Starting safety device of electric excavator and tailless excavator

Abstract

The utility model provides a starting safety device of an electric excavator and a tailless excavator. A driver seat of the excavator is provided with a turnover handrail; the safety device comprises an electronic switch which is provided with a contact, and the electronic switch is installed on the handrail. The trigger block can be in contact with the contact, and the trigger block is installed on the driver seat; when the handrail is turned to a turning-down limit position, the trigger block is in contact with the contact, and a power supply of the electric excavator is started; and when the handrail is turned over to a turning-up limit position, the trigger block is far away from the contact, and the power supply of the electric excavator is turned off.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of excavators, in particular to a starting safety device of an electric excavator and a tailless excavator. BACKGROUND

[0002] In daily engineering operations, small excavators play a crucial role, and they are good at various construction projects due to their strong excavation capability. However, when the operator needs to temporarily leave the driver's seat, if the excavator is not turned off in time according to safety procedures, it may cause safety hazards due to negligence, and the continuous operation of the equipment not only consumes fuel, but also may cause accidents due to no supervision, such as accidental movement of the equipment or unnecessary contact with the surrounding environment, which may also cause property loss or even personnel injury. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to solve the above problems and provide a starting safety device of an electric excavator and a tailless excavator.

[0004] The technical solution of the present application is as follows:

[0005] In a first aspect, the present application provides a starting safety device of an electric excavator, wherein the driver's seat of the excavator has a reversible armrest.

[0006] The safety device comprises:

[0007] An electronic switch having a contact point, the electronic switch being installed on the armrest;

[0008] A trigger block being in contact with the contact point, the trigger block being installed on the driver's seat;

[0009] When the armrest is turned to the limit position of being turned down, the trigger block is in contact with the contact point, and the power supply of the electric excavator is started;

[0010] When the armrest is turned to the limit position of being turned up, the trigger block is away from the contact point, and the power supply of the electric excavator is turned off.

[0011] The advantages or beneficial effects of the above technical solution at least include:

[0012] In a second aspect, the present application further provides a tailless excavator, wherein the tailless excavator is installed with the starting safety device of the electric excavator as described above.

[0013] The advantages or beneficial effects of the above technical solution at least include:

[0014] The electronic switch is installed on the handrail of the small excavator. When the driver is ready to leave the driver's seat and get off the vehicle, the handrail near the access direction of the cab must be flipped up to leave the cab. Since the electronic switch is separated from the trigger block, when the handrail is flipped up, the power supply of the excavator is cut off. This design ensures that the power supply of the equipment can be automatically turned off when the driver leaves the seat, thereby improving the safety during operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.

[0016] Figure 1 The position of the electronic switch and the trigger block in the first embodiment of the utility model is shown in the schematic diagram, wherein the handrail is flipped to the limit position;

[0017] Figure 2 The schematic diagram of the handrail flipped down to the limit position in the first embodiment of the utility model is shown;

[0018] Figure 3 The position of the first magnet and the second magnet in the embodiment of the utility model is shown in the schematic diagram;

[0019] Figure 4 The position of the electronic switch and the trigger block in the second embodiment of the utility model is shown in the schematic diagram;

[0020] Reference signs: 10, driver's seat; 11, handrail; 111, electronic switch; 112, rotating shaft rod; 113, first magnet; 12, trigger block; 13, second magnet; 14, gas spring support rod; 15, arc-shaped slot; 20, tailless excavator. DETAILED DESCRIPTION

[0021] Embodiments of the application will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the application are shown in the drawings, it should be understood that the application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, but rather these embodiments are provided to more thoroughly and completely understand the application. It should be understood that the drawings and embodiments of the application are only for exemplary purposes, and are not intended to limit the scope of protection of the application.

[0022] It should be noted that the embodiments and features in the embodiments of the application can be combined with each other without conflict. The application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be understood that the term "include" and variations of the term such as "includes" and "including" used herein are open-ended and mean "including, but not limited to". The term "based on" means "based, at least in part, on". The term "one embodiment" means "at least one embodiment". The term "another embodiment" means "at least one additional embodiment". The term "some embodiments" means "at least some embodiments". Related terms have analogous meanings. It should be noted that "a" and "an" are used to refer to one or more than one (i.e., to "at least one") unless otherwise indicated. It should be noted that the use of "or" herein is used to mean, and is used interchangeably with, "and / or", unless otherwise indicated. It should be noted that the use of "one" or "another" in the context of "one or another embodiment" or "one or another embodiment" is used to mean "at least one" and "at least one", respectively, unless otherwise indicated.

[0024] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0025] The names of the messages or information exchanged between the devices in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0026] Reference Figure 1 A starting safety device of an electric excavator, the excavator driver seat 10 has a reversible armrest 11, specifically, the armrest 11 has a flipped-up state and a flipped-down state;

[0027] The safety device comprises:

[0028] An electronic switch 111, the electronic switch 111 has a contact point, and the electronic switch 111 is installed on the armrest 11;

[0029] A trigger block 12, which can be in contact with the contact point, and the trigger block 12 is installed on the driver seat 10;

[0030] Specifically, when the driver drives the excavator, the armrest 11 must be flipped down, because the control lever of the excavator is installed on the armrest 11, and only after being flipped down can the control lever be normally operated. When the armrest 11 is flipped to the limit position of being flipped down, the trigger block 12 is in contact with the contact point, and the power supply of the electric excavator is started, i.e., the control can be performed.

[0031] It should be noted that the armrest is installed at a position of the driver seat 10 close to the entering direction of the excavator cab, so that when the driver gets off the vehicle, the armrest must be flipped up to get off the vehicle, which can effectively limit the driver from leaving and entering.

[0032] When the driver finishes driving the excavator, the armrest 11 must be turned up before leaving the seat, otherwise the driver will be blocked by the armrest 11 and cannot leave the seat. When the armrest 11 is turned up to the limit position, the trigger block 12 is away from the contact, and the power of the electric excavator is turned off.

[0033] Based on the further improvement of the above structure, the safety device further comprises;

[0034] The gas spring strut 14 is rotatably installed on the seat 10 at the cylinder end and rotatably installed at the bottom of the armrest 11 at the telescopic end. When the armrest 11 is turned up, the gas spring strut 14 can support the armrest 11 to avoid free falling. Meanwhile, the safety device further comprises a first magnet 113 and a second magnet 13. The first magnet 113 is installed at the bottom of the armrest 11, and the second magnet 13 is installed on the seat 10. When the armrest 11 is turned down to the limit position, the first magnet 113 and the second magnet 13 attract each other, so that the armrest 11 is in the turned-down state, and the cooperation of the gas spring strut 14 and the magnet can assist the armrest 11 to maintain the state.

[0035] It should be noted that the safety device of the present application is applicable to small excavators, so the above-mentioned excavator is a small excavator.

[0036] The installation position of the electronic switch 111 and the trigger block 12 of the present application has two embodiments:

[0037] Embodiment one:

[0038] As shown in Figure 1 and Figure 2 , the electronic switch 111 is installed at the bottom of the armrest 11, and the trigger block 12 is installed below the seat and the armrest 11. When the armrest 11 is turned down, the contact of the electronic switch 111 can directly contact with the trigger block 12, and when the armrest 11 is turned up, the trigger block 12 is separated from the contact of the electronic switch, so as to control the start and stop of the excavator.

[0039] Embodiment two:

[0040] The armrest 11 has a pivot rod 112, one end of which is fixed with the armrest 11, and the other end is rotatably connected with the seat 10 through a pivot. The electronic switch 111 is installed on the pivot rod 112. The part of the seat 10 corresponding to the electronic switch 111 is provided with an arc-shaped slot 15, so that the electronic switch 111 can slide in the arc-shaped slot 15.

[0041] The trigger block 12 is installed at the first end of the arc-shaped slot 15.

[0042] When the armrest 11 is turned to the limit position of turning up, the electronic switch 111 moves to the second end of the arc-shaped slot 15, at this time, the contact of the electronic switch 111 is separated from the position of the trigger block 12, at this time, the power supply of the excavator is turned off.

[0043] When the armrest 11 is turned to the limit position of turning down, the electronic switch 111 moves to the first end of the arc-shaped slot 15, at this time, the contact of the electronic switch 111 is contacted with the trigger block 12, at this time, the power supply of the excavator is turned on.

[0044] Compared with the first embodiment, the position of the electronic switch 111 is hidden, and the safety is increased.

[0045] Of course, the starting safety device can further comprise a pressure sensor matched with the electronic switch 11, the pressure sensor is installed on the seat surface of the seat, when the driver sits on the seat, the pressure sensor senses the pressure, and after the electronic switch 11 is turned on, the power supply of the excavator is turned on, and the double insurance effect is achieved, and further, a locking mechanism is further installed at the connection between the armrest 11 and the driver seat 10, when the pressure sensor does not detect the pressure and the armrest 11 is turned up, the locking mechanism locks the armrest 11, at this time, the armrest 11 cannot be turned, only when the pressure sensor detects the pressure (at this time, the driver sits on the driver seat 10), the locking mechanism is unlocked, and the driver can turn down the armrest 11 to start the excavator.

[0046] Further, an audible and light reminder is further installed on the armrest 11, when the electronic switch is turned on, the audible and light reminder reminds the driver that the power supply of the excavator is turned on.

[0047] The embodiment of the utility model further provides a tailless excavator 20, the tailless excav excavator is installed with the starting safety device of the electric excavator.

[0048] In the description of the present application, it should be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0049] Those skilled in the art should understand that the above-mentioned embodiments are only for clearly illustrating the present application, and do not limit the scope of the present application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. A safety device for starting an electrically powered excavator, characterized in that: a driver's seat (10) of the excavator is provided with a reversible armrest (11); the safety device comprises: an electronic switch (111) provided with a contact, the electronic switch (111) being installed on the armrest (11); a trigger block (12) capable of contacting the contact, the trigger block (12) being installed on the driver's seat (10); when the armrest (11) is turned to a limit position of being turned down, the trigger block (12) contacts the contact, and the power supply of the electrically powered excavator is started; when the armrest (11) is turned to a limit position of being turned up, the trigger block (12) is away from the contact, and the power supply of the electrically powered excavator is turned off; wherein the armrest is installed on the driver's seat (10) at a position close to an entering direction of a cab of the excavator.

2. The safety device for starting an electrically powered excavator according to claim 1, characterized in that: the electronic switch (111) is installed on a bottom of the armrest (11); the trigger block (12) is installed on a part of the driver's seat (10) below the armrest (11).

3. The safety device for starting an electrically powered excavator according to claim 1, characterized in that: the armrest (11) is provided with a pivot rod (112), one end of the pivot rod (112) is fixed to the armrest (11), and the other end is rotatably connected to the driver's seat (10) through a pivot; the electronic switch (111) is installed on the pivot rod (112); a part of the driver's seat (10) corresponding to the electronic switch (111) is provided with an arc-shaped slot (15) so that the electronic switch (111) can slide in the arc-shaped slot (15); the trigger block (12) is installed on a first end of the arc-shaped slot (15); when the armrest (11) is turned to a limit position of being turned up, the electronic switch (111) moves to a second end of the arc-shaped slot (15); when the armrest (11) is turned to a limit position of being turned down, the electronic switch (111) moves to the first end of the arc-shaped slot (15).

4. A starting safety device for an electrically driven excavator according to claim 2 or 3, characterized in that the safety device further comprises: a gas spring support rod (14), a cylinder end of the gas spring support rod (14) is rotatably installed on the driver's seat (10), and a telescopic end is rotatably installed on a bottom of the armrest (11).

5. The safety device for starting an electrically powered excavator according to claim 4, characterized in that: the safety device further comprises: a first magnet (113) installed on the bottom of the armrest (11); a second magnet (13) installed on the driver's seat (10); when the armrest (11) is turned to a limit position of being turned down, the first magnet (113) and the second magnet (13) are attracted to each other.

6. The starting safety device for an electrically driven excavator according to claim 4, characterized in that: the excavator is a small excavator.

7. A tailless excavator characterized by: the tailless excavator is provided with the safety device for starting an electrically powered excavator according to any one of claims 1-5.

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