Electric chassis vehicle for mounting circuit breaker of power distribution cabinet

Abstract

The utility model discloses an electric chassis vehicle for installing a circuit breaker of a power distribution cabinet, which comprises a movable vehicle frame, a static vehicle frame, a screw rod rotationally connected to the static vehicle frame, a screw rod block and a power transmission mechanism, and further comprises a protective sleeve arranged between the movable vehicle frame and the static vehicle frame and used for shielding the exposed screw rod; and the assembly structure is arranged on the movable frame and the static frame and is matched with the assembly and fixation of the protective sleeve. According to the utility model, firstly, through the design of the protective sleeve and the abutting ring, dust and foreign matters are effectively prevented from entering a motion area of the screw rod, and equipment faults caused by clamping stagnation of the foreign matters are reduced, so that clean and stable operation of the screw rod is ensured, secondly, through simple knob operation, maintenance personnel can quickly detach the protective sleeve for cleaning and inspection, and the maintenance efficiency is improved. And the cleaning and the good operation state of the screw rod are ensured, the maintenance convenience is improved, the maintenance cost is reduced, and the operation efficiency of the equipment is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation accessories for circuit breakers, in particular to an electric chassis truck for installing a circuit breaker in a power distribution cabinet. Background Art

[0002] The electric chassis truck for a circuit breaker is a device used for operating a switch cabinet in a power system, mainly for realizing the electric propulsion and extraction of a circuit breaker trolley, so as to improve the safety and convenience of operation.

[0003] In the electric chassis truck for a circuit breaker, the main function of the lead screw is to convert the rotational motion of the motor into linear motion, so as to push the moving frame to move along the static frame.

[0004] In the prior art, in the electric chassis truck for installing a circuit breaker in a power distribution cabinet, if the electric chassis truck is installed in an environment with a lot of dust, such as a construction site or an industrial workshop, the lead screw exposed between the moving frame and the static frame is prone to adhering dust, and the high humidity environment will increase the adhesion of dust and foreign matters, making them more likely to adhere to the surface of the lead screw. The adhesion of dust and foreign matters will increase the friction between the lead screw and the lead screw block, resulting in increased wear of the lead screw surface. Long-term wear will reduce the accuracy of the lead screw, affecting the moving accuracy and reliability of the moving frame. Moreover, the adhesion of dust and foreign matters will also cause the lead screw to rotate smoothly, not only reducing the operation efficiency of the equipment, but also affecting the installation and operation of the circuit breaker.

[0005] Based on the above defects, a device for operating a switch cabinet in a power system is provided. Content of the Utility Model

[0006] The purpose of the utility model is to provide an electric chassis truck for installing a circuit breaker in a power distribution cabinet in order to solve the above problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric chassis truck for installing a circuit breaker in a power distribution cabinet, including a moving frame, a static frame, a lead screw rotatably connected to the static frame, a lead screw block arranged in the moving frame, and a power transmission mechanism for controlling the rotation of the lead screw, further including:

[0008] A protective sleeve, which is arranged between the moving frame and the static frame to shield the exposed lead screw;

[0009] An assembly structure, which is arranged on the moving frame and the static frame to cooperate with the assembly and fixation of the protective sleeve.

[0010] Preferably, a slide bar is fixedly arranged on the static frame, and the slide bar penetrates through the moving frame and is slidably connected to the moving frame.

[0011] Preferably, a roller is rotatably connected to the outside of the moving frame, and a rubber sleeve is sleeved on the outside of the roller.

[0012] Preferably, the protective sleeve is a corrugated pipe, and anti-collision rings are fixedly provided at both ends of the protective sleeve.

[0013] Preferably, the protective sleeve and the anti-collision rings are both formed with gaps distributed in the same straight line, and the lead screw passes through the protective sleeve through the gaps.

[0014] Preferably, the assembly structure includes an annular frame fixed to the opposite ends of the moving frame and the static frame, and a locking assembly is arranged on the annular frame.

[0015] Preferably, the locking assembly includes a bolt screwed into the annular frame. A knob is fixedly provided at one end of the bolt located outside the annular frame, and a hole groove for the bolt to be screwed into is formed inside the anti-collision ring.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] 1. In this application, through the design of the protective sleeve and the anti-collision rings, it effectively prevents dust and foreign objects from entering the movement area of the lead screw, reduces equipment failures caused by foreign object jams, and thus ensures the cleanliness and stable operation of the lead screw.

[0018] 2. In this application, through the design of the annular frame and the locking assembly (bolt and knob), through simple knob operations, maintenance personnel can quickly disassemble the protective sleeve for cleaning and inspection, ensuring the cleanliness and good operating state of the lead screw. This not only improves the convenience of maintenance, reduces maintenance costs, but also reduces equipment downtime and improves the operating efficiency of the equipment, meeting the requirements of modern industry for efficient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shows a three-dimensional structural schematic diagram of the chassis provided according to an embodiment of the present utility model;

[0020] Figure 2 Shows a structural schematic diagram between the moving frame and the static frame provided according to an embodiment of the present utility model;

[0021] Figure 3 Shows an assembly structural schematic diagram of the protective sleeve provided according to an embodiment of the present utility model;

[0022] Figure 4 Shows a three-dimensional structural schematic diagram of the anti-collision ring and the protective sleeve provided according to an embodiment of the present utility model.

[0023] Legend Explanation:

[0024] 1. Driving frame; 2. Roller; 3. Rubber sleeve; 4. Power transmission mechanism; 5. Lead screw; 6. Static frame; 7. Slide bar; 8. Protective sleeve; 9. Bracing ring; 10. Hole groove; 11. Gap; 12. Ring-shaped frame; 13. Bolt; 14. Knob. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution: an electric chassis truck for installing a circuit breaker in a power distribution cabinet, including a driving frame 1, a static frame 6, a lead screw 5 rotatably connected to the static frame 6, and a lead screw block arranged in the driving frame 1 and a power transmission mechanism 4 for controlling the rotation of the lead screw 5. It further includes:

[0027] A protective sleeve 8, which is arranged between the driving frame 1 and the static frame 6 to cover the exposed lead screw 5.

[0028] An assembly structure, which is arranged on the driving frame 1 and the static frame 6 to cooperate with the assembly and fixation of the protective sleeve 8.

[0029] The driving frame 1 is used to carry the circuit breaker and realizes the movement along the axial direction of the lead screw 5 through the cooperation of the lead screw block and the lead screw 5. The static frame 6 is fixedly installed in the power distribution cabinet to provide support for the lead screw 5 and ensure the stable movement of the driving frame 1; the lead screw 5 is driven by the power transmission mechanism 4 to drive the driving frame 1 and the circuit breaker in and out of the power distribution cabinet; the power transmission mechanism 4 provides power to drive the lead screw 5 to rotate and realizes the movement of the driving frame 1.

[0030] The power transmission mechanism 4 is a prior art and mainly consists of a motor assembly, an electromagnetic clutch, and a transmission mechanism (such as a sprocket and a chain). The motor assembly provides power. After adjusting the speed and torque through a speed reducer, the electromagnetic clutch controls the engagement and separation of the power, and then the power is transmitted to the lead screw 5 through the transmission mechanism. The rotation of the lead screw 5 drives the lead screw block and the driving frame 1 to move along its axial direction to realize the in and out operation of the circuit breaker.

[0031] To ensure the operation safety, the power transmission mechanism 4 is usually equipped with safety and interlock devices. When the circuit breaker is in the closed state, the electromagnetic clutch automatically disconnects to prevent the driving frame 1 from moving. When the earthing switch is closed, the driving frame 1 cannot enter the working position. These interlock devices are jointly realized through electrical signals and mechanical structures to prevent misoperation.

[0032] The protective sleeve 8 is arranged between the moving frame 1 and the static frame 6 and is used to cover the exposed lead screw 5, preventing dust and foreign objects from coming into contact with the lead screw 5, ensuring the surface cleanliness of the lead screw 5, maintaining a good operating state, and thus ensuring the smooth movement of the moving frame 1.

[0033] Specifically, as Figure 1 and Figure 2 shown, a slide bar 7 is fixedly arranged on the static frame 6. The slide bar 7 penetrates through the moving frame 1 and is slidably connected to the moving frame 1. A roller 2 is rotatably connected to the outside of the moving frame 1, and a rubber sleeve 3 is sleeved on the outside of the roller 2.

[0034] The slide bar 7 ensures the smooth movement of the moving frame 1 along a predetermined track. The roller 2 is rotatably connected to the outside of the moving frame 1. The setting of the rubber sleeve 3 reduces friction, improves the smoothness of movement, and reduces noise at the same time.

[0035] Specifically, as Figures 2-4 shown, both the protective sleeve 8 and the retaining ring 9 are formed with gaps 11 distributed in a straight line. The lead screw 5 passes through the protective sleeve 8 through the gaps 11. The assembly structure includes an annular frame 12 fixed at the opposite ends of the moving frame 1 and the static frame 6, and a locking assembly is arranged on the annular frame 12. The locking assembly includes a bolt 13 screwed into the annular frame 12. A knob 14 is fixedly arranged at one end of the bolt 13 located outside the annular frame 12, and a hole groove 10 for the bolt 13 to be screwed into is formed inside the retaining ring 9.

[0036] The design of the gaps 11 allows the lead screw 5 to pass through, ensuring that the lead screw 5 can rotate freely inside the protective sleeve 8, while preventing dust and foreign objects from entering. The retaining ring 9 cooperates with the protective sleeve 8 to form a stable structure, ensuring the fixation of the protective sleeve 8 between the moving frame 1 and the static frame 6.

[0037] The material selection of the retaining ring 9 includes rubber, thermoplastic elastomer (TPE), polyurethane, etc. These materials not only have good elastic recovery ability but also have characteristics such as wear resistance and corrosion resistance. The core characteristic of the elastic material is that it can deform under the action of an external force and return to its original shape after the force is removed. This characteristic enables the retaining ring 9, when covering the outside of the lead screw 5 together with the protective sleeve 8, to expand the gap 11 along with the opening of the protective sleeve 8, so as to smoothly pass through the lead screw 5. Once passing through the lead screw 5, the retaining ring 9 can elastically recover and close the gap 11. This elastic recovery ability ensures the tight fit between the protective sleeve 8 and the lead screw 5, prevents dust and foreign objects from entering, and ensures the normal rotation of the lead screw 5.

[0038] When the protective sleeve 8 and the retaining ring 9 cover the outside of the lead screw 5, by stretching the protective sleeve 8 to both sides, the retaining ring 9 is embedded into the annular frame 12. By operating the bolt 13 through the knob 14, the retaining ring 9 can be fastened on the annular frame 12, ensuring the stability and reliability of the assembly of the protective sleeve 8.

[0039] The foregoing description of the embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric chassis truck for installing a circuit breaker in a power distribution cabinet, comprising a moving vehicle frame (1), a static vehicle frame (6), a lead screw (5) rotatably connected to the static vehicle frame (6), and a lead screw block arranged in the moving vehicle frame (1) and a power transmission mechanism (4) for controlling the rotation of the lead screw (5), characterized in that, Further included are: A protective sleeve (8) which is arranged between the moving vehicle frame (1) and the static vehicle frame (6) to shield the exposed lead screw (5); An assembly structure which is arranged on the moving vehicle frame (1) and the static vehicle frame (6) and is used for the assembly and fixation in cooperation with the protective sleeve (8).

2. The electric chassis truck for installing a circuit breaker in a power distribution cabinet according to claim 1, characterized in that, A slide bar (7) is fixedly arranged on the static vehicle frame (6), and the slide bar (7) penetrates through the moving vehicle frame (1) and is slidably connected with the moving vehicle frame (1).

3. The electric chassis truck for installing a circuit breaker in a power distribution cabinet according to claim 1, characterized in that, A roller (2) is rotatably connected to the outside of the moving vehicle frame (1), and a rubber sleeve (3) is sleeved on the outside of the roller (2).

4. The electric chassis truck for installing a circuit breaker in a power distribution cabinet according to claim 1, characterized in that, The protective sleeve (8) is a corrugated pipe, and two ends of the protective sleeve (8) are fixedly provided with abutting rings (9).

5. The electric chassis truck for installing a circuit breaker in a power distribution cabinet according to claim 4, wherein, The protective sleeve (8) and the abutting rings (9) are both formed with gaps (11) distributed in a straight line, and the lead screw (5) passes through the protective sleeve (8) through the gaps (11).

6. The electric chassis truck for installing a circuit breaker in a power distribution cabinet according to claim 5, wherein The assembly structure includes an annular frame (12) fixed to the opposite ends of the moving vehicle frame (1) and the static vehicle frame (6), and a locking assembly is arranged on the annular frame (12).

7. The electric chassis truck for installing the circuit breaker of the power distribution cabinet according to claim 6, characterized in that, The locking assembly includes a bolt (13) screwed into the annular frame (12). A knob (14) is fixedly arranged at one end of the bolt (13) located outside the annular frame (12), and a hole groove (10) for the bolt (13) to be screwed into is formed inside the abutting ring (9).

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