Onboard frequency conversion cabinet body for frequency conversion screw machine

Abstract

The utility model discloses a machine-mounted frequency conversion cabinet for a frequency conversion screw machine, which comprises a frequency conversion cabinet body, the bottom end of the frequency conversion cabinet body is fixedly connected with a chassis adjusting device, four buffer devices are uniformly arranged below the chassis adjusting device, and the bottom end of each buffer device is provided with a self-locking universal wheel. Through the chassis adjusting device and the self-locking universal wheels, the chassis area of the cabinet body can be enlarged, the frequency conversion cabinet body can be pushed by the self-locking universal wheels for carrying, the carrying burden is reduced, and the carrying stability is improved; and through the arranged buffering device, the elasticity of a spring is matched with sliding of a buffering rod in a buffering groove, the force generated when the self-locking universal wheels make direct contact with the ground is buffered, and carrying is smoother and more comfortable.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion cabinets, in particular to an airborne frequency conversion cabinet for a frequency conversion screw machine. Background Art

[0002] The main function of the onboard frequency conversion cabinet for screw compressors is to adjust the motor speed to control the air volume and pipe network pressure of the air compressor, so as to achieve energy saving and optimize equipment performance.

[0003] However, most of the existing frequency conversion control cabinets are placed directly on the ground. When the frequency conversion control cabinet is repaired, it needs to be moved by manual transportation. Due to the large size of the frequency conversion control cabinet, it is not convenient to move the frequency conversion control cabinet. In addition, because the cabinet body is usually narrow and long, and the chassis is small, the cabinet body is very easy to tip over during transportation. Manual transportation is time-consuming and labor-intensive, which increases the workload of workers. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide an onboard frequency conversion cabinet for a frequency conversion screw machine. By means of a chassis adjustment device and self-locking universal wheels, the chassis area of ​​the cabinet can be expanded. The frequency conversion cabinet body can be pushed by the self-locking universal wheels for transportation, which not only reduces the burden of transportation but also improves the stability of transportation. By means of a buffer device, the elasticity of the spring is utilized to cooperate with the sliding of the buffer rod in the buffer groove to buffer the force of the self-locking universal wheel directly contacting the ground, making transportation smoother and more comfortable.

[0005] One of the purposes of the utility model is achieved by the following technical solution: an onboard frequency conversion cabinet for a frequency conversion screw machine, comprising: a frequency conversion cabinet body, a chassis adjustment device is fixedly connected to the bottom end of the frequency conversion cabinet body, four buffer devices are evenly arranged below the chassis adjustment device, and the bottom ends of the buffer devices are all installed with self-locking universal wheels;

[0006] The chassis adjustment device includes a U-shaped chassis, a dual-axis motor is fixedly connected to the lower surface of the U-shaped chassis, both output ends of the dual-axis motor are fixedly connected to screws, and the threads of the two screws are arranged in opposite directions, the outer walls of the screws are threadedly connected to extension plates, the inner walls of both sides of the U-shaped chassis are provided with slide grooves, the left and right ends of the extension plates are provided with sliders, and the outer walls of the sliders are slidably connected to the inner walls of the slide grooves. The chassis adjustment device and self-locking universal wheels can expand the chassis area of ​​the cabinet, and the frequency conversion cabinet body can be pushed by the self-locking universal wheels for transportation, which not only reduces the transportation burden, but also improves the transportation stability; the buffer device is provided, and the elasticity of the spring cooperates with the buffer rod to slide in the buffer groove to buffer the force of the self-locking universal wheel directly contacting the ground, making the transportation smoother and more comfortable.

[0007] According to the onboard frequency conversion cabinet for a frequency conversion screw machine, the buffer device includes a support block, a buffer groove is opened at the bottom end of the support block, a buffer rod is slidably connected to the inner wall of the buffer groove, and a spring is provided between the top end of the buffer rod and the top end of the inner wall of the buffer groove.

[0008] According to the onboard variable frequency cabinet for a variable frequency screw machine, the top ends of every two of the support blocks are fixedly connected to the lower surface of one of the extension plates.

[0009] A machine-mounted frequency conversion cabinet for a frequency conversion screw machine is provided, wherein the bottom ends of the buffer rods are fixedly connected to the top ends of the self-locking universal wheels.

[0010] According to the onboard frequency conversion cabinet for a frequency conversion screw machine, a control switch is installed on the outer wall of the frequency conversion cabinet body, and the control switch is electrically connected to the dual-axis motor.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is a three-dimensional diagram of an onboard frequency conversion cabinet for a frequency conversion screw machine of the utility model;

[0014] Figure 2 This is a perspective view of an extended airborne variable frequency cabinet for a variable frequency screw machine of the utility model;

[0015] Figure 3 This is a three-dimensional diagram of a chassis adjustment device of an onboard frequency conversion cabinet for a frequency conversion screw machine of the utility model;

[0016] Figure 4 The utility model is a structural diagram of a buffer device of an onboard variable frequency cabinet for a variable frequency screw machine.

[0017] Legend:

[0018] 1. Inverter cabinet body; 2. Chassis adjustment device; 3. Control switch; 4. Buffer device; 5. Self-locking universal wheel; 201. U-shaped chassis; 2011. Slide groove; 202. Extension plate; 2021. Slider; 203. Dual-axis motor; 204. Screw; 401. Support block; 4011. Buffer groove; 402. Buffer rod; 403. Spring. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-4 The utility model embodiment is an onboard frequency conversion cabinet for a frequency conversion screw machine, which comprises: a frequency conversion cabinet body 1, a chassis adjustment device 2 is fixedly connected to the bottom end of the frequency conversion cabinet body 1, four buffer devices 4 are evenly arranged below the chassis adjustment device 2, and the bottom ends of the buffer devices 4 are all installed with self-locking universal wheels 5;

[0021] The chassis adjustment device 2 includes a U-shaped chassis 201, a dual-axis motor 203 is fixedly connected to the lower surface of the U-shaped chassis 201, a control switch 3 is installed on the outer wall of the frequency conversion cabinet body 1, the control switch 3 is electrically connected to the dual-axis motor 203, the two output ends of the dual-axis motor 203 are fixedly connected to screws 204, and the threads of the two screws 204 are arranged oppositely, the outer walls of the screws 204 are threadedly connected to extension plates 202, the inner walls of both sides of the U-shaped chassis 201 are provided with slide grooves 2011, the left and right ends of the extension plate 202 are provided with sliders 2021, and the outer walls of the sliders 2021 are slidably connected to the inner walls of the slide grooves 2011;

[0022] The buffer device 4 includes a support block 401, the top ends of every two support blocks 401 are fixedly connected to the lower surface of an extension plate 202, a buffer groove 4011 is provided at the bottom end of the support block 401, a buffer rod 402 is slidably connected to the inner wall of the buffer groove 4011, the bottom ends of the buffer rods 402 are fixedly connected to the top end of the self-locking universal wheel 5, and a spring 403 is provided between the top end of the buffer rod 402 and the top end of the inner wall of the buffer groove 4011. By means of the chassis adjustment device 2 and the self-locking universal wheel 5, when the frequency conversion cabinet body 1 is transported, the lock of the self-locking universal wheel 5 is released, and the dual-axis motor 203 is started by the control switch 3 to drive the two screws 204 to rotate, and the two extension plates 202 are driven to move in opposite directions in cooperation with the slide groove 2011. The self-locking universal wheel 5 slides in cooperation with the movement of the extension plate 202 to expand the chassis area of ​​the cabinet. After the expansion is completed, the frequency conversion cabinet body 1 can be pushed by the self-locking universal wheel 5 to be transported, which not only reduces the burden of transportation, but also improves the stability of transportation; by means of the buffer device 4, when the self-locking universal wheel 5 rolls on an uneven ground, the elasticity of the spring 403 is used to cooperate with the buffer rod 402 to slide in the buffer groove 4011, so as to buffer the force of the self-locking universal wheel 5 directly contacting the ground, making the transportation smoother and more comfortable.

[0023] Working principle: When in use, when the frequency conversion cabinet body 1 is transported, the lock of the self-locking universal wheel 5 is released, and the dual-axis motor 203 is started by controlling the switch 3 to drive the two screws 204 to rotate, and the two extension plates 202 are driven to move oppositely in cooperation with the slide groove 2011. The self-locking universal wheel 5 slides in cooperation with the movement of the extension plate 202 to expand the chassis area of ​​the cabinet. After the expansion is completed, the frequency conversion cabinet body 1 can be pushed by the self-locking universal wheel 5 to be transported. During the transportation process, the elasticity of the spring 403 is used to cooperate with the buffer rod 402 to slide in the buffer groove 4011 to buffer the force of the self-locking universal wheel 5 directly contacting the ground, making the transportation smoother and more comfortable.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An onboard variable frequency cabinet for a variable frequency screw machine, comprising: The frequency conversion cabinet body (1) is characterized in that a chassis adjustment device (2) is fixedly connected to the bottom end of the frequency conversion cabinet body (1), four buffer devices (4) are evenly arranged below the chassis adjustment device (2), and the bottom ends of the buffer devices (4) are all installed with self-locking universal wheels (5); The chassis adjustment device (2) comprises a U-shaped chassis (201), a dual-axis motor (203) is fixedly connected to the lower surface of the U-shaped chassis (201), two output ends of the dual-axis motor (203) are fixedly connected to screw rods (204), and the threads of the two screw rods (204) are arranged opposite to each other, the outer walls of the screw rods (204) are threadedly connected to extension plates (202), the inner walls of both sides of the U-shaped chassis (201) are provided with sliding grooves (2011), the left and right ends of the extension plate (202) are provided with sliders (2021), and the outer walls of the sliders (2021) are slidably connected to the inner walls of the sliding grooves (2011).

2. The onboard frequency conversion cabinet for a frequency conversion screw machine according to claim 1, characterized in that: The buffer device (4) comprises a support block (401), a buffer groove (4011) is provided at the bottom end of the support block (401), a buffer rod (402) is slidably connected to the inner wall of the buffer groove (4011), and a spring (403) is provided between the top end of the buffer rod (402) and the top end of the inner wall of the buffer groove (4011).

3. The onboard frequency conversion cabinet for a frequency conversion screw machine according to claim 2, characterized in that: The top ends of every two of the support blocks (401) are fixedly connected to the lower surface of one of the extension plates (202).

4. The onboard frequency conversion cabinet for a frequency conversion screw machine according to claim 2, characterized in that: The bottom ends of the buffer rods (402) are fixedly connected to the top ends of the self-locking universal wheels (5).

5. The onboard frequency conversion cabinet for a frequency conversion screw machine according to claim 1, characterized in that: A control switch (3) is installed on the outer wall of the frequency conversion cabinet body (1), and the control switch (3) is electrically connected to the dual-axis motor (203).

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