Isolation handcart

Abstract

The utility model belongs to the technical field of isolation handcarts, and discloses an isolation handcart. The isolation handcart comprises a handcart body and at least one loop mechanism, the loop mechanism comprises two insulators, an insulating cover and an electric loop structure, a first opening is formed in one side, close to the insulators, of the insulating cover, second openings are formed in the top wall and the bottom wall of the insulating cover, the two second openings are communicated with the first opening, and the two second openings are communicated with the electric loop structure. Two penetrating holes are formed in one side, close to the insulator, of the insulating cover; the electric loop structure comprises two contact assemblies and a conductive column, each contact assembly comprises a contact seat, a contact arm and a contact, the contact seat is located in the insulating cover, connected with the insulating cover in a clamped mode and fixed to the insulator, the contact arm penetrates through the penetrating hole and is fixedly connected with the contact seat, and the contact is fixed to the contact arm. According to the utility model, the contact area between the internal structure of the insulating cover and the air can be increased, the heat dissipation intensity is increased, and the situation that the contact cannot normally carry out switching-on and switching-off actions with the switch cabinet because the internal temperature of the insulating cover is too high is avoided.

Description

Technical Field

[0001] This utility model relates to the field of isolation handcart technology, and in particular to an isolation handcart. Background Technology

[0002] As an indispensable component of high-voltage switchgear in power systems, isolating trolleys are designed to safely and reliably isolate or connect circuits, ensuring the smooth transmission and distribution of power. Used within enclosed metal switchgear, the isolating trolley can perform a closing action with the switchgear, enabling the main circuit to conduct.

[0003] Existing isolating handcarts consist of a body, an upright insulating cylinder, and an electrical circuit structure. The upright insulating cylinder is connected to the body, and the electrical circuit structure is located inside the upright insulating cylinder, with the contacts extending outside the cylinder. The existing upright insulating cylinder is a closed structure with only a heat dissipation grille at the top for cooling. This single-direction heat dissipation and small heat dissipation area result in low heat dissipation efficiency, making it easy for heat to accumulate and generate high temperatures inside the cylinder. High temperatures can cause internal components to deform due to heat and degrade their insulation performance, preventing the contacts in the electrical circuit structure from properly engaging and disengaging with the switchgear, potentially leading to economic losses and endangering life and health. Utility Model Content

[0004] The purpose of this utility model is to provide an isolation handcart that can increase the contact area between the internal structure of the insulation cover and the air, increase the heat dissipation intensity, and avoid the situation where the internal temperature of the insulation cover is too high, causing the contacts to be unable to perform normal opening and closing actions with the switch cabinet. In addition, it increases safety and makes the insulation cover more secure.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An isolated handcart includes a body and at least one circuit mechanism, the circuit mechanism comprising:

[0007] Two insulators are fixed to the vehicle body at intervals;

[0008] An insulating cover has a first opening on the side near the insulator, and a second opening on both the top and bottom walls of the insulating cover. Both second openings are connected to the first opening, and the insulating cover has two through holes on the side near the insulator.

[0009] An electrical circuit structure includes two contact assemblies and a conductive post. The two contact assemblies are arranged one-to-one with two insulators. Each contact assembly includes a contact base, a contact arm, and a contact. The contact base is located inside the insulating cover and is snapped into the insulating cover. The contact base is fixed to the insulator. The contact arm passes through the through hole and is fixedly connected to the contact base. The contact is fixed to the contact arm. The conductive post is located inside the insulating cover, and its two ends are respectively fixed to the two contact bases.

[0010] In some possible implementations, the insulating cover is connected to a limiting fastener at the second opening, and the insulating cover and the limiting fastener together form a snap-fit ​​cavity, and the contact seat snaps into the snap-fit ​​cavity.

[0011] In some possible implementations, the second opening located on the top wall of the insulating cover covers a portion of the top wall of the insulating cover, the second opening located on the bottom wall of the insulating cover covers a portion of the bottom wall of the insulating cover, and the first opening covers all sidewalls of the insulating cover near the insulator.

[0012] In some possible implementations, the outer wall surface of the conductive post is a corrugated surface.

[0013] In some possible implementations, both contact seats are L-shaped structures, each L-shaped structure including a first vertical portion and a first horizontal portion connected in sequence, the first vertical portion being connected to the contact arm and the first horizontal portion being connected to the conductive post.

[0014] In some possible implementations, the isolation trolley further includes a first connector and a second connector, wherein one of the contact seats is fixed to the corresponding insulator via the first connector, and the other contact seat is fixed to the corresponding insulator via the second connector.

[0015] In some possible implementations, one of the insulators is fixed to the side wall of the vehicle body, and the other insulator is fixed to the bottom wall of the vehicle body. The first connecting member is an L-shaped plate, which includes a second vertical portion and a second horizontal portion connected in sequence. The second vertical portion is connected to the insulator located on the side wall of the vehicle body, and the second horizontal portion is connected to the corresponding contact seat. The second connecting member is a U-shaped plate, with the first side wall of the U-shaped plate connected to the insulator located on the bottom wall of the vehicle body, and the second side wall of the U-shaped plate connected to the corresponding contact seat.

[0016] In some possible implementations, the isolation handcart further includes a first screw and a second screw, wherein the first screw passes sequentially through the second horizontal portion and the corresponding contact seat and is threaded to one end of the conductive post; the second screw passes sequentially through the second sidewall of the U-shaped plate and the corresponding contact seat and is threaded to the other end of the conductive post.

[0017] In some possible implementations, the insulating cover is a bent-form structure.

[0018] In some possible implementations, the inner wall of the insulating cover is provided with reinforcing ribs.

[0019] The beneficial effects of this utility model are:

[0020] The isolation trolley provided by this utility model includes a vehicle body and at least one circuit mechanism. The circuit mechanism includes two insulators, an insulating cover, and an electrical circuit structure. By providing a first opening and a second opening on the insulating cover, while ensuring that the conductive posts are not completely exposed to the outside, thus guaranteeing safety, the contact area between the internal structure of the insulating cover and the air can be increased, thereby increasing heat dissipation and preventing the internal temperature of the insulating cover from becoming too high, which could lead to the contacts failing to properly close or open with the switchgear. The first opening is located on the side of the insulating cover closer to the insulator, further enhancing safety. In addition, the insulating cover is fixed by snapping it onto the contact seat, making installation convenient and the fixation relatively secure. Attached Figure Description

[0021] Figure 1 This is a front view of the isolation handcart provided by this utility model;

[0022] Figure 2 This is a side view of the isolation handcart provided by this utility model;

[0023] Figure 3 This is an attached view of the isolation handcart provided by this utility model;

[0024] Figure 4 This is a first-view structural schematic diagram of the insulating cover involved in this utility model;

[0025] Figure 5 This is a second-view structural schematic diagram of the insulating cover involved in this utility model.

[0026] In the picture:

[0027] 1. Vehicle body; 11. Box body; 12. Chassis; 2. Insulator; 3. Insulating cover; 31. First opening; 32. Second opening; 33. Through hole; 34. Reinforcing rib; 4. Contact seat; 5. Contact arm; 6. Contact; 7. Conductive post; 8. Limiting and fixing component; 9. First connecting component; 10. Second connecting component; 20. First screw; 30. Second screw. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figures 1 to 5As shown, this utility model provides an isolation handcart for high-current circuits. The isolation handcart includes a body 1 and at least one circuit mechanism. The circuit mechanism includes two insulators 2, an insulating cover 3, and an electrical circuit structure. The two insulators 2 are fixed to the body 1 at intervals. The insulating cover 3 has a first opening 31 on the side near the insulator 2. The top and bottom walls of the insulating cover 3 both have second openings 32, which are connected to the first opening 31. The insulating cover 3 has two through holes 33 on the side near the insulator 2. The electrical circuit structure includes two contact assemblies and a conductive post 7. The two contact assemblies are arranged one-to-one with the two insulators 2. Each contact assembly includes a contact seat 4, a contact arm 5, and a contact 6. The contact seat 4 is located inside the insulating cover 3 and is snapped into the insulating cover 3. The contact seat 4 is fixed to the insulator 2. The contact arm 5 passes through the through hole 33 and is fixedly connected to the contact seat 4. The contact 6 is fixed to the contact arm 5. The conductive post 7 is located inside the insulating cover 3, and its two ends are respectively fixed to the two contact seats 4.

[0033] By providing a first opening 31 and a second opening 32 on the insulating cover 3, the existing fully enclosed structure of the vertical insulating cylinder is changed to a partially enclosed structure. This ensures that the conductive post 7 is not completely exposed, guaranteeing safety, while increasing the contact area between the internal structure of the insulating cover 3 and the air. This allows for heat dissipation from multiple directions, increasing the heat dissipation intensity and preventing the internal temperature of the insulating cover 3 from becoming too high, which could prevent the contacts 6 from properly engaging and disengaging with the switchgear. The first opening 31 is located on the side of the insulating cover 3 closest to the insulator 2, further enhancing safety. Furthermore, the insulating cover 3 is secured by snapping it into the contact seat 4, making installation convenient and the fixation relatively secure.

[0034] Optionally, in this embodiment, the vehicle body 1 includes a housing 11 and a chassis 12 with rollers, the housing 11 being fixed to the chassis 12. A door stop assembly is installed on the housing 11 for opening the door of the switch cabinet.

[0035] Optionally, in this embodiment, the insulating cover 3 is a bent-form structure. This configuration saves processing time and materials. Optionally, in this embodiment, the inner wall of the insulating cover 3 is provided with reinforcing ribs 34 to improve the structural strength and rigidity of the insulating cover 3 and reduce weight. Specifically, the reinforcing ribs 34 are U-shaped structures, and multiple reinforcing ribs 34 are evenly distributed along the length direction of the insulating cover 3. In this embodiment, as... Figure 3 As shown, there are three loop mechanisms. The left loop mechanism is in the cross-section at the reinforcing rib 34 of the insulating cover 3, and the right loop mechanism is in the cross-section at the through hole 33 of the insulating cover 3.

[0036] To save materials and facilitate processing, alternatively, such as Figure 2 , Figure 4 and Figure 5As shown, the insulating cover 3 is connected to a limiting fastener 8 at the second opening 32. The insulating cover 3 and the limiting fastener 8 together form a snap-fit ​​cavity, and the contact seat 4 snaps into the snap-fit ​​cavity. The limiting fastener 8 can be provided only at the second opening 32 located on the top wall of the insulating cover 3, or only at the second opening 32 located on the bottom wall of the insulating cover 3, or both second openings 32 can be provided. In this embodiment, the limiting fastener 8 is provided at the second opening 32 located on the top wall of the insulating cover 3, which facilitates the installation of the insulating cover 3 on the contact seat 4 and ensures a reliable connection. In addition, in this embodiment, the insulating cover 3 and the limiting fastener 8 are integrally bent and formed, which facilitates processing and saves processing time. In other embodiments, the inner wall of the insulating cover 3 is provided with two spaced snap-fit ​​protrusions, and the contact seat 4 snaps between the two snap-fit ​​protrusions to achieve the snap-fit ​​between the insulating cover 3 and the contact seat 4, which is not limited to this embodiment.

[0037] Optionally, the second opening 32 on the top wall of the insulating cover 3 covers a portion of the top wall of the insulating cover 3, the second opening 32 on the bottom wall of the insulating cover 3 covers a portion of the bottom wall of the insulating cover 3, and the first opening 31 covers all the side walls of the insulating cover 3 near the insulator 2. This arrangement ensures heat dissipation while improving safety.

[0038] Optionally, such as Figure 2 As shown, the outer wall surface of the conductive post 7 is wavy, which increases the contact area between the conductive post 7 and the air, and is beneficial to the heat dissipation of the conductive post 7 itself.

[0039] To facilitate the connection between the contact seat 4 and the contact arm 5 and the conductive post 7, optionally in this embodiment, both contact seats 4 are L-shaped structures. The L-shaped structure includes a first vertical part and a first horizontal part connected in sequence. The first vertical part is connected to the contact arm 5, and the first horizontal part is connected to the conductive post 7. Furthermore, to facilitate the connection between the contact seat 4 and the insulator 2, optionally in this embodiment, the isolating handcart also includes a first connecting member 9 and a second connecting member 10. One contact seat 4 is fixed to the corresponding insulator 2 via the first connecting member 9, and the other contact seat 4 is fixed to the corresponding insulator 2 via the second connecting member 10.

[0040] In this embodiment, one insulator 2 is fixed to the side wall of the vehicle body 1, and the other insulator 2 is fixed to the bottom wall of the vehicle body 1, providing good support for the conductive post 7. The first connecting member 9 is an L-shaped plate, which includes a second vertical part and a second horizontal part connected in sequence. The second vertical part is connected to the insulator 2 located on the side wall of the vehicle body 1, and the second horizontal part is connected to the corresponding contact seat 4. This arrangement facilitates connection. The second connecting member 10 is a U-shaped plate. The first side wall of the U-shaped plate is connected to the insulator 2 located on the bottom wall of the vehicle body 1, and the second side wall of the U-shaped plate is connected to the corresponding contact seat 4. This arrangement also facilitates connection.

[0041] Specifically, the isolation trolley also includes a first screw 20 and a second screw 30. The first screw 20 passes through the second horizontal section and the corresponding contact seat 4 in sequence and is threaded to one end of the conductive post 7; the second screw 30 passes through the second side wall of the U-shaped plate and the corresponding contact seat 4 in sequence and is threaded to the other end of the conductive post 7. With this configuration, the L-shaped plate, the corresponding contact seat 4, and the conductive post 7 can be connected together using the first screw 20, and the U-shaped plate, the corresponding contact seat 4, and the conductive post 7 can be connected together using the second screw 30, making installation convenient.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An isolated handcart, characterized in that, Includes a vehicle body (1) and at least one loop mechanism, the loop mechanism comprising: Two insulators (2) are fixed to the vehicle body (1) at intervals; An insulating cover (3) is provided with a first opening (31) on the side of the insulating cover (3) near the insulator (2), and a second opening (32) is provided on the top wall and bottom wall of the insulating cover (3). The two second openings (32) are connected to the first opening (31), and two through holes (33) are provided on the side of the insulating cover (3) near the insulator (2). An electrical circuit structure includes two contact assemblies and a conductive post (7). The two contact assemblies are arranged one-to-one with the two insulators (2). Each contact assembly includes a contact seat (4), a contact arm (5), and a contact (6). The contact seat (4) is located inside the insulating cover (3) and is snapped into the insulating cover (3). The contact seat (4) is fixed to the insulator (2). The contact arm (5) passes through the through hole (33) and is fixedly connected to the contact seat (4). The contact (6) is fixed to the contact arm (5). The conductive post (7) is located inside the insulating cover (3). The two ends of the conductive post (7) are respectively fixed to the two contact seats (4).

2. The isolation handcart according to claim 1, characterized in that, The insulating cover (3) is connected to a limiting fastener (8) at the second opening (32). The insulating cover (3) and the limiting fastener (8) together form a snap-fit ​​cavity, and the contact seat (4) snaps into the snap-fit ​​cavity.

3. The isolation handcart according to claim 1, characterized in that, The second opening (32) located on the top wall of the insulating cover (3) covers part of the top wall of the insulating cover (3), the second opening (32) located on the bottom wall of the insulating cover (3) covers part of the bottom wall of the insulating cover (3), and the first opening (31) covers all the side walls of the insulating cover (3) on the side close to the insulator (2).

4. The isolation handcart according to claim 1, characterized in that, The outer wall surface of the conductive column (7) is a wavy surface.

5. The isolation handcart according to claim 1, characterized in that, Both contact seats (4) are L-shaped structures, each L-shaped structure including a first vertical part and a first horizontal part connected in sequence. The first vertical part is connected to the contact arm (5), and the first horizontal part is connected to the conductive post (7).

6. The isolation handcart according to claim 5, characterized in that, The isolation handcart also includes a first connector (9) and a second connector (10), wherein one of the contact seats (4) is fixed to the corresponding insulator (2) through the first connector (9), and the other contact seat (4) is fixed to the corresponding insulator (2) through the second connector (10).

7. The isolation handcart according to claim 6, characterized in that, One of the insulators (2) is fixed to the side wall of the vehicle body (1), and the other insulator (2) is fixed to the bottom wall of the vehicle body (1). The first connecting member (9) is an L-shaped plate, which includes a second vertical part and a second horizontal part connected in sequence. The second vertical part is connected to the insulator (2) located on the side wall of the vehicle body (1), and the second horizontal part is connected to the corresponding contact seat (4). The second connecting member (10) is a U-shaped plate, the first side wall of which is connected to the insulator (2) located on the bottom wall of the vehicle body (1), and the second side wall of which is connected to the corresponding contact seat (4).

8. The isolation handcart according to claim 7, characterized in that, The isolation handcart also includes a first screw (20) and a second screw (30). The first screw (20) passes through the second horizontal part and the corresponding contact seat (4) in sequence and is threaded to one end of the conductive post (7). The second screw (30) passes through the second side wall of the U-shaped plate and the corresponding contact seat (4) in sequence and is threaded to the other end of the conductive post (7).

9. The isolation handcart according to any one of claims 1-8, characterized in that, The insulating cover (3) is a bent and formed structure.

10. The isolation handcart according to any one of claims 1-8, characterized in that, The inner wall of the insulating cover (3) is provided with reinforcing ribs (34).

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