A rear flip hood limiting mechanism and engineering machinery

Abstract

The utility model discloses a rear turnover formula machine cover limiting mechanism and engineering machinery, including rear frame and rear cover, the rear cover sets up the top of rear frame, the rear upper end of rear frame is equipped with hinged support, be equipped with the shaft sleeve on the hinged support, the axial direction of shaft sleeve extends along the left and right direction, the rear lower extreme of rear cover is equipped with hinged lug, be equipped with two hinged holes along the left and right distribution on the hinged lug, two hinged holes are respectively arranged the left and right ends of shaft sleeve, the shaft sleeve with two hinged holes between through the pin shaft hinged, be equipped with the boss on the shaft sleeve, be equipped with the baffle on the hinged lug, the baffle sets up the top between two hinged holes, when the rear cover through the pushing effect of lifting device and turns over to the maximum angle to rear, the baffle with the boss forms the limiting cooperation to restrict the rear cover continue to turn over to rear. The utility model discloses through mechanical limiting structure, restricts the turnover range of rear cover.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a rear-flipping hood limiting mechanism and engineering machinery. Background Technology

[0002] In construction machinery, rear-hinged hoods with electric lifting devices are typically used to facilitate maintenance of the machine's power system (engine, battery, etc.). When maintenance is required, the customer presses the start switch, and the hood rotates around the hinge pin using the electric lifting device. When the electric lifting rail reaches its limit travel, the hood reaches its maximum rotation angle (e.g., 60°). This type of hood relies entirely on the electric lifting device itself for positioning. However, if the operator misoperates, such as operating the machine with the hood open or while it is in motion, the hood's weight, combined with the typically limited strength and pulling force of the electric lifting device, can easily cause it to derail due to inertia or wind resistance, resulting in the hood falling off and endangering the equipment and surrounding personnel. Utility Model Content

[0003] The purpose of this utility model is to provide a rear-flipping hood limiting mechanism and engineering machinery to solve the technical problem in the prior art where, when the driver misoperates, such as when operating the machine with the hood open or while driving, the hood itself is heavy, while the strength and pulling force of the electric lifting device are usually small. Under the action of inertia or wind resistance, the electric lifting device is easily damaged and derailed, causing the hood to fall off, affecting the safety of the equipment and surrounding personnel.

[0004] To achieve the above objectives, the present invention provides a rear-flipping hood limiting mechanism, including a rear frame and a rear cover. The rear cover is positioned above the rear frame. The upper rear end of the rear frame is provided with a hinge support, and a bushing is provided on the hinge support. The bushing extends axially in the left-right direction. The lower rear end of the rear cover is provided with a hinge ear plate, and the hinge ear plate is provided with two hinge holes distributed in the left-right direction. The two hinge holes are respectively located at the left and right ends of the bushing. The bushing and the two hinge holes are hinged by a pin. The bushing is provided with a protrusion, and the hinge ear plate is provided with a baffle plate, which is positioned above the two hinge holes. When the rear cover is flipped to its maximum angle by the pushing action of the lifting device, the baffle plate and the protrusion form a limiting engagement to restrict the rear cover from continuing to flip backward.

[0005] Furthermore, the left and right sides of the upper rear end of the rear frame are respectively provided with the hinge support, and the left and right sides of the lower rear end of the rear cover are respectively provided with the hinge ear plate. The hinge support on the left and right sides is hinged to the hinge ear plate on the left and right sides respectively through the pin.

[0006] Furthermore, the lower rear end of the rear cover is provided with a connecting rod extending from left to right, and the hinged ear plates on the left and right sides are respectively provided at the left and right ends of the connecting rod and extend backward.

[0007] Furthermore, the protrusion is disposed at the upper rear end of the bushing, the two hinge holes are respectively disposed on the left and right sides of the rear end of the hinge ear plate, and the baffle is disposed above the middle part of the hinge ear plate.

[0008] Furthermore, the protrusion is cast into the bushing or welded to the bushing, and the baffle is welded to the hinge lug.

[0009] Furthermore, one end of the hinged support is fixed to the rear frame by a bolt structure, and the other end of the hinged support is provided with the bushing.

[0010] Furthermore, the hinge support extends backward and upward from one end of the hinge support to the other end of the hinge support.

[0011] Furthermore, the lifting device is located in front of the hinge support and the hinge ear plate, and both ends of the lifting device are respectively hinged to the rear frame and the rear cover. The lifting device can push the rear cover to rotate around the pin shaft through telescopic movement.

[0012] Furthermore, the lifting device is located on one side in the left-right direction between the rear frame and the rear cover, and one end of the lifting device is hinged to the inner wall of the rear cover. The lifting device is an electric lifting device.

[0013] This utility model also provides an engineering machinery, including an engineering machinery body, and a rear-flipping hood limiting mechanism as described in any of the above technical solutions, wherein the rear-flipping hood limiting mechanism is disposed on the engineering machinery body.

[0014] In summary, the application of the technical solution of this utility model has the following beneficial effects: The structure design of this utility model is reasonable. (1) By setting a rear frame and a rear cover, the rear cover is set above the rear frame. The rear upper end of the rear frame is provided with a hinge support, and the hinge support is provided with a bushing. The axial direction of the bushing extends in the left and right direction. The rear lower end of the rear cover is provided with a hinge ear plate, and the hinge ear plate is provided with two hinge holes distributed in the left and right directions. The two hinge holes are respectively set at the left and right ends of the bushing. The bushing and the two hinge holes are hinged by a pin. Thus, the rear cover can be flipped back and opened around the pin axis, or it can be flipped forward and closed again around the pin axis after opening. (2) By setting a protrusion on the bushing and a baffle on the hinge ear plate, the baffle is positioned above the two hinge holes. When the rear cover is flipped backward to its maximum angle by the pushing action of the lifting device, the baffle and the protrusion form a limiting engagement to restrict the rear cover from continuing to flip backward. This allows the lifting device to push the rear cover to rotate backward and upward around the pin shaft until the maximum stroke is reached. When the rear cover flips to its maximum angle, the baffle on the hinge ear plate contacts the protrusion on the bushing, forming a mechanical limit to restrict the rear cover from continuing to flip backward. This structure can ensure the maximum flipping accuracy of the rear cover and withstand large torque and impact. Even if the lifting device is damaged, it can ensure that the cover does not easily fall off, playing a safety precaution. As can be seen from the above analysis, this utility model designs a mechanical limiting structure from a safety perspective. Even if the lifting device is damaged, it can have sufficient strength to limit the flipping range of the rear cover (i.e., the flip-back cover) and protect the safety of the machine and surrounding personnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the hinged support and the hinged lug of this utility model when they are separated; Figure 2 This is a schematic diagram of the structure of the hinged support and the hinged lug plate of this utility model when they are engaged. Explanation of reference numerals in the attached drawings: lifting device (1), rear frame (2), articulated support (3), pin (4), rear cover (5); bushing (301), protrusion (302); baffle (501), articulated ear plate (502), articulated hole (503), connecting rod (504). Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0017] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1In this observation, the left side of the observer is designated as front, the right side as rear, the front of the observer as right, the rear of the observer as left, the top of the observer as up, and the bottom of the observer as down. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate the orientation or positional relationship based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0018] See Figures 1 to 2This embodiment provides a rear-flipping hood limiting mechanism, including a rear frame 2 and a rear cover 5. The rear cover 5 is located above the rear frame 2. The rear upper end of the rear frame 2 is provided with a hinge support 3. The hinge support 3 is provided with a bushing 301. The axial direction of the bushing 301 extends in the left and right direction. The rear lower end of the rear cover 5 is provided with a hinge ear plate 502. The hinge ear plate 502 is provided with two hinge holes 503 distributed in the left and right directions. The two hinge holes 503 are respectively located at the left and right ends of the bushing 301. The bushing 301 and the two hinge holes 503 are hinged by a pin 4. The bushing 301 is provided with a protrusion 302. The hinge ear plate 502 is provided with a baffle 501. The baffle 501 is located above the two hinge holes 503. When the rear cover 5 is flipped to the maximum angle by the pushing action of the lifting device 1, the baffle 501 and the protrusion 302 form a limiting engagement to restrict the rear cover 5 from continuing to flip to the rear. Function: (1) By setting a rear frame and a rear cover, the rear cover is set above the rear frame. The rear upper end of the rear frame is provided with a hinge support, and the hinge support is provided with a bushing. The axial direction of the bushing extends in the left and right direction. The rear lower end of the rear cover is provided with a hinge ear plate. The hinge ear plate is provided with two hinge holes distributed in the left and right directions. The two hinge holes are respectively set at the left and right ends of the bushing. The bushing and the two hinge holes are hinged by a pin. Thus, the rear cover can be flipped back and opened around the pin axis, or it can be flipped forward and closed again after being opened. (2) By setting a protrusion on the bushing and a baffle on the hinge ear plate, the baffle is positioned above the two hinge holes. When the rear cover is flipped backward to its maximum angle by the pushing action of the lifting device, the baffle and the protrusion form a limiting engagement to restrict the rear cover from continuing to flip backward. This allows the lifting device to push the rear cover to rotate backward and upward around the pin shaft until the maximum stroke is reached. When the rear cover flips to its maximum angle, the baffle on the hinge ear plate contacts the protrusion on the bushing, forming a mechanical limit to restrict the rear cover from continuing to flip backward. This structure can ensure the maximum flipping accuracy of the rear cover and withstand large torque and impact. Even if the lifting device is damaged, it can ensure that the cover does not easily fall off, playing a safety precaution. As can be seen from the above analysis, this utility model designs a mechanical limiting structure from a safety perspective. Even if the lifting device is damaged, it can have sufficient strength to limit the flipping range of the rear cover (i.e., the flip-back cover) and protect the safety of the machine and surrounding personnel.

[0019] Specifically, hinge supports 3 are provided on the left and right sides of the upper rear end of the rear frame 2, and hinge ear plates 502 are provided on the left and right sides of the lower rear end of the rear cover 5. The hinge supports 3 on the left and right sides are hinged to the hinge ear plates 502 on the left and right sides respectively through pins 4. Function: The rear cover 5 has hinge points on the left and right sides of the lower rear end, so that the rear cover is subjected to balanced force.

[0020] Specifically, the lower rear end of the rear cover 5 is provided with a connecting rod 504 extending left and right, and hinged ear plates 502 on the left and right sides are respectively provided at the left and right ends of the connecting rod 504 and extend rearward. Function: The connecting rod 504 facilitates the arrangement of the hinged ear plates 502 on the left and right sides.

[0021] Specifically, the protrusion 302 is located at the upper rear end of the bushing 301, the two hinge holes 503 are respectively located on the left and right sides of the rear end of the hinge ear plate 502, and the baffle 501 is located above the middle of the hinge ear plate 502. Function: The positional distribution of the protrusion 302, hinge holes 503, and baffle 501 allows the baffle on the hinge ear plate and the protrusion on the bushing to engage in a limiting engagement when the rear cover is flipped to its maximum angle, such as 60°, thus preventing the rear cover from flipping further backward.

[0022] Specifically, the protrusion 302 is cast together with the bushing 301 or welded to the bushing 301, and the baffle 501 is welded to the hinge ear plate 502. Function: The protrusion can be cast together with the bushing or welded to the bushing. Welding a baffle to the hinge ear plate of the rear cover 5 can achieve good fixation.

[0023] Specifically, one end of the articulated support 3 is fixed to the rear frame 2 by a bolt structure, and the other end of the articulated support 3 is provided with a bushing 301. Function: The articulated support 3 is fixed to the rear frame 2 by a bolt structure, which facilitates installation and disassembly.

[0024] Specifically, the hinge support 3 extends backward and upward from one end of the hinge support 3 to the other end of the hinge support 3. Function: This extension of the hinge support 3 facilitates the hinged engagement between the hinge support 3 and the hinge lug 502.

[0025] Specifically, the lifting device 1 is located in front of the hinged support 3 and the hinged ear plate 502. Both ends of the lifting device 1 are hinged to the rear frame 2 and the rear cover 5, respectively. The lifting device 1 can push the rear cover 5 to rotate around the pin 4 through its telescopic movement. Function: The lifting device 1, with both ends hinged to the rear frame 1 and the rear cover 5, facilitates the rear cover 5 to be tilted back and forth. The lifting device uses conventional technology, such as hydraulic cylinders or electric lifting devices, which will not be described in detail here.

[0026] Specifically, the lifting device 1 is located on one side in the left-right direction between the rear frame 2 and the rear cover 5. One end of the lifting device 1 is hinged to the inner wall of the rear cover 5. The lifting device 1 is an electric lifting device. Its function is to allow the rear cover 5 to cover the engine, power battery, etc., and also to facilitate the lifting device 1 being covered by the rear cover. The electric lifting device can be an electric telescopic rod or other electric device, which is conventional technology and will not be elaborated further here.

[0027] This utility model also provides an engineering machinery, including a machinery body and a rear-tilting hood limiting mechanism according to any of the above-mentioned technical solutions. The rear-tilting hood limiting mechanism is disposed on the machinery body. Function: The rear-tilting hood limiting mechanism can be applied to engineering machinery such as electric loaders, forming a rear-tilting hood limiting mechanism for engineering machinery. Preferably, a hood opening button can be provided on the machinery body, so that after pressing the hood opening button, the lifting device 1 pushes the rear cover 5 to rotate around the pin 4 until the maximum stroke is reached.

[0028] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A rear-flipping hood limiting mechanism, comprising a rear frame (2) and a rear hood (5), characterized in that: The rear cover (5) is positioned above the rear frame (2). The rear upper end of the rear frame (2) is provided with a hinge support (3). A bushing (301) is provided on the hinge support (3). The bushing (301) extends axially in the left-right direction. The rear lower end of the rear cover (5) is provided with a hinge ear plate (502). The hinge ear plate (502) has two hinge holes (503) distributed along the left and right sides. The two hinge holes (503) are respectively located at the left and right ends of the bushing (301). 1) Hinged with the two hinge holes (503) by a pin (4); the bushing (301) is provided with a protrusion (302), the hinge ear plate (502) is provided with a baffle (501), the baffle (501) is located above the two hinge holes (503), when the rear cover (5) is flipped to the maximum angle by the pushing action of the lifting device (1), the baffle (501) and the protrusion (302) form a limiting fit to restrict the rear cover (5) from continuing to flip to the rear.

2. The rear-flipping hood limiting mechanism according to claim 1, characterized in that: The rear frame (2) is provided with hinge support (3) on the left and right sides of the upper rear end, and the rear cover (5) is provided with hinge ear plate (502) on the left and right sides of the lower rear end. The hinge support (3) on the left and right sides is hinged to the hinge ear plate (502) on the left and right sides respectively through the pin (4).

3. The rear-flipping hood limiting mechanism according to claim 2, characterized in that: The rear cover (5) has a connecting rod (504) extending from left to right at its lower rear end. The hinged ear plates (502) on the left and right sides are respectively located at the left and right ends of the connecting rod (504) and extend backward.

4. The rear-flipping hood limiting mechanism according to claim 1, characterized in that: The protrusion (302) is located at the upper rear end of the bushing (301), the two hinge holes (503) are respectively located on the left and right sides of the rear end of the hinge ear plate (502), and the baffle (501) is located above the middle part of the hinge ear plate (502).

5. The rear-flipping hood limiting mechanism according to claim 1, characterized in that: The protrusion (302) is cast into the bushing (301) or the protrusion (302) is welded onto the bushing (301), and the baffle (501) is welded onto the hinged ear plate (502).

6. The rear-flipping hood limiting mechanism according to claim 1, characterized in that: One end of the hinge support (3) is fixed to the rear frame (2) by a bolt structure, and the other end of the hinge support (3) is provided with the bushing (301).

7. The rear-flipping hood limiting mechanism according to claim 6, characterized in that: The hinge support (3) extends backward and upward from one end of the hinge support (3) to the other end of the hinge support (3).

8. A rear-flipping hood limiting mechanism according to any one of claims 1 to 7, characterized in that: The lifting device (1) is located in front of the hinge support (3) and the hinge ear plate (502). The two ends of the lifting device (1) are respectively hinged to the rear frame (2) and the rear cover (5). The lifting device (1) can push the rear cover (5) to rotate around the pin (4) through telescopic movement.

9. The rear-flipping hood limiting mechanism according to claim 8, characterized in that: The lifting device (1) is located on one side in the left-right direction between the rear frame (2) and the rear cover (5). One end of the lifting device (1) is hinged to the inner wall of the rear cover (5). The lifting device (1) is an electric lifting device.

10. An engineering machinery, comprising an engineering machinery body, characterized in that: It also includes the rear-flipping hood limiting mechanism as described in any one of claims 1 to 9, wherein the rear-flipping hood limiting mechanism is disposed on the engineering machinery body.

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