A Tension Testing Platform for a Constant Tension Scroll Spring Compensation Device

Abstract

The present invention discloses a tension test platform for a constant-tension scroll spring compensation device, including a main frame; a horizontal slide rail is provided inside the upper end of the main frame, an activity trolley is arranged in the slide rail, both sides of the activity trolley are matched with the slide rail, a plurality of linear bearings are connected to the lower surface of the activity trolley, the linear bearings are slidably connected to linear guide rails, and both ends of the linear guide rails are connected to the inner wall of the main frame; the output tension of the scroll spring compensation device and whether the output tension can be kept stable can be measured very quickly through the activity trolley.

Description

Technical Field

[0001] The present invention relates to a tension test platform for a constant-tension scroll spring compensation device. Background Art

[0002] With the rapid development of China's railway industry, the construction of high-speed railways, intercity railways, electrified railways, and the electrification transformation of existing lines, the types of locomotives have changed to new types such as electric locomotives and multiple units. It is necessary to maintain contact between the pantograph and the catenary to ensure power supply operation. To prevent the catenary from experiencing excessive elastic deformation longitudinally or laterally, which may cause the pantograph to lose contact and the locomotive to stop operating, an elastic compensation device capable of maintaining constant tension is required to connect the carrier cable, catenary, or flexible overhead line.

[0003] The commonly used constant-tension elastic compensation device is a scroll spring compensation device. After the scroll spring compensation device is assembled, it needs to be subjected to tension testing. Only a scroll spring compensation device with a stable tension output within a certain range can be put into use after leaving the factory. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and propose a tension test platform for a constant-tension scroll spring compensation device.

[0005] A tension test platform for a constant-tension scroll spring compensation device includes a main frame; a horizontal slide rail is provided inside the upper end of the main frame, and a movable trolley is arranged in the slide rail. The two sides of the movable trolley are matched with the slide rail. A plurality of linear bearings are connected to the lower surface of the movable trolley, and the linear bearings are slidably connected to linear guide rails. Both ends of the linear guide rails are connected to the inner wall of the main frame;

[0006] An intermediate support frame is provided on the upper surface of the movable trolley. A connecting rod is provided on the intermediate support frame. The middle part of the connecting rod passes through a waist-shaped hole on the surface of the intermediate support frame. The right end of the connecting rod is connected to a pulley, and a pulling rope is sleeved outside the pulley. The left end of the connecting rod is connected to one end of a tensile force tester through a rotating shaft. The other end of the tensile force tester is connected to a traction device. The main body of the tensile force tester is connected to the upper surface of the movable trolley through a mounting bracket, and the main body of the tensile force tester is parallel to the upper surface of the movable trolley.

[0007] Preferably, the number of the linear bearings is two.

[0008] Preferably, two parallel trapezoidal reinforcing plates are provided on the surface of the movable trolley, and the two trapezoidal reinforcing plates are connected by a reinforcing rod.

[0009] Preferably, the traction device includes a servo motor and a lead screw. One end of the lead screw is connected to the tensile force tester, and the other end of the lead screw is connected to the rotating shaft of the servo motor.

[0010] Preferably, the traction device includes a motor, a wire reel, and a cable. One end of the cable is connected to a tensile force tester, and the other end of the cable is wound around the wire reel. The wire reel is connected to the rotating shaft of the motor.

[0011] Beneficial effects:

[0012] In this device, by sleeving a pulling rope on the pulley, the situation during the use of the scroll spring compensation device is simulated. When measuring the tension of the scroll spring compensation device, the stretching is like the cable to be compensated, and then driven by the traction device to measure the output tension of the scroll spring compensation device, mainly measuring the magnitude of the tension and whether the output of the tension is stable.

[0013] During the measurement, in order to adapt to the scroll spring compensation device under different working conditions, the end of the tensile force tester in this device is connected to a connecting rod through a rotating shaft. During the measurement, the output tension magnitude of the scroll spring compensation device at different angles can be simulated, and it can be ensured that the tensile force tester itself will not deflect, thus affecting the measured value. Description of the drawings

[0014] Figure 1 is a schematic structural diagram of a constant-tension scroll spring compensation device tension test platform;

[0015] Figure 2 is a front view of a constant-tension scroll spring compensation device tension test platform;

[0016] Figure 3 is a schematic internal structure diagram of a constant-tension scroll spring compensation device tension test platform;

[0017] 1. Main frame 2. Movable trolley 3. Pulling rope 4. Tensile force tester 5. Rotating shaft 6. Intermediate support frame 7. Traction device 8. Linear guide rail 9. Linear bearing. Detailed implementation manners

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in combination with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0019] As Figures 1 - 3 shown, a constant-tension scroll spring compensation device tension test platform includes a main frame 1; a horizontal slide rail is provided inside the upper end of the main frame 1, and a movable trolley 2 is provided inside the slide rail. The two sides of the movable trolley 2 are matched with the slide rail. Two linear bearings 9 are connected to the lower surface of the movable trolley 2, and the linear bearings 9 are slidably connected to the linear guide rail 8. Both ends of the linear guide rail 8 are connected to the inner wall of the main frame 1.

[0020] The upper surface of the movable trolley is provided with an intermediate support frame 6. A connecting rod is provided on the intermediate support frame 6. The middle part of the connecting rod is inserted into the waist-shaped hole on the surface of the intermediate support frame 6. The right end of the connecting rod is connected to a pulley. A pulling rope 3 is sleeved outside the pulley. The left end of the connecting rod is connected to one end of a tensile tester 4 through a rotating shaft 5. The other end of the tensile tester 4 is connected to a traction device 7. The main body of the tensile tester 4 is connected to the upper surface of the movable trolley through a mounting bracket. The main body of the tensile tester 4 is parallel to the upper surface of the movable trolley.

[0021] Two parallel trapezoidal reinforcing plates are provided on the surface of the movable trolley 2. The two trapezoidal reinforcing plates are connected by a reinforcing rod.

[0022] The traction device 7 includes a servo motor and a lead screw. One end of the lead screw is connected to the tensile tester. The other end of the lead screw is connected to the rotating shaft of the servo motor.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tension test platform for a constant tension scroll spring compensation device, characterized in that, It includes a main frame; inside the upper end of the main frame, there is a horizontal slide rail, in which there is a movable trolley. The two sides of the movable trolley match with the slide rail. The lower surface of the movable trolley is connected with several linear bearings, and the linear bearings are slidably connected to linear guide rails, and both ends of the linear guide rails are connected to the inner wall of the main frame; On the upper surface of the movable trolley, there is an intermediate support frame. On the intermediate support frame, there is a connecting rod. The middle of the connecting rod passes through an oblong hole on the surface of the intermediate support frame. The right end of the connecting rod is connected with a pulley. A pulling rope is sleeved outside the pulley. The left end of the connecting rod is connected with one end of a tensile tester through a rotating shaft. The other end of the tensile tester is connected with a traction device. The main body of the tensile tester is connected to the upper surface of the movable trolley through a mounting frame, and the main body of the tensile tester is parallel to the upper surface of the movable trolley; The traction device includes a servo motor and a lead screw. One end of the lead screw is connected with the tensile tester, and the other end of the lead screw is connected with the rotating shaft of the servo motor; The traction device includes a motor, a wire reel and a cable. One end of the cable is connected with the tensile tester, and the other end of the cable is wound around the wire reel, and the wire reel is connected with the rotating shaft of the motor.

2. The tension testing platform of a constant tension scroll spring compensation device according to claim 1, characterized in that The number of the linear bearings is two.

3. The tension testing platform of a constant tension scroll spring compensation device according to claim 1, characterized in that, On the surface of the movable trolley, there are two parallel trapezoidal reinforcing plates, and the two trapezoidal reinforcing plates are connected by a reinforcing rod.

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