Locking device for a power switch of a working machine and its locking seat

Abstract

This utility model relates to a locking device and its locking seat for a power switch used in engineering machinery. The locking seat includes a rear wall, first and second side walls connected to the rear wall, and a top wall fixed to the rear wall. Both the first and second side walls are provided with locking holes. The first and / or second side wall is movable relative to the rear wall so that the locking seat can be in an open state and a locked state. In the open state, the first and second side walls are separated from each other to allow the locking seat to be mounted around the power switch. In the locked state, the first and second side walls are opposite each other, and the locking element of the locking device can pass through the locking holes and lock. An opening is formed between the top wall and the first and / or second side wall, through which the operating handle of the power switch can extend to the external space. The rear wall and top wall are designed such that the rotation of the operating handle is restricted by the rear wall and top wall. This locking device effectively prevents accidental operation of the power switch and is easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery, and in particular to a locking device and its locking seat for a power switch used in engineering machinery. Background Technology

[0002] Currently, the power switches of construction machinery are not equipped with locking devices. If someone accidentally operates the power switch during maintenance, repair, or servicing of the machine, the safety of the maintenance personnel may not be guaranteed.

[0003] Therefore, there is a need to lock the power switch to ensure that the whole machine is in a zero-energy state during maintenance and upkeep, thus ensuring the safety of maintenance personnel. Utility Model Content

[0004] The purpose of this invention is to provide a locking device and its locking seat for a power switch of engineering machinery. The locking device can be conveniently installed around the power switch to effectively prevent the power switch from being operated accidentally.

[0005] According to one aspect of the present invention, a locking seat for a locking device of a power switch for engineering machinery is provided, the locking seat comprising:

[0006] Rear wall;

[0007] A first sidewall connected to the rear wall, the first sidewall being provided with a first locking hole;

[0008] A second sidewall connected to the rear wall, the second sidewall being provided with a second locking hole;

[0009] Fixed to the top wall of the rear wall;

[0010] The first sidewall and / or the second sidewall are movable relative to the rear wall so that the locking seat can be in an open state and a locked state;

[0011] In the open state, the first sidewall and the second sidewall are far apart from each other to allow the locking seat to be mounted around the power switch;

[0012] In the locked state, the first sidewall and the second sidewall are opposite to each other so that the locking member of the locking device can pass through the first locking hole and the second locking hole and lock, thereby confining the power switch within the internal space enclosed by the locking seat. A first opening is formed between the top wall and the first sidewall and / or a second opening is formed between the top wall and the second sidewall. The operating handle of the power switch can extend to the external space through the first opening and / or the second opening. The rear wall and the top wall restrict the rotation of the operating handle.

[0013] According to this utility model, the locking seat can be easily installed around the power switch and removed from the power switch without any structural changes or damage. By passing the locking member through the first locking hole and the second locking hole of the locking seat and locking it, the power switch can be effectively prevented from being operated by mistake, ensuring the safety of maintenance personnel.

[0014] In a preferred embodiment, the first sidewall and / or the second sidewall are hinged to the rear wall.

[0015] In a preferred embodiment, the first sidewall and / or the second sidewall are provided with at least one slot for receiving a portion of the flange of the power switch.

[0016] In a preferred embodiment, the first sidewall and / or the second sidewall are provided with an opening for receiving a portion of the body of the power switch.

[0017] According to the present invention, by providing slots and openings on the first sidewall and / or the second sidewall to receive a portion of the flange and body of the power switch, it is possible to further prevent the locking device from being removed.

[0018] In a preferred embodiment, the slot communicates with the opening. This facilitates the machining of the locking seat.

[0019] In a preferred embodiment, the top wall includes a first top wall portion fixed to the rear wall and a second top wall portion fixed to the first top wall portion, the second top wall portion being perpendicular to the first top wall portion. In the locked state, the first top wall portion is spaced apart from the top edge of the first side wall and / or the top edge of the second side wall, thereby forming the first opening and / or the second opening. The second top wall portion restricts the rotation of the operating handle. This allows for a more compact locking seat structure.

[0020] In a preferred embodiment, the top wall is formed by a single wall that slopes from the top edge of the rear wall toward the first and second side walls in the locked state. This simplifies the locking seat structure.

[0021] In a preferred embodiment, one of the first sidewall and the second sidewall is movable relative to the rear wall, and the rear wall, the top wall, and the other of the first sidewall and the second sidewall are formed by bending a single metal plate.

[0022] In a preferred embodiment, both the first sidewall and the second sidewall are movable relative to the rear wall, which and the top wall are formed by bending a single metal plate.

[0023] According to another aspect of this utility model, a locking device for a power switch of construction machinery is proposed. The locking device includes the aforementioned locking base and a locking member that passes through a first locking hole and a second locking hole on the locking base. By passing the locking member through the first and second locking holes of the locking base and locking it, the locking device can effectively prevent accidental operation of the power switch and ensure the safety of maintenance personnel. This locking device is portable and can be sold as a complete accessory with the machine. It is applicable to power switches commonly used in construction machinery on the market. Attached Figure Description

[0024] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0025] Figure 1 A locking device for a power switch for engineering machinery according to a preferred embodiment of the present invention is shown, the locking device being in a locked state.

[0026] Figure 2 Show Figure 1 The diagram shows a front perspective view of the locking seat of the locking device, which is in the open position.

[0027] Figure 3 Show Figure 2 The rear-view perspective view of the locking seat is shown, with the locking seat in the open position.

[0028] Figure 4 Show Figure 1 The locking device shown is used to lock the first power switch of the construction machinery, and the locking device is in a locked state.

[0029] Figure 5 Show Figure 1 The locking device shown is used to lock the first power switch of the construction machinery, and the locking device is in the open state.

[0030] Figure 6 Show Figure 1 The locking device shown is used to lock the second power switch of the construction machinery, and the locking device is in a locked state.

[0031] Figure 7 Show Figure 1 The locking device shown is used to lock the second power switch of the construction machinery, and the locking device is in the open state.

[0032] These figures are schematic only and are not necessarily drawn to scale. They only show those parts necessary to illustrate the present invention, while other parts may be omitted or simply mentioned. The present invention may include other parts or components besides those shown in the figures.

[0033] The reference numerals used in this application are as follows:

[0034] 100: Locking device;

[0035] 1: Locking seat;

[0036] 11: Posterior wall;

[0037] 12: First sidewall; 121: First locking hole; 122: First opening; 123: First slot; 124: Second slot;

[0038] 13: Second sidewall; 131: Second locking hole; 132: Second opening; 133: Third slot; 134: Fourth slot;

[0039] 14: First top wall section;

[0040] 15: The second top wall section;

[0041] 16: Hinges;

[0042] 17: The first opening;

[0043] 2: Locking pin;

[0044] 3: Lock;

[0045] 200: First power switch; 21: First operating handle; 22: First body; 23: First flange; 24: Second flange;

[0046] 300: Second power switch; 31: Second operating handle; 32: Second body. Detailed Implementation

[0047] In the following description, numerous specific details are set forth to enable those skilled in the art to gain a more complete understanding of the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention may be conceived to be practiced with any combination of the following features and elements, regardless of whether they relate to different embodiments. Therefore, the following features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0048] The directional terms “front,” “rear,” and “top” used in this application are for descriptive purposes only and are not intended to limit the technical solution of this utility model. Furthermore, the terms “first,” “second,” “third,” and “fourth” are used herein to describe components or parts; these terms are only used to distinguish individual components or parts and are not intended to limit the order or number of these components or parts.

[0049] Figure 1 A locking device 100 for a power switch of engineering machinery according to a preferred embodiment of the present invention is shown, the locking device 100 being in a locked state. The locking device 100 includes a locking seat 1, a locking pin 2, and a lock 3, the locking pin 2 passing through a locking hole in the locking seat 1 and being locked by the lock 3. Although Figure 1 The locking element formed by the locking pin 2 and the lock 3 is shown, but it should be understood that any suitable locking element can be used for locking, such as a chain lock, etc.

[0050] Figure 2 and Figure 3 The locking seat 1 of the locking device 100 according to a preferred embodiment of the present invention is shown from the front and rear. The locking seat 1 includes a rear wall 11, a first side wall 12 and a second side wall 13 connected to the rear wall 11, and a top wall fixed to the rear wall 11. In the embodiment shown in the figures, the top wall includes a first top wall portion 14 fixed to the rear wall 11 and a second top wall portion 15 fixed to the first top wall portion 14.

[0051] like Figure 2 and Figure 3 As shown, the first sidewall 12 is fixed to the rear wall 11, and the second sidewall 13 is connected by a hinge 16 (see...). Figure 3 The second side wall 13 is movably connected to the rear wall 11, so that the locking seat 1 can move relative to the rear wall 11, so that the locking seat 1 is in an open or locked state. In this case, it is advantageous that the rear wall 11, the first side wall 12, the first top wall portion 14 and the second top wall portion 15 are formed by bending a single metal plate, which is simple to manufacture.

[0052] Alternatively, the first sidewall 12 is hinged to the rear wall 11, and the second sidewall 13 is fixed to the rear wall 11, so that the first sidewall 12 can move relative to the rear wall 11 to put the locking seat 1 in an open or locked state. In this case, it is advantageous that the rear wall 11, the second sidewall 13, the first top wall portion 14 and the second top wall portion 15 are formed by bending a single metal plate.

[0053] Alternatively, both the first sidewall 12 and the second sidewall 13 are hinged to the rear wall 11, so that both the first sidewall 12 and the second sidewall 13 can move relative to the rear wall 11, so that the locking seat 1 is in an open or locked state. In this case, it is advantageous that the rear wall 11, the first top wall portion 14 and the second top wall portion 15 are formed by bending a single metal plate.

[0054] It is conceivable that the locking seat 1 could also be made of plastic material. In this case, advantageously, the movable connection between the first sidewall 12 and / or the second sidewall 13 and the rear wall 11 can be formed by a thinned portion of the plastic material, which forms a hinge.

[0055] Figure 4 and Figure 5 The locking device 100 is shown in both the locked and unlocked states. The locking device 100 is used to lock the first power switch 200. Figure 6 and Figure 7 The locking device 100 is shown in both the locked and unlocked states. The locking device 100 is used to lock the second power switch 300.

[0056] like Figure 5 and Figure 7 As shown, when the locking device 100 is in the open state, the second sidewall 13 is away from the first sidewall 12, so the locking seat 1 can be easily installed around the power switch.

[0057] like Figure 2 As shown, the first sidewall 12 of the locking seat 1 is provided with a first locking hole 121, and the second sidewall 13 is provided with a second locking hole 131. Figure 1 , Figure 4 and Figure 6 As shown, in the locked state, the second sidewall 13 is opposite to the first sidewall 12, so that the locking pin 2 can pass through the first locking hole 121 and the second locking hole 131 and be locked by the lock 3, thereby restricting the power switch to the internal space enclosed by the locking seat 1.

[0058] like Figures 4 to 7 As shown, power switches used in construction machinery typically include an operating handle. Figure 4 and Figure 5 This invention illustrates a power switch commonly used in the field of engineering machinery, hereinafter referred to as a first power switch 200. The first power switch 200 includes a generally cylindrical first body 22, a first flange 23 and a second flange 24 located at both ends of the first body 22, and a first operating handle 21 disposed on the top of the first flange 23. Figure 6 and Figure 7This diagram shows another type of power switch commonly used in the field of engineering machinery, hereinafter referred to as the second power switch 300. The second power switch 300 includes a generally frustum-shaped second body 32 and a second operating handle 31 disposed on the top of the second body 32.

[0059] like Figure 1 , Figure 4 and Figure 6 As shown, when the locking seat 1 is in the locked state, the top edge of the first top wall portion 14 is spaced apart from the top edge of the first side wall 12 and the top edge of the second side wall 13, thereby forming a first opening 17 between the first top wall portion 14 and the first side wall 12, and a second opening (not clearly shown in the figure) between the first top wall portion 14 and the second side wall 13. Figure 4 As shown, the first operating handle 21 of the first power switch 200 extends into the external space through the first opening 17. Figure 6 As shown, the second operating handle 31 of the second power switch 300 extends into the external space through the first opening 17 and the second opening. Thus, the vertical movement of the locking device 100 is restricted by the first operating handle 21 and the second operating handle 31, making it impossible to remove the locking device 100 without unlocking the lock 3.

[0060] To prevent the power switch operating handle from being turned to the open position, the distance between the rear wall 11 of the locking seat 1 and the operating handle, as well as the distance between the second top wall portion 15 and the operating handle, are designed such that the rotation of the operating handle is restricted by the rear wall 11 and the second top wall portion 15. It is also conceivable that blocking portions be provided on the rear wall 11 and the second top wall portion 15 to block the rotation of the operating handle.

[0061] Preferably, the first top wall portion 14 and the second top wall portion 15 are perpendicular to each other. This results in a more compact product structure. However, it should be understood that the first top wall portion 14 and the second top wall portion 15 may also be inclined to each other or even formed by a single wall, as long as the top wall can restrict the rotation of the operating handle. For example, the top wall may be formed by a single wall that is inclined from the top edge of the rear wall 11 toward the first side wall 12 and the second side wall 13 in the locked state.

[0062] In advantageous embodiments, such as Figure 2 and Figure 4 As shown, the first sidewall 12 is provided with a first slot 123 and a second slot 124, which are respectively used to receive a portion of the first flange 23 and a portion of the second flange 24 of the first power switch 200 (see...). Figure 4Similarly, the second sidewall 13 is provided with a third slot 133 and a fourth slot 134, which are respectively used to receive a portion of the first flange 23 and a portion of the second flange 24 of the first power switch 200. Thus, in the locked state, it is possible to further prevent the locking device 100 from being removed.

[0063] More advantageously, such as Figure 2 and Figure 4 As shown, the first sidewall 12 is also provided with a first opening 122 for receiving a portion of the first body 22 of the first power switch 200. Similarly, the second sidewall 13 is also provided with a second opening 132 for receiving a portion of the first body 22 of the first power switch 200. Thus, in the locked state, it is possible to further prevent the locking device 100 from being removed.

[0064] As described above, slots and openings are provided on both the first sidewall 12 and the second sidewall 13. However, it should be understood that slots and openings may be provided on only one of the first sidewall 12 and the second sidewall 13, or neither may be provided with slots and openings.

[0065] like Figure 2 As shown, the first slot 123 and the second slot 124 on the first sidewall 12 communicate with the first opening 122. Similarly, the third slot 133 and the fourth slot 134 on the second sidewall 13 communicate with the second opening 132. More advantageously, the first opening 122 and the second opening 132 also communicate with the outside. This facilitates the processing and positioning of the locking device.

[0066] Industrial applicability

[0067] This utility model proposes a locking device and its locking seat for a power switch used in construction machinery. This locking device can be easily installed around and removed from the power switch without any structural modifications or damage. It effectively prevents accidental operation of the power switch, is easy to carry, and can be sold as a complete accessory with the machine. It is applicable to power switches commonly used in construction machinery on the market.

[0068] Exemplary embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited thereto. Any variations and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope defined in the claims.

Claims

1. A locking seat (1) of a locking device (100) for a power switch of engineering machinery, characterized in that, The locking seat (1) includes: Posterior wall (11); A first sidewall (12) is connected to the rear wall (11), and the first sidewall (12) is provided with a first locking hole (121); A second sidewall (13) is connected to the rear wall (11), and the second sidewall (13) is provided with a second locking hole (131); The top wall is fixed to the rear wall (11); The first sidewall (12) and / or the second sidewall (13) are movable relative to the rear wall (11) so that the locking seat (1) can be in an open state and a locked state; In the open state, the first sidewall (12) and the second sidewall (13) are far apart from each other to allow the locking seat (1) to be mounted around the power switch; In the locked state, the first sidewall (12) and the second sidewall (13) are opposite to each other so that the locking member of the locking device (100) can pass through the first locking hole (121) and the second locking hole (131) and lock, thereby confining the power switch in the internal space enclosed by the locking seat (1). A first opening (17) is formed between the top wall and the first sidewall (12) and / or a second opening is formed between the top wall and the second sidewall (13). The operating handle of the power switch can extend into the external space through the first opening (17) and / or the second opening. The rear wall (11) and the top wall restrict the rotation of the operating handle.

2. The locking seat (1) according to claim 1, characterized in that, The first sidewall (12) and / or the second sidewall (13) are connected to the rear wall (11) via a hinge (16).

3. The locking seat (1) according to claim 1 or 2, characterized in that, The first sidewall (12) and / or the second sidewall (13) are provided with at least one slot for receiving a portion of the flange of the power switch.

4. The locking seat (1) according to claim 3, characterized in that, The first sidewall (12) and / or the second sidewall (13) are provided with openings for receiving a portion of the body of the power switch.

5. The locking seat (1) according to claim 4, characterized in that, The slot is connected to the opening.

6. The locking seat (1) according to claim 1 or 2, characterized in that, The top wall includes a first top wall portion (14) fixed to the rear wall (11) and a second top wall portion (15) fixed to the first top wall portion (14), the second top wall portion (15) being perpendicular to the first top wall portion (14). In the locked state, the first top wall portion (14) is spaced apart from the top edge of the first side wall (12) and / or the top edge of the second side wall (13), thereby forming the first opening (17) and / or the second opening. The second top wall portion (15) restricts the rotation of the operating handle.

7. The locking seat (1) according to claim 1 or 2, characterized in that, The top wall is formed by a single wall that slopes from the top edge of the rear wall (11) toward the first side wall (12) and the second side wall (13) in the locked state.

8. The locking seat (1) according to claim 1 or 2, characterized in that, One of the first sidewall (12) and the second sidewall (13) is movable relative to the rear wall (11), and the other of the rear wall (11), the top wall, and the first sidewall (12) and the second sidewall (13) is formed by bending a single metal plate.

9. The locking seat (1) according to claim 1 or 2, characterized in that, Both the first sidewall (12) and the second sidewall (13) are movable relative to the rear wall (11), which and the top wall are formed by bending a single metal plate.

10. A locking device (100) for a power switch of engineering machinery, characterized in that, The locking device (100) includes a locking seat (1) according to any one of claims 1 to 9 and a locking member capable of passing through the first locking hole (121) and the second locking hole (131).

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