Supporting leg structure and engineering machinery

Abstract

The invention provides a supporting leg structure and engineering machinery, and relates to the technical field of engineering machinery, and the supporting leg structure comprises a first supporting side plate; the second supporting side plate is arranged opposite to the first supporting side plate; a bottom plate; the middle vertical plate is arranged between the first supporting side plate and the second supporting side plate and is connected with the bottom plate; a first lower plate; a first upper plate; a second lower plate; a second upper plate; a first included angle is formed between the first lower plate and the middle vertical plate, a second included angle is formed between the first upper plate and the middle vertical plate, a third included angle is formed between the second lower plate and the middle vertical plate, a fourth included angle is formed between the second upper plate and the middle vertical plate, and the first included angle, the second included angle, the third included angle and the fourth included angle are all larger than or equal to 15 degrees. According to the technical scheme, the inclination angles are formed between the middle vertical plate and the two outer side plates of the supporting legs, goods can slide off conveniently, the goods sliding amount can be increased, and goods accumulation is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a support leg structure and engineering machinery. Background Art

[0002] At present, cantilevered roadheaders are widely used in coal mines, non-coal mines and engineering tunnel construction. The rear support part of the cantilevered roadheader is supported on the ground during operation to stabilize the equipment body. Since its position is close to the material drop point, the support legs of the rear support part are often buried by the cargo piled up at the material drop point. When the support cylinder is extended and retracted, a closed cavity is formed between the lever head and the bottom of the support leg, which makes it difficult to discharge the cargo between the support cylinder and the support leg. When the support cylinder is retracted, the cargo invades the support cylinder seal, which causes the failure of the support cylinder seal over time and reduces the attendance rate of the cantilevered roadheader. The existing technology exists: the upper cover plate of the support leg is formed by bending, but the thickness of the plate increases the difficulty of bending, and this plate is a special-shaped part, which increases the difficulty of bending. The support leg and the support cylinder form a closed cavity, and the cargo cannot be discharged quickly when the support cylinder is retracted, which causes the cargo to invade and damage the support cylinder seal. Summary of the invention

[0003] The embodiments according to the present application are intended to improve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, an object according to an embodiment of the present application is to provide a supporting leg structure.

[0005] Another object of an embodiment of the present application is to provide a construction machine.

[0006] In order to achieve the above-mentioned purpose, according to the technical solution of the first aspect of the present application, a supporting leg structure is provided, including: a first supporting side plate; a second supporting side plate, which is arranged opposite to the first supporting side plate; a bottom plate, which is arranged between the first supporting side plate and the second supporting side plate, and is respectively connected to the first supporting side plate and the second supporting side plate; an intermediate vertical plate, which is arranged between the first supporting side plate and the second supporting side plate, and is connected to the bottom plate; a first lower plate, one end of the first lower plate is connected to the bottom plate, and the two sides of the first lower plate are respectively connected to the first supporting side plate and the intermediate vertical plate; a first upper plate, one end of the first upper plate is connected to the end of the first lower plate away from the bottom plate, and the two sides of the first upper plate are respectively connected to the first supporting side plate and the intermediate vertical plate; The second lower plate, one end of the second lower plate is connected to the bottom plate, and the two sides of the second lower plate are respectively connected to the second supporting side plates and the middle vertical plate; the second upper plate, one end of the second upper plate is connected to the end of the second lower plate away from the bottom plate, and the two sides of the second upper plate are respectively connected to the second supporting side plates and the middle vertical plate; a first angle is formed between the first lower plate and the middle vertical plate, a second angle is formed between the first upper plate and the middle vertical plate, a third angle is formed between the second lower plate and the middle vertical plate, and a fourth angle is formed between the second upper plate and the middle vertical plate, and the first angle, the second angle, the third angle and the fourth angle are all greater than or equal to 15°.

[0007] According to the supporting leg structure provided by the present application, the supporting leg structure includes a first supporting side plate, a second supporting side plate, a bottom plate, an intermediate vertical plate, a first lower plate, a first upper plate, a second lower plate and a second upper plate. Among them, the second supporting side plate is arranged opposite to the first supporting side plate. The bottom plate is arranged between the first supporting side plate and the second supporting side plate, and is respectively connected to the first supporting side plate and the second supporting side plate. The intermediate vertical plate is arranged between the first supporting side plate and the second supporting side plate, and is connected to the bottom plate. The intermediate vertical plate is arranged in the middle of the supporting leg to improve the strength and reliability of the supporting leg structure. A first angle is formed between the first lower plate and the intermediate vertical plate, a second angle is formed between the first upper plate and the intermediate vertical plate, a third angle is formed between the second lower plate and the intermediate vertical plate, and a fourth angle is formed between the second upper plate and the intermediate vertical plate. The first angle, the second angle, the third angle and the fourth angle are all greater than or equal to 15°, which is convenient for the goods to slide down, can improve the amount of goods sliding, and reduce the accumulation of goods.

[0008] In addition, the technical solution provided by this application may also have the following additional technical features:

[0009] In some technical solutions, optionally, the supporting leg structure further includes: a reinforcing plate, two ends of which are respectively connected to the first end of the first supporting side plate and the first end of the second supporting side plate, and there is a gap between the reinforcing plate and the bottom plate.

[0010] In this technical solution, the support leg structure further includes a reinforcing plate, the two ends of which are respectively connected to the first end of the first support side plate and the first end of the second support side plate, and there is a gap between the reinforcing plate and the bottom plate. By increasing the distance between the reinforcing plate and the bottom plate, the closed cavity between the support leg and the support oil cylinder is destroyed, so that the cargo can be discharged smoothly when the support oil cylinder is retracted.

[0011] In some technical solutions, optionally, the supporting leg structure further includes: a first ear plate, which is arranged at a first end of the first supporting side plate and is located on a side of the first supporting side plate close to the second supporting side plate.

[0012] In this technical solution, the supporting leg structure further includes a first ear plate, which is arranged at a first end of the first supporting side plate and is located on a side of the first supporting side plate close to the second supporting side plate.

[0013] In some technical solutions, optionally, the supporting leg structure further includes a second ear plate, which is provided at the second end of the first supporting side plate and is located on a side of the first supporting side plate close to the second supporting side plate.

[0014] In this technical solution, the supporting leg structure further includes a second ear plate, which is arranged at the second end of the first supporting side plate and is located on a side of the first supporting side plate close to the second supporting side plate.

[0015] In some technical solutions, optionally, the supporting leg structure further includes: a back plate, one end of which is connected to the bottom plate, and the other end of which is connected to the second ear plate.

[0016] In this technical solution, the supporting leg structure also includes a back plate, one end of which is connected to the bottom plate, and the other end of which is connected to the second ear plate.

[0017] In some technical solutions, optionally, a first unloading hole is provided on the first supporting side plate, and the first unloading hole is located between the reinforcing plate and the first lower plate; a second unloading hole is provided on the second supporting side plate, and the second unloading hole is located between the reinforcing plate and the second lower plate.

[0018] In this technical solution, a first discharge hole is provided on the first supporting side plate, and the first discharge hole is located between the reinforcing plate and the first lower plate. A second discharge hole is provided on the second supporting side plate, and the second discharge hole is located between the reinforcing plate and the second lower plate. By providing discharge holes on both side plates of the supporting legs, the cargo can be discharged smoothly through the discharge holes and the discharge port when the supporting oil cylinder is retracted or extended, thereby preventing the cargo from damaging the seal of the supporting oil cylinder.

[0019] In some technical solutions, optionally, the first discharge hole is in the shape of an elongated strip or a circle; and / or the second discharge hole is in the shape of an elongated strip or a circle.

[0020] In this technical solution, the first discharge hole is in the shape of an elongated strip or a circle. The second discharge hole is in the shape of an elongated strip or a circle.

[0021] In some technical solutions, optionally, the middle vertical plate is connected to the bottom plate by welding.

[0022] In this technical solution, the middle vertical plate is welded to the bottom plate, and the supporting legs are welded to reduce production difficulty and cost.

[0023] In some technical solutions, optionally, the first lower plate and the first upper plate are respectively welded to the first supporting side plate and the middle vertical plate; and / or the second lower plate and the second upper plate are respectively welded to the second supporting side plate and the middle vertical plate.

[0024] In this technical solution, the first lower plate and the first upper plate are respectively welded to the first supporting side plate and the middle vertical plate. The second lower plate and the second upper plate are respectively welded to the second supporting side plate and the middle vertical plate. By adopting the tailor-welded structure, the manufacturing process is simple, the cost is low, and the structure is reasonable, safe and reliable.

[0025] According to the technical solution of the second aspect of the present application, there is provided an engineering machinery, comprising: a supporting leg structure as in any one of the technical solutions of the first aspect of the present application.

[0026] The engineering machinery provided by the technical solution of the present application includes a supporting leg structure as in any one of the technical solutions in the first aspect of the present application, and thus it has all the beneficial effects of the supporting leg structure as in any one of the technical solutions in the first aspect of the present application, which will not be repeated here.

[0027] Additional aspects and advantages of the embodiments according to the present application will become apparent in the following description or will be understood through the practice of the embodiments according to the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a three-dimensional structure of a supporting leg structure according to an embodiment provided by the present application;

[0029] Figure 2 is a partial three-dimensional structural schematic diagram of a supporting leg structure according to an embodiment provided by the present application;

[0030] Figure 3 is a partial three-dimensional structural schematic diagram of a supporting leg structure according to another embodiment provided by the present application;

[0031] Figure 4 is a schematic side view of a supporting leg structure according to an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of the front view of a supporting leg structure according to an embodiment provided by the present application;

[0033] Figure 6It is a schematic diagram of a top view of a supporting leg structure according to an embodiment provided in the present application.

[0034] in, Figures 1 to 6 The corresponding relationship between the reference numerals and component names in the figure is:

[0035] 10: Support leg structure; 110: First support side plate; 112: First discharge hole; 120: Second support side plate; 122: Second discharge hole; 130: Bottom plate; 140: Middle vertical plate; 150: First lower plate; 160: First upper plate; 170: Second lower plate; 180: Second upper plate; 190: Reinforcement plate; 210: First ear plate; 220: Second ear plate; 230: Back plate. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present application, the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the features of the embodiments of the present application can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present application. However, the embodiments of the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection provided by the embodiments of the present application is not limited to the specific embodiments disclosed below.

[0038] Refer to the following Figures 1 to 6 Some embodiments provided according to the present application are described.

[0039] like Figure 1 , Figure 2 and Figure 3As shown, a supporting leg structure 10 proposed according to an embodiment of the present application includes a first supporting side plate 110, a second supporting side plate 120, a bottom plate 130, an intermediate vertical plate 140, a first lower plate 150, a first upper plate 160, a second lower plate 170 and a second upper plate 180. Specifically, the second supporting side plate 120 is arranged opposite to the first supporting side plate 110. The bottom plate 130 is arranged between the first supporting side plate 110 and the second supporting side plate 120, and respectively connects the first supporting side plate 110 and the second supporting side plate 120. The intermediate vertical plate 140 is arranged between the first supporting side plate 110 and the second supporting side plate 120, and is connected to the bottom plate 130. One end of the first lower plate 150 is connected to the bottom plate 130, and both sides of the first lower plate 150 are respectively connected to the first supporting side plate 110 and the intermediate vertical plate 140. One end of the first upper plate 160 is connected to one end of the first lower plate 150 away from the bottom plate 130, and the two sides of the first upper plate 160 are respectively connected to the first supporting side plate 110 and the middle vertical plate 140. One end of the second lower plate 170 is connected to the bottom plate 130, and the two sides of the second lower plate 170 are respectively connected to the second supporting side plate 120 and the middle vertical plate 140. One end of the second upper plate 180 is connected to one end of the second lower plate 170 away from the bottom plate 130, and the two sides of the second upper plate 180 are respectively connected to the second supporting side plate 120 and the middle vertical plate 140. A first angle is formed between the first lower plate 150 and the middle vertical plate 140, a second angle is formed between the first upper plate 160 and the middle vertical plate 140, a third angle is formed between the second lower plate 170 and the middle vertical plate 140, and a fourth angle is formed between the second upper plate 180 and the middle vertical plate 140, and the first angle, the second angle, the third angle and the fourth angle are all greater than or equal to 15°.

[0040] The supporting leg structure 10 provided in this embodiment includes a first supporting side plate 110, a second supporting side plate 120, a bottom plate 130, an intermediate vertical plate 140, a first lower plate 150, a first upper plate 160, a second lower plate 170 and a second upper plate 180. The second supporting side plate 120 is arranged opposite to the first supporting side plate 110. The bottom plate 130 is arranged between the first supporting side plate 110 and the second supporting side plate 120, and respectively connects the first supporting side plate 110 and the second supporting side plate 120. The intermediate vertical plate 140 is arranged between the first supporting side plate 110 and the second supporting side plate 120, and is connected to the bottom plate 130. The intermediate vertical plate 140 is arranged in the middle of the supporting leg to improve the strength and reliability of the supporting leg structure 10. A first angle is formed between the first lower plate 150 and the middle vertical plate 140, a second angle is formed between the first upper plate 160 and the middle vertical plate 140, a third angle is formed between the second lower plate 170 and the middle vertical plate 140, and a fourth angle is formed between the second upper plate 180 and the middle vertical plate 140. The first angle, the second angle, the third angle and the fourth angle are all greater than or equal to 15°, which facilitates the sliding of goods, increases the sliding amount of goods and reduces the accumulation of goods.

[0041] like Figure 4 As shown, in some embodiments, optionally, the support leg structure 10 further includes a reinforcing plate 190, the two ends of which are respectively connected to the first end of the first support side plate 110 and the first end of the second support side plate 120, and there is a gap between the reinforcing plate 190 and the bottom plate 130. By increasing the distance between the reinforcing plate 190 and the bottom plate 130, the closed cavity between the support leg and the support cylinder is destroyed, so that the cargo can be discharged smoothly when the support cylinder is retracted.

[0042] In some embodiments, optionally, the supporting leg structure 10 also includes a first ear plate 210, which is provided at the first end of the first supporting side plate 110 and located on a side of the first supporting side plate 110 close to the second supporting side plate 120, and the first ear plate 210 is used for the rotation of the supporting leg structure 10.

[0043] In some embodiments, optionally, the supporting leg structure 10 also includes a second ear plate 220, which is provided at the second end of the first supporting side plate 110 and located on the side of the first supporting side plate 110 close to the second supporting side plate 120, and the second ear plate 220 is used for the rotation of the supporting leg structure 10 relative to the machine body.

[0044] In some embodiments, optionally, the supporting leg structure 10 further includes a back plate 230 , one end of the back plate 230 is connected to the bottom plate 130 , and the other end of the back plate 230 is connected to the second ear plate 220 .

[0045] In some embodiments, optionally, a first discharge hole 112 is provided on the first supporting side plate 110, and the first discharge hole 112 is located between the reinforcing plate 190 and the first lower plate 150. A second discharge hole 122 is provided on the second supporting side plate 120, and the second discharge hole 122 is located between the reinforcing plate 190 and the second lower plate 170. By providing discharge holes on both side plates of the supporting legs, the cargo can be discharged smoothly through the discharge holes and the discharge port when the supporting oil cylinder is retracted or extended, thereby preventing the cargo from damaging the seal of the supporting oil cylinder.

[0046] In some embodiments, optionally, the first discharge hole 112 is in the shape of an elongated strip or a circle. The second discharge hole 122 is in the shape of an elongated strip or a circle.

[0047] The middle vertical plate 140 is welded to the bottom plate 130. The supporting legs adopt a tailor-welded structure, which can reduce production difficulty and cost.

[0048] In some embodiments, optionally, the first lower plate 150 and the first upper plate 160 are respectively welded to the first supporting side plate 110 and the middle vertical plate 140. The second lower plate 170 and the second upper plate 180 are respectively welded to the second supporting side plate 120 and the middle vertical plate 140. By adopting the tailor-welded structure, the manufacturing process is simple, the cost is low, and the structure is reasonable, safe and reliable.

[0049] An engineering machine proposed according to an embodiment of the present application includes a support leg structure 10 as described in any of the above embodiments.

[0050] The engineering machinery provided according to the embodiment of the present application includes the support leg structure 10 as any of the above embodiments, and thus has all the beneficial effects of the support leg structure 10 as any of the above embodiments, which will not be described in detail herein.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, according to a specific embodiment of the support leg structure 10 proposed in the present application, there are vertical ribs in the middle of the support leg, and the upper and front parts are covered with connecting rib plates, and the rib plates and the two outer side plates of the support leg are inclined at an angle to facilitate the sliding of goods and avoid the accumulation of goods; the support leg adopts a welded structure, with a simple manufacturing process, low cost, reasonable structure, safety and reliability. Discharge holes are provided on the two side plates of the support leg, and the distance between the reinforcing plate 190 and the bottom plate 130 is increased, thereby destroying the closed cavity between the support leg and the support cylinder, so that the goods can be discharged smoothly when the support cylinder is retracted.

[0052] Specifically, the main structure of the supporting leg includes a first supporting side panel 110, a second supporting side panel 120, a bottom panel 130, an intermediate vertical panel 140, a first lower panel 150, a first upper panel 160, a second lower panel 170, a reinforcing panel 190, a first ear panel 210, a second ear panel 220, a back panel 230 and a second upper panel 180.

[0053] The middle vertical plate 140 is located in the middle position of the supporting legs and is welded to the bottom plate 130. The first lower plate 150, the first upper plate 160, the second lower plate 170, and the second upper plate 180 are respectively welded to the middle vertical plate 140 and the first supporting side plate 110, and the second supporting side plate 120. The angle between the first lower plate 150, the first upper plate 160, the second lower plate 170, and the second upper plate 180 and the middle vertical plate 140 is not less than 15°.

[0054] In this embodiment, the first lower plate 150, the first upper plate 160, the second lower plate 170, and the second upper plate 180 are all separate plates and can be replaced in the following two ways.

[0055] The first lower plate 150 and the first upper plate 160 are integrated into a bent plate, and the second lower plate 170 and the second upper plate 180 are integrated into a bent plate;

[0056] The first lower plate 150, the first upper plate 160, the second lower plate 170, and the second upper plate 180 are replaced by welding multiple steel plates;

[0057] The discharge holes of the first supporting side plate 110 and the second supporting side plate 120 may be in the shape of an elongated strip or a circle.

[0058] The inclination angles of the first lower plate 150 , the first upper plate 160 , the second lower plate 170 , and the second upper plate 180 with respect to the middle vertical plate 140 are less than 15°.

[0059] The reinforcing plate 190 may be welded to the bottom plate 130 by modifying the shape.

[0060] In summary, the beneficial effects of the embodiments of the present application are:

[0061] 1. The first lower plate, the first upper plate, the second lower plate, the second upper plate and the middle vertical plate are welded at an inclination angle of not less than 15°. The inclination angle is easy to adjust, which can increase the sliding amount of goods and reduce the accumulation of goods.

[0062] 2. The supporting legs adopt a welded structure to reduce production difficulty and cost.

[0063] 3. An intermediate vertical plate is arranged in the middle of the supporting leg to improve the structural strength and reliability of the supporting leg.

[0064] 4. Discharge holes are provided on the first supporting side plate and the second supporting side plate, and a discharge port is reserved between the reinforcing plate and the bottom plate. When the supporting oil cylinder is retracted or extended, the goods can be discharged smoothly through the discharge holes and the discharge port to avoid damage to the seal of the supporting oil cylinder by the goods.

[0065] In the embodiments according to the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments according to the present application can be understood according to the specific circumstances.

[0066] In the description of the embodiments of the present application, it needs to be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the present application.

[0067] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example according to the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] The above are only preferred embodiments of the present application and are not intended to limit the embodiments of the present application. For those skilled in the art, various modifications and changes may be made to the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A supporting leg structure, characterized in that: include: A first supporting side plate (110); A second supporting side plate (120) arranged opposite to the first supporting side plate (110); A bottom plate (130) is disposed between the first supporting side plate (110) and the second supporting side plate (120), and is respectively connected to the first supporting side plate (110) and the second supporting side plate (120); an intermediate vertical plate (140), disposed between the first supporting side plate (110) and the second supporting side plate (120), and connected to the bottom plate (130); A first lower plate (150), one end of the first lower plate (150) being connected to the bottom plate (130), and two sides of the first lower plate (150) being respectively connected to the first supporting side plate (110) and the middle vertical plate (140); A first upper plate (160), one end of the first upper plate (160) being connected to an end of the first lower plate (150) away from the bottom plate (130), and two sides of the first upper plate (160) being respectively connected to the first supporting side plate (110) and the middle vertical plate (140); A second lower plate (170), one end of the second lower plate (170) being connected to the bottom plate (130), and two sides of the second lower plate (170) being respectively connected to the second supporting side plate (120) and the middle vertical plate (140); a second upper plate (180), one end of the second upper plate (180) being connected to one end of the second lower plate (170) away from the bottom plate (130), and two sides of the second upper plate (180) being respectively connected to the second supporting side plate (120) and the middle vertical plate (140); A first angle is formed between the first lower plate (150) and the middle vertical plate (140), a second angle is formed between the first upper plate (160) and the middle vertical plate (140), a third angle is formed between the second lower plate (170) and the middle vertical plate (140), and a fourth angle is formed between the second upper plate (180) and the middle vertical plate (140), and the first angle, the second angle, the third angle and the fourth angle are all greater than or equal to 15°.

2. The support leg structure according to claim 1, characterized in that: Also includes: A reinforcing plate (190), wherein two ends of the reinforcing plate (190) are respectively connected to the first end of the first supporting side plate (110) and the first end of the second supporting side plate (120), and a gap is provided between the reinforcing plate (190) and the bottom plate (130).

3. The support leg structure according to claim 1, characterized in that: Also includes: The first ear plate (210) is arranged at a first end of the first supporting side plate (110) and is located on a side of the first supporting side plate (110) close to the second supporting side plate (120).

4. The support leg structure according to claim 3, characterized in that: Also includes: The second ear plate (220) is arranged at the second end of the first supporting side plate (110) and is located on a side of the first supporting side plate (110) close to the second supporting side plate (120).

5. The support leg structure according to claim 4, characterized in that: Also includes: A back plate (230) having one end connected to the bottom plate (130) and the other end connected to the second ear plate (220).

6. The support leg structure according to claim 2, characterized in that: The first supporting side plate (110) is provided with a first discharge hole (112), and the first discharge hole (112) is located between the reinforcing plate (190) and the first lower plate (150); The second supporting side plate (120) is provided with a second discharge hole (122), and the second discharge hole (122) is located between the reinforcing plate (190) and the second lower plate (170).

7. The support leg structure according to claim 6, characterized in that: The first discharge hole (112) is in the shape of an elongated strip or a circle; and / or The second discharge hole (122) is in the shape of an elongated strip or a circle.

8. The support leg structure according to any one of claims 1 to 7, characterized in that: The middle vertical plate (140) is connected to the bottom plate (130) by welding.

9. The support leg structure according to any one of claims 1 to 7, characterized in that: The first lower plate (150) and the first upper plate (160) are respectively welded to the first supporting side plate (110) and the middle vertical plate (140); and / or The second lower plate (170) and the second upper plate (180) are respectively connected to the second supporting side plate (120) and the middle vertical plate (140) by welding.

10. An engineering machine, characterized in that: include: A support leg structure as claimed in any one of claims 1 to 9.

Images