Emergency door opening device and engineering machinery

Abstract

The utility model relates to the technical field of engineering machinery, and discloses an emergency door opening device and engineering machinery. The emergency door opening device comprises a vehicle door with a first through hole; the hinge is arranged on the outer side of the vehicle door; one end of the connecting piece penetrates through the first through hole from the inner side of the automobile door and is in threaded connection with the hinge; the handle is arranged on the inner side of the automobile door and rotatably connected to the other end of the connecting piece, and when the handle is in a locked state, the handle rotates around the first rotating axis to abut against the automobile door; when the handle is in an emergency state, the handle rotates around the first rotating axis to a preset angle and then rotates around the second rotating axis together with the connecting piece. In the normal state, the handle is in the locking state, the hinge is locked on the automobile door through the handle, the normal function of the hinge is guaranteed, in the emergency situation, a driver screws the handle to drive the connecting piece to rotate, the connecting piece is separated from the hinge, then the automobile door is separated from the hinge, the whole automobile door can be opened, and the automobile door can be rapidly separated from an automobile body.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to an emergency door opening device and engineering machinery. Background Technology

[0002] Due to the unique operating conditions of construction machinery, the safety of the cab has always been a primary design concern. In the event of an accident, rescue personnel typically need to assist the driver in escaping from outside the cab. However, the arrival time for rescuers can be time-consuming, potentially causing the driver to miss the optimal escape window, posing a significant risk to their personal safety. Therefore, an emergency device is needed to allow the doors to be quickly opened from inside the cab, thus addressing these issues to some extent.

[0003] Currently, the cab of construction machinery consists of a frame and a door. The door is generally connected to the frame by hinges and a door lock. The hinges and door lock work together to fix the door. The hinges are either welded or bolted together. If the door lock is deformed in an accident, the driver will not be able to open the door quickly from the inside, which will prevent the driver from escaping in time and poses a high risk to personal safety. Utility Model Content

[0004] In view of this, the present invention provides an emergency door opening device and engineering machinery to solve the problem that the driver cannot quickly open the car door from the inside after the door lock is deformed in the event of an accident.

[0005] In a first aspect, this utility model provides an emergency door opening device, comprising: a vehicle door having a first through hole; a hinge disposed on the outer side of the vehicle door; a connector having one end threadedly connected to the hinge through the first through hole from the inner side of the vehicle door; and a handle disposed on the inner side of the vehicle door, the handle being rotatably connected to the other end of the connector. The handle has a first rotation axis that rotates relative to the connector and a second rotation axis that rotates together with the connector. The first rotation axis is perpendicular to the second rotation axis. The handle has a locked state and an emergency state. When the handle is in the locked state, the handle rotates around the first rotation axis until it abuts against the vehicle door to lock the hinge onto the vehicle door. When the handle is in the emergency state, the handle rotates around the first rotation axis to a preset angle and then rotates together with the connector around the second rotation axis to separate the connector from the hinge.

[0006] Beneficial effects: Under normal conditions, the handle is locked, which can lock the hinge to the door and ensure the normal function of the hinge. In an emergency, the driver can turn the handle, which will cause the connecting part to rotate, causing the connecting part to separate from the hinge, and thus the door to separate from the hinge. This allows the entire door to be opened, enabling the door to quickly detach from the vehicle body and the driver to escape from the driver's seat quickly, effectively reducing the risk to the driver's personal safety in emergency situations.

[0007] In an alternative embodiment, the handle comprises a handle body and a connecting part, the connecting part is rotatably connected to the other end of the connecting member, when the handle is in the locked state, the connecting part abuts against the door, and a gap is formed between the handle body and the door.

[0008] Beneficial effects: through the gap between the handle body and the door, the operator can easily hold and rotate the handle, reducing the operation difficulty.

[0009] In an alternative embodiment, the connecting part is an eccentric cam structure.

[0010] Beneficial effects: once the eccentric cam structure is rotated to the appropriate position, it will continuously exert pressure, even if it encounters vibration or impact during driving, it can maintain a stable locked state, ensuring that it will not easily loosen in the locked state.

[0011] In an alternative embodiment, the part of the door corresponding to the connecting part is provided with a first flexible pad, the first flexible pad is sleeved on the connecting member, and when the handle is in the locked state, the connecting part compresses the first flexible pad.

[0012] Beneficial effects: the setting of the first flexible pad can protect the door, avoiding the situation that the handle contacts the door to scratch or wear the door.

[0013] In an alternative embodiment, the emergency door opening device further comprises a limiting member, the limiting member is fixed on the outer side of the door, and the hinge is limited on the limiting member.

[0014] Beneficial effects: by limiting the position of the hinge through the limiting member, the transverse shaking of the door in the transverse direction of the vehicle body can be limited, ensuring the normal function of the hinge.

[0015] In an alternative embodiment, a limiting groove is formed on the side of the limiting member away from the door, the extending direction of the limiting groove is perpendicular to the rotation axis of the hinge, the hinge has an embedding part embedded in the limiting groove, and a connecting hole matched with the connecting member is formed on the embedding part.

[0016] Beneficial effects: the structure of the limiting groove is simple and easy to realize.

[0017] In an alternative embodiment, the emergency door opening device further comprises a fixing member, the fixing member is arranged on the inner side of the door, and the fixing member and the limiting member are fixed on the door through fastening components, and the handle abuts against the fixing member when the handle is in the locked state.

[0018] Beneficial effects: the handle does not directly contact the door, reducing the risk of scratching or wearing the door caused by direct friction between the handle and the door, which helps to maintain the appearance of the door. The fastening component is used to fix the limiting member, which is easy to install and disassemble, improving the assembly efficiency.

[0019] In one alternative embodiment, a second flexible pad is provided between the fastener and the door, and between the limiting member and the door.

[0020] Beneficial effects: The second flexible pad can protect the door and prevent the fixing and limiting parts from contacting the door and causing scratches or wear.

[0021] In one alternative embodiment, a fixing nut is welded to the side of the hinge away from the door, and one end of the connector is threadedly connected to the fixing nut.

[0022] Beneficial effects: Because hinges are relatively thin, it is not easy to make threaded holes on them. In order to facilitate connection with connectors, fixing nuts are made on the hinges, thereby ensuring the stability and reliability of the hinges under normal use.

[0023] Secondly, this utility model also provides an engineering machinery, including: a vehicle body; the aforementioned emergency door opening device, wherein the hinge of the emergency door opening device is connected to the vehicle body. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a perspective view of an emergency door opening device according to an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 Exploded view of the emergency door opening device shown;

[0027] Figure 3 for Figure 1 A perspective view of the emergency door opening device with the handle and connector pulled out;

[0028] Figure 4 for Figure 1 The diagram shows a 3D view of the handle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Car door; 101. First through hole; 102. Second through hole;

[0031] 2. Hinge; 201. Embedded part;

[0032] 3. Connectors;

[0033] 4, handle; 401, handle body; 402, connecting part;

[0034] 5, limiting member; 501, limiting groove;

[0035] 6, fastening component; 601, fastening bolt; 602, fastening nut;

[0036] 7, fixing member;

[0037] 8, first flexible pad;

[0038] 9, fixing nut;

[0039] 10, handle bolt;

[0040] 11, handle nut;

[0041] 12, second flexible pad. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0043] The embodiments of the present application will be described below in combination with Figures 1 to 4 The embodiments of the present application will be described below in combination with

[0044] According to the embodiments of the present application, on the one hand, an emergency door opening device is provided, which comprises a door 1, a hinge 2, a connecting member 3 and a handle 4. The door 1 has a first through hole 101, and the hinge 2 is arranged on the outer side of the door 1. One end of the connecting member 3 passes through the first through hole 101 from the inner side of the door 1 and is threadedly connected with the hinge 2. The handle 4 is arranged on the inner side of the door 1, and the handle is rotatably connected to the other end of the connecting member. The handle has a first rotation axis that rotates relative to the connecting member and a second rotation axis that rotates together with the connecting member. The first rotation axis is perpendicular to the second rotation axis. The handle has a locked state and an emergency state. When the handle is in the locked state, the handle rotates around the first rotation axis to abut against the door, so as to lock the hinge on the door. When the handle is in the emergency state, the handle rotates around the first rotation axis to a preset angle and then rotates together with the connecting member around the second rotation axis, so as to separate the connecting member from the hinge.

[0045] The emergency door opening device of the embodiment can keep the handle 4 in the locked state in normal state, and the handle 4 can lock the hinge 2 on the vehicle door 1 to ensure the normal function of the hinge 2. In an emergency, the driver can rotate the handle 4 to drive the connecting piece 3 to rotate, so that the connecting piece 3 is separated from the hinge 2, and then the vehicle door 1 is separated from the hinge 2, and the whole vehicle door 1 can be opened, so that the vehicle door 1 is quickly separated from the vehicle body, the driver can quickly escape from the cab, and the risk of personal safety of the driver in an emergency is effectively reduced. The handle 4 is rotatably arranged to reliably abut against the vehicle door 1 in the locked state, so that the handle 4 cannot be easily loosened in the locked state, and the reliability and stability of the handle 4 in the normal state are improved.

[0046] In one embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the handle 4 includes a handle body 401 and a connecting part 402, the connecting part 402 is rotatably connected to the other end of the connecting piece 3, and the connecting part 402 abuts against the vehicle door 1 when the handle 4 is in the locked state. There is a gap between the handle body 401 and the vehicle door 1. Through the gap between the handle body 401 and the vehicle door 1, the operator can easily hold the handle and rotate it, reducing the operation difficulty.

[0047] Further, the connecting part 402 is an eccentric cam structure. Once the eccentric cam structure is rotated to the appropriate position, it can maintain a stable locking state even if vibration or impact is encountered during driving, ensuring that it cannot be easily loosened in the locked state.

[0048] Specifically, the connecting piece 3 is a pin shaft, one end of the pin shaft is provided with external threads, and the second rotation axis is the axis of the pin shaft. The handle 4 is fastened on the pin shaft through the handle bolt 10 and the handle nut 11.

[0049] In one embodiment, as shown in Figure 1 , Figure 2 and Figure 4 , the part of the vehicle door 1 corresponding to the connecting part 402 is provided with a first flexible pad 8, the first flexible pad 8 is sleeved on the connecting piece 3, and the connecting part 402 compresses the first flexible pad 8 when the handle 4 is in the locked state. The handle 4 can rotate around the first rotation axis. When there is a gap between the eccentric cam structure and the first flexible pad 8, the eccentric cam structure does not exert force on the first flexible pad 8. When the handle 4 is rotated to contact the first flexible pad 8, the eccentric cam structure compresses the first flexible pad 8 to lock the hinge 2 on the vehicle door 1. The first flexible pad 8 can protect the vehicle door 1, avoiding the situation that the handle 4 contacts the vehicle door 1 to scratch or wear the vehicle door 1.

[0050] Further, the first flexible pad 8 is made of nylon or the like, which has good mechanical strength, wear resistance, corrosion resistance and certain elasticity.

[0051] In one embodiment, as shown in Figure 1 and Figure 2 The emergency door opening device further comprises a limiting member 5 fixed on the outer side of the door 1, and the hinge 2 is limited on the limiting member 5. The position of the hinge 2 is limited by the limiting member 5, thereby limiting the lateral shaking of the door 1 in the lateral direction of the vehicle body, and ensuring the normal function of the hinge 2.

[0052] Further, a limiting groove 501 is formed on the side of the limiting member 5 away from the door 1, the extending direction of the limiting groove 501 is perpendicular to the rotation axis of the hinge 2, the hinge 2 has an embedded part 201 embedded in the limiting groove 501, and a connecting hole is formed on the embedded part 201 and matched with the connecting member 3. In the vertical direction of the vehicle body, the hinge 2 bears the weight load of the door 1, and in the lateral direction of the vehicle body, the lateral shaking of the door 1 is limited, thereby improving the stability and reliability of the door 1. The structure of the limiting groove 501 is simple and easy to realize.

[0053] In one embodiment, as shown in Figure 2 The emergency door opening device further comprises a fixing member 7 arranged on the inner side of the door 1, the fixing member 7 and the limiting member 5 are fixed on the door 1 by the fastening member 6, and the handle 4 abuts against the fixing member 7 when the handle 4 is in the locked state. The handle 4 does not directly contact the door 1, thereby reducing the risk of scratching or wearing the door 1 caused by the direct friction between the handle 4 and the door 1, and helping to maintain the appearance of the door 1. The fastening member is used to fix the limiting member 5, which is easy to install and disassemble, thereby improving the assembly efficiency.

[0054] Specifically, the fixing member 7 and the limiting member 5 are both processed by a plate material, at this time, the fixing member 7 can be called a fixing plate, and the limiting member 5 can be called a limiting plate.

[0055] Further, the fastening member 6 comprises a fastening bolt 601 and a fastening nut 602, the fastening bolt 601 passes through the limiting member 5, the second through hole 102 of the door 1, and is connected with the fastening nut 602.

[0056] It can be understood that in another embodiment, the fixing member 7 can also not be arranged.

[0057] In one embodiment, as shown in Figure 2 The second flexible pad 12 is arranged between the fixing member 7 and the door 1, and between the limiting member 5 and the door 1. The arrangement of the second flexible pad 12 can protect the door 1, thereby avoiding the situation that the fixing member 7 and the limiting member 5 contact the door 1 to scratch or wear the door 1.

[0058] Further, the second flexible pad 12 is made of rubber or the like, which has good elasticity, recovery, wear resistance and other advantages.

[0059] In one embodiment, as shown in Figure 1 the fixed nut 9 is welded on the side of the hinge 2 away from the door 1, and one end of the connecting piece 3 is threadedly connected with the fixed nut 9. Since the thickness of the hinge 2 is relatively thin, it is not easy to set a threaded hole on the hinge 2, in order to facilitate the connection with the connecting piece 3, the fixed nut 9 is arranged on the hinge 2, thereby ensuring the stability and reliability of the hinge 2 in the normal use state.

[0060] Further, the fixed nut 9 is welded on the hinge 2, and the fixed nut 9 is fixed on the hinge 2 by welding, which can effectively avoid the problem of nut loosening caused by vibration or other external forces, and improve the structural stability.

[0061] Specifically, when the handle 4 is in the locked state, the handle 4 is arranged in the vertical direction. After the handle 4 is assembled, the handle 4 is in the locked state by being pressed downward, in an emergency, after lifting the handle 4, the handle 4 is screwed around the second rotation axis, the handle 4 drives the pin shaft to rotate, the pin shaft is separated from the fixed nut 9, so that the door 1 is separated from the hinge 2, and then the door 1 can be opened entirely, realizing the effect of rapid separation of the door 1 from the vehicle body.

[0062] It can be understood that in another embodiment, the fixed nut 9 can also not be arranged, and the connecting hole on the hinge 2 is a threaded hole, at this time the thickness of the hinge 2 needs to meet certain requirements.

[0063] According to the embodiment of the utility model, on the other hand, an engineering machinery is also provided, comprising: a vehicle body and an emergency door opening device, the hinge 2 of the emergency door opening device is connected with the vehicle body.

[0064] Further, the hinge 2 comprises a first leaf plate, a second leaf plate and a connecting shaft, the fixed nut 9 is fixed on the first leaf plate, the second leaf plate is fixed on the vehicle body, and the first leaf plate and the second leaf plate are connected through the connecting shaft.

[0065] Specifically, the engineering machinery comprises a cab, the cab comprises a door 1 and a frame, and the door 1 is fixed on the frame through the hinge 2. The engineering machinery includes but is not limited to excavators, cranes, pile machines, mixers and the like.

[0066] In one embodiment, the door 1 comprises a door body and a glass window, the glass window is arranged on the door body, and the hinge 2 can be arranged on the glass window or the door body.

[0067] Further, when the hinge 2 is arranged on the glass window, the first through hole 101 and the second through hole 102 are arranged on the glass plate of the glass window, the two second flexible pads 12 are directly contacted with the glass plate, the upper and lower second through holes 102 are connected and fixed with the limiting plate and the fixed plate by the two fastening bolts 601 and the fastening nuts 602 respectively, the limiting recess 501 is arranged on the limiting plate, the limiting recess 501 can embed and install the hinge 2, then the handle 4 is connected with the hinge 2 by using the pin shaft, the handle bolt 10 and the handle nut 11 are used between the handle 4 and the pin shaft to fasten. The hinge 2 is connected with the handle 4 by using a pin shaft, the structure is simple, and the handle 4 is easy to realize. When the handle 4 is closed downward, the sealing effect of the vehicle door 1 can be good. After the handle 4 is opened upward, the handle is rotated to make the pin shaft and the hinge 2 separated, so that the vehicle door 1 and the vehicle body are separated. The handle 4 can be operated conveniently when being opened and closed, and the rotation is smooth. The handle 4 can be operated in the cab to separate the vehicle door 1 and the vehicle body quickly, so that the vehicle door 1 can be opened quickly in the cab, and the driver can escape quickly in an emergency, so that the problem that the vehicle door 1 cannot be separated from the vehicle body quickly when the cab is deformed or on fire, and the personnel cannot escape in time can be solved to a certain extent.

[0068] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. An emergency door opening device, characterized in that The application relates to an emergency door opening device. The device comprises: a door (1) having a first through hole (101); a hinge (2) arranged on the outer side of the door (1); a connecting piece (3) having one end penetrating the first through hole (101) from the inner side of the door (1) and being screwed with the hinge (2); 2. The emergency door opener of claim 1, wherein a handle (4) arranged on the inner side of the door (1), the handle (4) being rotatably connected with the other end of the connecting piece (3), the handle (4) having a first rotation axis for rotating relative to the connecting piece (3) and a second rotation axis for rotating together with the connecting piece (3), the first rotation axis being perpendicular to the second rotation axis, the handle (4) having a locking state and an emergency state, when the handle (4) is in the locking state, the handle (4) is rotated around the first rotation axis to abut against the door (1) to lock the hinge (2) on the door (1), when the handle (4) is in the emergency state, the handle (4) is rotated around the first rotation axis to a preset angle and then rotates around the second rotation axis together with the connecting piece (3) to separate the connecting piece (3) from the hinge (2).

3. The emergency door opener of claim 2, wherein The handle (4) comprises a handle body (401) and a connecting part (402), the connecting part (402) is rotatably connected with the other end of the connecting piece (3), when the handle (4) is in the locking state, the connecting part (402) abuts against the door (1), and a gap is formed between the handle body (401) and the door (1).

4. The emergency door opener of claim 2, wherein The connecting part (402) is an eccentric cam structure.

5. The emergency door opener according to any one of claims 1 to 4, characterized in that The door (1) is provided with a first flexible pad (8) corresponding to the connecting part (402), the first flexible pad (8) is sleeved on the connecting piece (3), and when the handle (4) is in the locking state, the connecting part (402) compresses the first flexible pad (8).

6. The emergency door opener of claim 5, wherein The emergency door opening device further comprises a limiting piece (5) fixed on the outer side of the door (1), and the hinge (2) is limited on the limiting piece (5).

7. The emergency door opener of claim 5, wherein A limiting groove (501) is formed on the side of the limiting piece (5) away from the door (1), the extending direction of the limiting groove (501) is perpendicular to the rotation axis of the hinge (2), the hinge (2) has an embedding part (201) embedded in the limiting groove (501), and a connecting hole matched with the connecting piece (3) is formed on the embedding part (201).

8. The emergency door opener of claim 7, wherein The emergency door opening device further comprises a fixing piece (7) arranged on the inner side of the door (1), the fixing piece (7) and the limiting piece (5) are fixed on the door (1) through a fastening part (6), and the handle (4) abuts against the fixing piece (7) when the handle (4) is in the locking state. Second flexible pads (12) are arranged between the fixing piece (7) and the door (1) and between the limiting piece (5) and the door (1).

9. The emergency door opener of any one of claims 1 to 4, wherein, A fixed nut (9) is welded on the side of the hinge (2) away from the door (1), and one end of the connecting piece (3) is screwed with the fixed nut (9).

10. A working machine, characterized in that Comprise: A vehicle body; The emergency door opening device of any one of claims 1 to 9, wherein the hinge (2) of the emergency door opening device is connected with the vehicle body.

Images