Cable switching mechanism specially used for pump test bench motor

Abstract

According to the cable switching mechanism specially used for the pump test bench motor, corresponding cables can be flexibly and efficiently switched according to the specification of the test pump motor, the pump test requirement is met, the test area is obviously reduced, and a test space for future development can be reserved for a test bench. The device comprises a junction box, and is characterized by also comprising a mechanical arm, a fixed frame and a cable switching device, the fixing frame is installed on the mechanical arm, and the junction box is installed on the fixing frame. The cable switching device comprises a cable sleeve, a fixed disc and a rotating shaft; the fixed disc is rotationally mounted on the fixed frame through a rotating shaft; the cable sleeves are fixedly installed on the fixing disc, the number of the cable sleeves is multiple, and a cable of one specification is inserted into each cable sleeve.

Description

Technical Field

[0001] The utility model relates to a cable switching mechanism specially used for a motor of a pump test bench. Background Art

[0002] Pumps are widely used in daily life and industrial production. They are mainly used to transport liquids such as water, oil, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. It can be said that the pump is the heart, providing power for the materials to be delivered to various user ends. If there is a problem with the quality of the pump, the transportation system will fail at the least, and a safety accident will occur at the worst. Therefore, it is very important to conduct various performance tests on the pump before it leaves the factory.

[0003] Usually, the pump test bench needs to test various pump types 10, and the motor models that match the various pump types 10 are also numerous, such as 400 / 440V (foreign motors), 380V (conventional water pump motors), 660 / 690V (coal mine pump motors), etc. In order to meet the use of motors of different specifications, the traditional wiring method of the pump test bench is detailed in Figure 1 , one station is equipped with a motor of one specification 9, and each station is equipped with a junction box 6 and corresponding cables. The high-voltage cable is connected to a set of frequency converters 4, and then connected to multiple junction boxes 6 from the frequency converters 4. Only in this way can the various pump types 10 in the above situation be tested. However, this method will have many disadvantages: (1) There are too many test stations, which occupies too much production area of ​​the factory; (2) The amount of cables used is large, and the number of junction boxes is large, which increases the cost of test bench construction; (3) The upgrade and transformation of the test bench is limited by the factory area and the current situation, and cannot be flexibly adapted to new motor specifications that will appear in the future. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a cable switching mechanism with a reasonable structural design specifically for use with a pump test bench motor. The mechanism can flexibly and efficiently switch the corresponding cables according to the specifications of the test pump motor to meet the pump test requirements, and the test area is significantly reduced, thereby reserving test space for future development of the test bench.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a cable switching mechanism specially used for a pump test bench motor, including a junction box, characterized in that it also includes a mechanical arm, a fixed frame and a cable switching device; the fixed frame is installed on the mechanical arm, and the junction box is installed on the fixed frame; the cable switching device includes a cable casing, a fixed disk and a rotating shaft; the fixed disk is rotatably installed on the fixed frame through the rotating shaft; the cable casing is fixedly installed on the fixed disk, and there are a plurality of cable casings, and a cable of a specification is inserted in each cable casing.

[0006] The mechanical arm of the utility model comprises a rotating lifting base, a bracket and a horizontal telescopic arm; the bracket is installed on the rotating lifting base, the horizontal telescopic arm is installed on the bracket, and the fixing frame is installed on the horizontal telescopic arm.

[0007] The top of the junction box of the utility model is provided with a frequency converter access terminal, and the bottom is provided with a cable access terminal.

[0008] The cable sleeve of the utility model is arranged in a circular shape.

[0009] The cable switching device of the utility model also comprises a nameplate, which is fixed on the cable sleeve and on which the specification of the cable in the cable sleeve is arranged.

[0010] The utility model provides a two-dimensional code identifier at the bottom of the junction box, a two-dimensional code is provided on the nameplate, and the two-dimensional code identifier cooperates with the two-dimensional code.

[0011] Compared with the prior art, the utility model has the following advantages and effects:

[0012] (1) The corresponding cables can be switched flexibly and efficiently according to the specifications of the test pump motor. Only one workstation can meet the requirements of motors of various specifications. The amount of cables used is small, and only one junction box is required. The space occupied is small, it is easy to manufacture, and the cost is low, which improves the efficiency of pump testing.

[0013] (2) The utility model can flexibly install cables of new specifications to meet the use requirements of new motors, and can reserve test space for future development of the test bench.

[0014] (3) The utility model can adjust the position within a certain range and can meet the use requirements of the test pump motor in different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the traditional wiring method of the pump test bench.

[0016] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0017] Figure 3 It is a schematic structural diagram of a junction box according to an embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of a cable switching device according to an embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of the structure when the embodiment of the utility model is used. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0021] The embodiment of the utility model comprises a mechanical arm, a fixing frame 5 , a junction box 6 and a cable switching device 7 .

[0022] The mechanical arm comprises a rotating lifting base 1, a bracket 2 and a horizontal telescopic arm 3. The bracket 2 is mounted on the rotating lifting base 1, and the rotating lifting base 1 can drive the bracket 2 to rotate horizontally and lift up and down. The horizontal telescopic arm 3 is mounted on the bracket 2, and the horizontal telescopic arm 3 can be horizontally extended and retracted.

[0023] The fixing frame 5 is installed on the horizontal telescopic arm 3 of the robot arm, and the horizontal telescopic arm 3 can drive the fixing frame 5 to move horizontally.

[0024] The junction box 6 is mounted on the fixing frame 5. The top of the junction box 6 is provided with a frequency converter access terminal 61, and the bottom is provided with a cable access terminal 62. The cable drawn from the factory frequency converter 4 is connected to the frequency converter access terminal 61. The cable access terminal 62 is used to plug in motor cables of different specifications.

[0025] The cable switching device 7 includes a cable bushing 71 , a nameplate 72 , a fixing plate 73 and a rotating shaft 74 .

[0026] The fixed plate 73 is rotatably mounted on the fixed frame 5 via a rotating shaft 74 .

[0027] The cable sheath 71 is fixedly installed on the fixed plate 73. There are several cable sheaths 71 arranged in a circle. Each cable sheath 71 is inserted with a cable of one specification. Generally, several empty cable sheaths 71 can be reserved so that cables of new specifications can be installed in the future, which can reserve test space for future development of the test bench.

[0028] The nameplate 72 is fixed on the cable casing 71, and the nameplate 72 is provided with the specification of the cable in the cable casing 71. Furthermore, a two-dimensional code identifier 8 is provided at the bottom of the junction box 6, and a two-dimensional code is further provided on the nameplate 72. The two-dimensional code records the specification of the cable in the cable casing 71. The two-dimensional code identifier 8 cooperates with the two-dimensional code, and can effectively identify the specification of the access cable through the two-dimensional code, and automatically adjust the inverter to the corresponding voltage level, thereby reducing manpower and improving test efficiency.

[0029] The use process of the utility model is as follows:

[0030] When the test motor 9 is in place, the operator adjusts the lifting height of the rotary lifting base 1 and the extension length of the horizontal telescopic arm 3 by rotating the bracket 2, so that the cable switching device 7 is aligned with the wiring port of the motor 9. After that, after finding the cable of corresponding specifications by rotating the cable switching device 7, one end of the cable in the cable sleeve 71 is connected to the cable access terminal 62 of the junction box 6, and the other end is connected to the motor 9. The QR code identifier 8 identifies the specifications of the connected cable, controls the inverter 4 in the plant to adjust the voltage to the parameters required for the test, and then the test can be started.

[0031] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A cable switching mechanism dedicated to a pump test bench motor, including a junction box, characterized in that: It also includes a mechanical arm, a fixed frame and a cable switching device; the fixed frame is installed on the mechanical arm, and the junction box is installed on the fixed frame; the cable switching device includes a cable sheath, a fixed disk and a rotating shaft; the fixed disk is rotatably installed on the fixed frame through the rotating shaft; the cable sheath is fixedly installed on the fixed disk, there are several cable sheaths, and a cable of a specification is inserted in each cable sheath.

2. The cable switching mechanism dedicated to the motor of the pump test bench according to claim 1 is characterized in that: The mechanical arm comprises a rotating lifting base, a bracket and a horizontal telescopic arm; the bracket is installed on the rotating lifting base, the horizontal telescopic arm is installed on the bracket, and the fixing frame is installed on the horizontal telescopic arm.

3. The cable switching mechanism dedicated to the motor of the pump test bench according to claim 1 is characterized in that: The top of the junction box is provided with a frequency converter access terminal, and the bottom is provided with a cable access terminal.

4. The cable switching mechanism dedicated to the motor of the pump test bench according to claim 1 is characterized in that: The cable sleeves are arranged in a circular shape.

5. The cable switching mechanism dedicated to the motor of the pump test bench according to claim 1 is characterized in that: The cable switching device also includes a nameplate, which is fixed on the cable sheath and on which the specifications of the cable in the cable sheath are arranged.

6. The cable switching mechanism dedicated to the motor of the pump test bench according to claim 5 is characterized in that: A two-dimensional code identifier is arranged at the bottom of the junction box, a two-dimensional code is arranged on the nameplate, and the two-dimensional code identifier cooperates with the two-dimensional code.

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