Support device, engine compartment and construction machinery

Abstract

The present invention provides a support device, an engine compartment and a construction machinery, relating to the technical field of construction machinery. The support device includes a bracket, a limiting rod and a support rod. The bracket is used to be fixed to the engine compartment body. The bracket has opposite first and second sides. The engine hood is opened from the first side. The limiting rod is slidably connected to the bracket. Two ends of the support rod are respectively used to be rotatably connected to the limiting rod and the engine hood. A locking structure is arranged at one end of the limiting rod close to the first side. The locking structure is used to lock the limiting rod so that the support rod can support the engine hood. The engine compartment includes an engine hood, a compartment body and the support device. The bracket is fixed to the compartment body, and the support rod is rotatably connected to the engine hood. The construction machinery includes an engine compartment. This support device is convenient to unlock so as to facilitate the operator to close the engine hood.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and in particular, to a support device, an engine compartment and a construction machinery. Background Art

[0002] The top cover on the engine compartment of construction machinery such as excavators has a relatively long length. When the engine compartment is opened for maintenance, the support device between the top cover and the cabin body can support the top cover. The support device is provided with a locking structure, and when the locking structure is locked, the support device can stably support the top cover to maintain the open state of the top cover.

[0003] In the prior art, the locking structure is far from the opening side, and it is inconvenient to operate the locking structure to unlock when the top cover needs to be closed. Summary of the Invention

[0004] An object of the present invention is to provide a support device, an engine compartment and a construction machinery, and the support device is convenient to unlock so as to facilitate the closing of the top cover.

[0005] Embodiments of the present invention may be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a support device for supporting an engine top cover, including a bracket, a limiting rod and a support rod. The bracket is used to be fixed to the engine compartment body. The bracket has opposite first and second sides, and the top cover can be opened from the first side. The limiting rod is slidably connected to the bracket. One end of the support rod is rotatably connected to the limiting rod, and the other end is used to be rotatably connected to the top cover. A locking structure is provided at one end of the limiting rod close to the first side. The locking structure is used to lock the position of the limiting rod relative to the bracket so that the support rod can support the top cover.

[0007] In an optional embodiment, the limiting rod is provided with a first chute and a second chute at intervals. The first chute is located on one side of the second chute close to the first side. The bracket is provided with a first pin shaft and a second pin shaft at intervals. The first pin shaft is slidably engaged with the first chute, and the second pin shaft is slidably engaged with the second chute.

[0008] In an optional embodiment, the first side and the second side are spaced apart and opposite along a preset direction, the first pin shaft and the second pin shaft are spaced apart along the preset direction, and the first chute and the second chute respectively extend along the preset direction.

[0009] In an optional embodiment, the lengths of the first chute and the second chute are equal.

[0010] In an optional embodiment, the locking structure includes a locking groove. The first end of the locking groove communicates with one end of the first chute close to the first side. The second end of the locking groove far from the first end is located below the first chute. When the first pin shaft enters the locking groove, the locking groove can catch the first pin shaft.

[0011] In an alternative embodiment, the minimum distance between the projection of the second end on the first chute and the first end is greater than the diameter of the first pin shaft and less than the length of the second chute.

[0012] In an alternative embodiment, the locking groove includes a curved hook groove, the hook groove has a first end and a second end, and the hook groove protrudes toward the direction close to the first side.

[0013] In an alternative embodiment, the support rod is rotatably connected to one end of the limit rod close to the second side.

[0014] In a second aspect, an embodiment of the present invention provides an engine compartment, including an engine hood, a cabin body, and the support device according to any one of the foregoing embodiments. The engine hood is rotatably connected to the cabin body, the bracket is fixed to the cabin body, and the support rod is rotatably connected to the engine hood.

[0015] In a third aspect, an embodiment of the present invention provides a construction machinery, including the engine compartment in the foregoing embodiment.

[0016] The beneficial effects of the embodiments of the present invention include:

[0017] The support device includes a bracket, a limit rod, and a support rod. The bracket is used to be fixed to the engine compartment body. The bracket has opposite first and second sides. The engine hood is opened from the first side. The limit rod is slidably connected to the bracket. The two ends of the support rod are respectively used to be rotatably connected to the limit rod and the engine hood. A locking structure is provided at one end of the limit rod close to the first side. The locking structure is used to lock the limit rod so that the support rod can support the engine hood. The engine compartment includes an engine hood, a cabin body, and a support device. The bracket is fixed to the cabin body, and the support rod is rotatably connected to the engine hood. The construction machinery includes an engine compartment. When the engine hood is opened, the support rod drives the limit rod to move relative to the bracket, and then the locking structure is used to lock the position of the limit rod, so that the support rod stably supports the engine hood. When the engine hood is closed, it is only necessary to unlock the locking structure from the opening side of the engine hood, that is, the first side. Since the locking structure is arranged at a position close to the first side, the operator can easily reach it, which is convenient for the operator to operate and ensures the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the support device when the engine hood is closed in the embodiment of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the support device during the opening process of the engine top cover in an embodiment of the present invention;

[0021] Figure 3 In an embodiment of the present invention Figure 2 An enlarged view of part A;

[0022] Figure 4 This is a schematic structural diagram of the support device when the limit rod is locked after the engine top cover is opened in an embodiment of the present invention;

[0023] Figure 5 In an embodiment of the present invention Figure 4 An enlarged view of part B.

[0024] Reference numerals: 100 - support device; 110 - bracket; 111 - first side; 112 - second side; 113 - first pin shaft; 114 - second pin shaft; 130 - limit rod; 131 - first chute; 132 - locking structure; 133 - second chute; 134 - locking groove; 135 - hook groove; 136 - first end; 137 - second end; 150 - support rod; 200 - engine top cover. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0029] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0031] In the prior art, the support devices adopted include two major categories: one is a telescopic rod, which is composed of multiple sections of rods. When opening the engine top cover, it is locked through a locking structure arranged between adjacent rods, so that the support device can stably support the engine top cover; the other is a folding rod, which is composed of two rods that can rotate relative to each other. When the folding rod is straightened, it is locked through the locking structure 132 between the two rods, so that the support device can stably support the engine top cover. The locking structures of the above support devices are all arranged between adjacent rods in the support device. And in order to improve the support ability and minimize the occupied space of the support device, when the engine top cover is opened, the entire support device will be closer to the hinge position of the engine top cover. However, the operator is usually located on the opening side of the engine top cover. Therefore, after opening, the locking structure in the support device is far from the operator. When it is necessary to unlock the locking structure to close the engine top cover subsequently, the operator needs to reach out or stretch his foot with effort to unlock the locking structure. Especially when the operator stands on the vehicle body, it is easy to make the operator lose his balance and cause accidents such as falling and getting injured.

[0032] To improve the above problems, please refer to Figure 1 and Figure 2 In this embodiment, a construction machinery is provided, which includes an engine compartment. The engine compartment includes an engine top cover 200, a cabin body, and a support device 100. The engine top cover 200 is rotatably connected to the cabin body. Specifically, the engine top cover 200 is hinged to the cabin body through a hinge. A bracket 110 is fixed to the cabin body, and the support device 100 is used to support the engine top cover 200 to maintain the open state of the engine top cover 200.

[0033] The support device 100 includes a bracket 110, a limiting rod 130, and a support rod 150. The bracket 110 is used to be fixed to the engine compartment body. The bracket 110 has opposite first side 111 and second side 112. The first side 111 and the second side 112 are spaced apart and opposite along a preset direction. In this embodiment, the preset direction is the front-rear direction, the first side 111 is the front side, and the second side 112 is the rear side. The engine hood 200 can be opened from the first side 111, that is, the operator opens the engine hood 200 from the front side. The bracket 110 is provided with a first pin shaft 113 and a second pin shaft 114 at intervals. In this embodiment, the first pin shaft 113 and the second pin shaft 114 are spaced apart along the preset direction. Both the first pin shaft 113 and the second pin shaft 114 extend along the horizontal direction and are perpendicular to the vertical surface of the bracket 110.

[0034] The limiting rod 130 is slidably connected to the bracket 110. One end of the support rod 150 is rotatably connected to the limiting rod 130, and the other end is used to be rotatably connected to the engine hood 200. A locking structure 132 is provided at one end of the limiting rod 130 close to the first side 111. The locking structure 132 is used to lock the position of the limiting rod 130 relative to the bracket 110 so that the support rod 150 can support the engine hood 200.

[0035] Wherein, the limiting rod 130 is provided with a first sliding groove 131 and a second sliding groove 133 at intervals. The lengths of the first sliding groove 131 and the second sliding groove 133 are equal. The first sliding groove 131 is located on the side of the second sliding groove 133 close to the first side 111, that is, the first sliding groove 131 is in the front and the second sliding groove 133 is in the rear. The first pin shaft 113 is slidably matched with the first sliding groove 131, and the second pin shaft 114 is slidably matched with the second sliding groove 133, so that the limiting rod 130 can have a sliding stroke with a certain length relative to the bracket 110. In this embodiment, the first sliding groove 131 and the second sliding groove 133 respectively extend along the preset direction, so that the limiting rod 130 can only move relative to the bracket 110 along the preset direction. And, in this embodiment, the length direction of the limiting rod 130 is parallel to the preset direction, so that the limiting rod 130 can be as close as possible to the opening side during sliding to facilitate the operator to reach the limiting rod 130 and operate the locking structure 132 provided thereon. In other embodiments, the length of the second sliding groove 133 can also be greater than that of the first sliding groove 131.

[0036] In this embodiment, the limiting rod 130 slides along the preset direction, that is, the front-rear direction. It can be understood that in other embodiments, the limiting rod 130 may not slide along the preset direction. At this time, the first sliding groove 131 and the second sliding groove 133 may not extend along the preset direction, but form an angle with the preset direction. Because in essence, it is only required that the limiting rod 130 can move relatively closer to or farther from the first side 111 to facilitate the operator to reach, rather than necessarily requiring its sliding direction to be the front-rear direction.

[0037] Please refer to Figure 3 , Figure 4 and Figure 5 , the locking structure 132 includes a locking groove 134. The first end 136 of the locking groove 134 communicates with one end of the first sliding groove 131 close to the first side 111, and the second end 137 of the locking groove 134 away from the first end 136 is located below the first sliding groove 131. After the first pin shaft 113 enters the locking groove 134, the locking groove 134 can hold the first pin shaft 113.

[0038] Specifically, the locking groove 134 includes a curved hook groove 135, and the hook groove 135 has a first end 136 and a second end 137. The first end 136 communicates with one end of the first sliding groove 131 close to the first side 111, the second end 137 is located below the first sliding groove 131, and the hook groove 135 bulges towards the direction close to the first side 111. The hook groove 135 and the first sliding groove 131 together form a J-shaped groove. The minimum distance between the projection of the second end 137 on the first sliding groove 131 and the first end 136 is greater than the diameter of the first pin shaft 113, so that the first pin shaft 113 will not easily break away after sliding into the second end 137 of the hook groove 135. At the same time, the minimum distance between the projection of the second end 137 on the first sliding groove 131 and the first end 136 is less than the length of the second sliding groove 133, that is, less than the length of the first sliding groove 131 so that the second end 137 can be located below the first sliding groove 131. Since the minimum distance between the projection of the second end 137 of the hook groove 135 on the first sliding groove 131 and the first end 136 is less than the length of the second sliding groove 133, when the first pin shaft 113 slides from the first sliding groove 131 into the hook groove 135, if the limiting rod 130 has a tendency to move forward, the inner wall of the hook groove 135 at the second end 137 will stop the first pin shaft 113 to prevent the limiting rod 130 from moving forward. Thus, the hook groove 135 can limit the first pin shaft 113, and further limit the limiting rod 130.

[0039] In this embodiment, the locking groove 134 and the first sliding groove 131 together are J-shaped. In other embodiments, the locking groove 134 can also be a straight groove. At this time, an included angle is formed between the locking groove 134 and the first sliding groove 131, and the distance between the projection of the second end 137 of the locking groove 134 on the first sliding groove 131 and the first end 136 is greater than the diameter of the first pin shaft 113 and less than the length of the second sliding groove 133. Therefore, even if the locking groove 134 is straight, the first pin shaft 113 can be limited.

[0040] The support rod 150 is rotatably connected to the top cover 200. In this embodiment, one side of the top cover 200 close to the second side 112 is hinged to the cabin body, and both ends of the support rod 150 are respectively hinged to the limit rod 130 and the top cover 200. When the top cover 200 is opened or closed, the support rod 150 can rotate relative to the top cover 200 and the limit rod 130. The support rod 150 is rotatably connected to one end of the limit rod 130 close to the second side 112, so that there is no redundant part of the limit rod 130. When the support rod 150 and the limit rod 130 are folded with each other when the top cover 200 is closed, the limit rod 130 will not occupy extra space, avoiding interfering with other components.

[0041] In addition, in this embodiment, the support rod 150 and the limit rod 130 are set to appropriate lengths. When the top cover 200 is closed, the length directions of the support rod 150 and the limit rod 130 are respectively parallel to the preset directions, and the included angle between the support rod 150 and the limit rod 130 is 180°. Therefore, when the top cover 200 is closed, the occupied space of the support rod 150 and the limit rod 130 can be effectively reduced, avoiding interference or obstruction to other components.

[0042] In this embodiment, the bracket 110 is provided with a pin shaft, and the limit rod 130 is provided with a chute. In other embodiments, it can also be that the limit rod 130 is provided with a pin shaft and the bracket 110 is provided with a chute, which can also meet the sliding requirement of the limit rod 130. At this time, the bracket 110 is provided with a first chute 131, a second chute 133 and a locking groove 134. The locking groove 134 communicates with the first chute 131 and is located above the first chute 131. The limit rod 130 is provided with a first pin shaft 113 and a second pin shaft 114. When one end of the limit rod 130 close to the first side 111 is upturned, the first pin shaft 113 can enter the locking groove 134 from the first chute 131, and a limiting member can be additionally arranged in the locking groove 134 to limit the first pin shaft 113, so as to realize the locking of the limit rod 130.

[0043] The working principle and working process of the support device 100 are as follows:

[0044] When opening the top cover 200, the operator opens the top cover 200 from the first side 111, i.e., the front side, and the top cover 200 rotates relative to the bracket 110. The support rod 150 rotates along with the top cover 200 and drives the limit rod 130 to slide toward the second side 112, i.e., the rear side. The second slide groove 133 and the first slide groove 131 are of equal length. When the second pin shaft 114 abuts against the inner wall of the second slide groove 133 close to the first side 111, the first pin shaft 113 abuts against the inner wall of the first slide groove 131 close to the first side 111. At this time, the operator puts down the top cover 200 so that the top cover 200 presses down the end of the limit rod 130 away from the first side 111 through the support rod 150, so that the end of the limit rod 130 close to the first side 111 is tilted up. Since the first end 136 of the hook groove 135 is connected with the end of the first slide groove 131 close to the front side, when the end of the limit rod 130 close to the first side 111 is tilted up, the first pin 113 can slide into the hook groove 135. The hook groove 135 is convex and curved toward the front as a whole. After the first pin 113 slides into the hook groove 135, it slides along the extension direction of the hook groove 135 to the second end 137 of the hook groove 135. Due to the effect of gravity, the top cover 200 also generates a component force toward the front side on the limit rod 130 through the support rod 150, so that the limit rod 130 always has a tendency to slide forward relative to the first pin 113. Since the minimum distance between the projection of the second end 137 of the hook groove 135 on the first slide groove 131 and the first end 136 is smaller than the length of the second slide groove 133, the first pin shaft 113 will be stopped by the inner wall of the second end 137 of the hook groove 135 to prevent the limit rod 130 from sliding forward. The minimum distance between the projection of the second end 137 of the hook groove 135 on the first slide groove 131 and the first end 136 is larger than the diameter of the first pin shaft 113, so that the first pin shaft 113 will not be easily separated from the hook groove 135, and the limit rod 130 is locked through the locking groove 134. After the limit rod 130 is locked, under the pressure of the top cover 200, the support rod 150 is relatively fixed, thereby stably supporting the top cover 200 and maintaining the open state of the top cover 200.

[0045] When closing the top cover 200, the operator can push and press the end of the limit rod 130 close to the first side 111 backward, so that the first pin shaft 113 disengages from the hook groove 135 and then slides into the first slide groove 131, and the limit rod 130 can slide forward relative to the bracket 110, and the support rod 150 rotates accordingly, pulling the top cover 200 to rotate relative to the bracket 110, so as to achieve closing. Since the locking groove 134 is arranged at the end of the limit rod 130 close to the first side 111, that is, the locking groove 134 is arranged at the end close to the opening side, it is close to the operator, which is convenient for the operator to reach, and then convenient for the operator to unlock and close the top cover 200.

[0046] In summary, by arranging the locking structure 132 at one end of the limiting rod 130 close to the first side 111, the supporting device 100 facilitates the unlocking by the operator, which is conducive to improving the operation safety. At the same time, the supporting device 100 has a simple structure, is easy to operate, and occupies a small space.

[0047] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A support device for supporting the engine top cover, characterized in that, it includes a bracket, a limiting rod and a support rod. The bracket is used to be fixed to the engine compartment body. The bracket has opposite first and second sides, and the top cover can be opened from the first side; the limiting rod is slidably connected to the bracket, one end of the support rod is rotatably connected to the limiting rod, and the other end is used to be rotatably connected to the top cover; a locking structure is provided at one end of the limiting rod close to the first side, and the locking structure is used to lock the position of the limiting rod relative to the bracket so that the support rod can support the top cover; the limiting rod is provided with a first chute and a second chute at intervals. The first chute is located on one side of the second chute close to the first side. The bracket is provided with a first pin shaft and a second pin shaft at intervals. The first pin shaft is slidably matched with the first chute, and the second pin shaft is slidably matched with the second chute; the locking structure includes a locking groove. The first end of the locking groove communicates with one end of the first chute close to the first side. The second end of the locking groove far from the first end is located below the first chute. When the first pin shaft enters the locking groove, the locking groove can catch the first pin shaft.

2. The support device according to claim 1, characterized in that, the first side and the second side are spaced apart and opposite along a preset direction. The first pin shaft and the second pin shaft are spaced apart along the preset direction. The first chute and the second chute extend along the preset direction respectively.

3. The support device according to claim 2, characterized in that, the first chute and the second chute have equal lengths.

4. The support device according to claim 1, characterized in that, the minimum distance between the projection of the second end on the first chute and the first end is greater than the diameter of the first pin shaft and less than the length of the second chute.

5. The support device according to claim 4, characterized in that, the locking groove includes a curved hook groove, the hook groove has the first end and the second end, and the hook groove protrudes towards the direction close to the first side.

6. The support device according to claim 1, characterized in that, the support rod is rotatably connected to one end of the limiting rod close to the second side.

7. An engine compartment, characterized in that, it includes a top cover, a compartment body and the support device according to any one of claims 1-6. The top cover is rotatably connected to the compartment body, the bracket is fixed to the compartment body, and the support rod is rotatably connected to the top cover.

8. An engineering machinery, characterized in that, it includes the engine compartment according to claim 7.

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