Novel interlocking device between two adjacent cabinet bodies

Abstract

The utility model relates to the technical field of mechanical interlocking, and discloses a novel interlocking device between two adjacent cabinet bodies, which comprises an interlocking assembly, a cabinet body I and a cabinet body II, the cabinet body I and the cabinet body II are connected through the interlocking assembly, and a chassis truck I and a chassis truck II are respectively arranged on the cabinet body I and the cabinet body II. The interlocking assembly comprises a fixing sleeve, a limiting rod and a push rod, the limiting rod is in threaded connection with the push rod, one end, away from the limiting rod, of the push rod is in threaded connection with a universal end, the limiting rod is movably inserted into the fixing sleeve, and one end, corresponding to the limiting rod, of the fixing sleeve is fixedly provided with a limiting sleeve; the side, away from the limiting sleeve, of the fixing sleeve is in threaded connection with an adjusting nut, a limiting plate is arranged at the end, away from the universal end, of the push rod, and a reset spring is arranged in the fixing sleeve and connected to the push rod in a sleeving mode. According to the scheme, the adjacent cabinet bodies can be interlocked, and the reset springs are easier to replace.

Description

Technical Field

[0001] This utility model relates to the field of mechanical interlocking technology, specifically a novel interlocking device between two adjacent cabinets. Background Technology

[0002] In the use of switchgear, there are many situations where two-in-one switch control is required, meaning that two trolleys cannot enter the working position at the same time and be powered on together, as this can easily cause short circuits and line paralysis. Once an error occurs, a major safety accident may occur.

[0003] Existing handcart interlocking devices generally employ built-in return springs. The spring force allows the interlocking device to restrict the position of the handcarts on both sides as needed. However, the return spring is a consumable part, and current technology makes it difficult to replace it, thus compromising the interlocking effect between adjacent cabinets. To address this, we propose a novel interlocking device between two adjacent cabinets. Utility Model Content

[0004] The purpose of this invention is to provide a novel interlocking device between two adjacent cabinets, addressing the problem of existing handcart interlocking devices mentioned in the background section. These devices typically employ a built-in return spring, which, through its elastic force, restricts the position of the handcarts on both sides as needed. However, the return spring is a consumable part, and in the prior art, its replacement is inconvenient, thus compromising the effectiveness of the interlocking between adjacent cabinets.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel interlocking device between two adjacent cabinets, comprising an interlocking assembly, a first cabinet, and a second cabinet. The first cabinet and the second cabinet are connected by the interlocking assembly. A chassis trolley 1 and a chassis trolley 2 are respectively installed on the first cabinet and the second cabinet. Both the first chassis trolley and the second chassis trolley have built-in handcart components. The interlocking assembly includes a fixed sleeve, a limiting rod, and a push rod. The limiting rod and the push rod are connected by threads and are respectively engaged at corresponding positions on the first cabinet and the second cabinet. A universal joint is threaded to the end of the push rod away from the limiting rod. The limiting rod is movably inserted into the fixed sleeve. A limiting sleeve is fixedly installed on the end of the fixed sleeve corresponding to the limiting rod. An adjusting nut is threaded to the side of the fixed sleeve away from the limiting sleeve. A limiting plate is provided at the end of the push rod away from the universal joint. A return spring is provided inside the fixed sleeve and is sleeved on the push rod.

[0006] Preferably, the center of the limiting rod, the push rod and the fixing sleeve are collinear, and the limiting rod and the push rod are both located inside the fixing sleeve.

[0007] Preferably, the corresponding positions of cabinet one and cabinet two are engaged between the limiting sleeve and the adjusting nut.

[0008] Preferably, the outer diameter of the limiting rod is greater than the outer diameter of the push rod, and the length of the push rod is greater than the length of the limiting rod.

[0009] Preferably, the fixing sleeve passes through the corresponding positions of cabinet body one and cabinet body two.

[0010] Preferably, the reset spring is disposed between the limiting plate and the fixing sleeve, and the reset spring is disposed inside the fixing sleeve.

[0011] Preferably, the outer diameter of the limiting plate is equal to the inner diameter of the fixing sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This novel interlocking device between two adjacent cabinets, by placing a return spring inside a fixed sleeve and threading a push rod and a limit rod together, allows the return spring to ensure that the trolley of cabinet 1 can only be moved to the working position when the circuit breaker of cabinet 2 is in the test position. When the circuit breaker of cabinet 2 is in the working position, the trolley of cabinet 1 is locked in the test position and cannot be operated. This achieves mutual interlocking and prevents two trolleys from entering the working position simultaneously, thus avoiding the risk of a major safety accident in case of an error. When replacing the return spring, rotating the adjusting nut disengages it from the fixed sleeve, causing the fixed sleeve to slide away from the push rod on the limit rod. At this point, the interlocking assembly can be disengaged from cabinet 1 and cabinet 2. After separating the push rod and the limit rod, the return spring can be quickly removed and replaced, effectively ensuring the interlocking effect of the trolleys. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the interlocking connection between cabinet body one and cabinet body two of this utility model;

[0015] Figure 2 This is a side view of the cabinet of this utility model;

[0016] Figure 3 This is a schematic diagram of the interlocking component of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the interlocking component of this utility model;

[0018] Figure 5 This is a schematic diagram of the fixing sleeve structure of this utility model;

[0019] Figure 6 This is a cross-sectional schematic diagram of the fixing sleeve of this utility model;

[0020] Figure 7 This is a schematic diagram of the connection between the limiting rod and the push rod of this utility model.

[0021] In the diagram: 1. Cabinet 1; 11. Chassis 1; 2. Cabinet 2; 21. Chassis 2; 3. Interlock assembly; 31. Fixing sleeve; 32. Limiting rod; 33. Push rod; 34. Limiting sleeve; 35. Adjusting nut; 36. Universal end; 37. Return spring; 38. Limiting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figure 1-7 This utility model provides a technical solution: a novel interlocking device between two adjacent cabinets, including an interlocking component 3, a cabinet 1 and a cabinet 2. The cabinet 1 and the cabinet 2 are connected by the interlocking component 3. The interlocking component 3 enables the cabinet 1 and the cabinet 2 to alternately be in the working position, thereby preventing two handcarts from entering the working position at the same time; in case of an error, a major safety accident may occur.

[0024] Please see Figure 1 and Figure 2 Chassis vehicle 11 and chassis vehicle 21 are respectively installed on cabinet 1 and cabinet 2, and both chassis vehicle 11 and chassis vehicle 21 are equipped with handcart internal components.

[0025] Please see Figure 3-7 The interlocking assembly 3 includes a fixed sleeve 31, a limiting rod 32, and a push rod 33. The limiting rod 32, the push rod 33, and the fixed sleeve 31 are collinear, and both the limiting rod 32 and the push rod 33 are located inside the fixed sleeve 31. The fixed sleeve 31 passes through corresponding positions of cabinet 1 and cabinet 2. The limiting rod 32 and the push rod 33 are connected by threads and are respectively engaged at corresponding positions of cabinet 1 and cabinet 2. The outer diameter of the limiting rod 32 is larger than the outer diameter of the push rod 33, and the length of the push rod 33 is greater than the length of the limiting rod 32.

[0026] The end of the push rod 33 away from the limit rod 32 is threaded with a universal end 36. The universal end 36 enables the No. 2 handcart to contact the interlock component 3 in a rolling contact manner, thereby reducing the contact wear between the No. 2 handcart and the interlock component 3. This not only ensures the service life of the handcart, but also improves the performance of the interlock component 3.

[0027] Furthermore, the limiting rod 32 is movably inserted into the fixing sleeve 31. A limiting sleeve 34 is fixedly installed on one end of the fixing sleeve 31 corresponding to the limiting rod 32. An adjusting nut 35 is threadedly connected to the side of the fixing sleeve 31 away from the limiting sleeve 34. Cabinet 1 and Cabinet 2 are engaged between the limiting sleeve 34 and the adjusting nut 35 at corresponding positions. Through the threaded connection between the adjusting nut 35 and the fixing sleeve 31, rotating the adjusting nut 35 changes the distance between the adjusting nut 35 and the limiting sleeve 34, thus allowing the entire interlocking assembly 3 to be fixed to the cabinets on both sides as needed.

[0028] Please see Figure 4 and Figure 7 In this design, a limit plate 38 is provided at the end of the push rod 33 furthest from the universal joint end 36, and a return spring 37 is provided inside the fixed sleeve 31, which is sleeved on the push rod 33. The return spring 37 is located between the limit plate 38 and the fixed sleeve 31, and is located inside the fixed sleeve 31. The outer diameter of the limit plate 38 is equal to the inner diameter of the fixed sleeve 31. In this design, the return spring 37 facilitates reset, ensuring that the trolley of cabinet 1 can only be moved to the working position when the circuit breaker of cabinet 2 is in the test position, while the trolley of cabinet 1 is locked in the test position and cannot be operated when the circuit breaker of cabinet 2 is in the working position; this achieves mutual interlocking, thereby preventing two trolleys from entering the working position simultaneously, thus avoiding the risk of a major safety accident in case of an error.

[0029] Working principle: In the initial state, the distance between the push rod 33 and the limit rod 32 of this new type of interlocking device between two adjacent cabinets is at its maximum. At this time, both the #1 and #2 handcarts are in the test position. When the #2 handcart is manually cranked to put the circuit breaker of the #2 cabinet in the working position, the #1 handcart is locked in the test position and cannot be operated. Only when the circuit breaker of the #2 cabinet is in the test position can the #1 handcart be cranked to the working position. If the reset spring 37 needs to be replaced, only the adjusting nut 35 needs to be rotated so that the adjusting nut 35 and the limit rod 32 are in the test position. As the spacing of the limiting sleeves 34 increases, and the adjusting nut 35 rotates, when the adjusting nut 35 disengages from the fixed sleeve 31 and the fixed sleeve 31 slides away from the push rod 33 on the limiting rod 32, the interlock assembly 3 can then disengage from cabinet 1 and cabinet 2. After separating the push rod 33 and the limiting rod 32, the return spring 37 can be quickly removed and replaced, further preventing two handcarts from entering the working position simultaneously and causing a major safety accident, thus effectively ensuring the interlocking effect of the handcarts.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel interlocking device between two adjacent cabinets, comprising an interlocking assembly (3), a first cabinet (1) and a second cabinet (2), wherein the first cabinet (1) and the second cabinet (2) are connected by the interlocking assembly (3), and a chassis vehicle first (11) and a chassis vehicle second (21) are respectively provided on the first cabinet (1) and the second cabinet (2), and both the chassis vehicle first (11) and the chassis vehicle second (21) are provided with a handcart built-in component, characterized in that: The interlocking assembly (3) includes a fixed sleeve (31), a limiting rod (32), and a push rod (33). The limiting rod (32) and the push rod (33) are connected by threads. The limiting rod (32) and the push rod (33) are respectively engaged at corresponding positions of cabinet one (1) and cabinet two (2). The end of the push rod (33) away from the limiting rod (32) is threaded with a universal end (36). The limiting rod (32) is movably inserted into the fixed sleeve (31). The fixed sleeve (31) is fixedly installed with a limiting sleeve (34) at one end corresponding to the limiting rod (32). The side of the fixed sleeve (31) away from the limiting sleeve (34) is threaded with an adjusting nut (35). The end of the push rod (33) away from the universal end (36) is provided with a limiting plate (38). The fixed sleeve (31) is provided with a return spring (37), which is sleeved on the push rod (33).

2. The novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The center of the limiting rod (32), the push rod (33) and the fixing sleeve (31) are collinear, and the limiting rod (32) and the push rod (33) are both located inside the fixing sleeve (31).

3. The novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The corresponding positions of cabinet one (1) and cabinet two (2) are engaged between the limiting sleeve (34) and the adjusting nut (35).

4. The novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The outer diameter of the limiting rod (32) is greater than the outer diameter of the push rod (33), and the length of the push rod (33) is greater than the length of the limiting rod (32).

5. A novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The fixing sleeve (31) passes through the corresponding positions of cabinet one (1) and cabinet two (2).

6. A novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The reset spring (37) is located between the limiting plate (38) and the fixing sleeve (31), and the reset spring (37) is located inside the fixing sleeve (31).

7. A novel interlocking device between two adjacent cabinets according to claim 1, characterized in that: The outer diameter of the limiting plate (38) is equal to the inner diameter of the fixing sleeve (31).

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