided with a fuel filling port (1031) and an electronic fuel level sensor (104); the lower portion of the connecting plate (103) is provided with a fuel drain port (1032); the lower side of the left inner wing plate (101) is provided with a fuel suction port (1013) and a fuel return port (1014); the lower side of the left outer wing plate (102) is provided with a fuel tank cleaning port (1023); the left inner wing plate (101) is also provided with a ventilation port (1011); and a partition plate (106) is provided inside the fuel tank assembly.

7. The skid loader integral frame according to claim 5, characterized in that: The highest point of the upwardly protruding triangular area of ​​the left inner wing plate (101) and the left outer wing plate (102) is provided with a left hinge hole (1021) for the working arm, and the forwardly protruding triangular area of ​​the left inner wing plate (101) and the left outer wing plate (102) is provided with a working arm cylinder mounting hole (1022).

8. The skid loader integral frame according to claim 5, characterized in that: The hood guide mechanism comprises a support rod (1302) and a fixing seat (1016) mounted on the inner side of the upper portion of the left inner wing panel (101); one end of the support rod (1302) is clamped in a guide groove (1017) on the fixing seat (1016), and the other end is hinged to a fixing seat (1303) at the lower end of the engine hood (13) through a cotter pin (1304).

9. The skid loader integral frame according to any one of claims 1 to 4, characterized in that: The rear bottom plate (3) is provided with a flat plate (301) and an inspection opening (302), and a detachable counterweight block (2) is provided on the flat plate (301).

10. The skid loader integral frame according to any one of claims 1 to 4, characterized in that: The front side of the left wing box (1) is also connected to a left chain box (10), and the front side of the right wing box (4) is also connected to a right chain box (7); a front bottom plate (6), a front plate (8), an upper front plate (9), a front support plate (11) and a fixing plate (12) are welded between the left chain box (10) and the right chain box (7), and the front plate (8) and the upper front plate (9) are split welded structures, the front plate (8) is bent backwards, and the upper front plate (9) is bent at a right angle.

Images