A test fixture for subway screen door machine system

Abstract

The present invention relates to a test fixture for a subway screen door machine system. The subway screen door machine system to be tested includes a movable track, a drive motor, a door body hanger, a transmission component, and a door controller. The test fixture includes a fixture bracket and two counterweights. The fixture bracket includes a horizontal fixed rod and multiple vertical support rods. The horizontal fixed rod is installed across the multiple vertical support rods. The movable track is installed on the horizontal fixed rod. The two counterweights are respectively connected to the lower ends of the door body hanger. Compared with the prior art, the present invention achieves the testing of different models of subway screen door machine systems through the provision of the fixture bracket and the counterweights. By replacing the physical screen door body in the traditional method with the counterweight, the overall volume of the test fixture is effectively reduced, so that multiple units can be arranged in a limited factory space, achieving batch stability testing and improving testing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of rail transit testing, and in particular to a testing tool for a subway screen door machine system. Background Art

[0002] Rail transit is an essential means of transportation for modern people. Platform screen doors (PSMs) are installed at train (subway) platforms to prevent passengers from falling onto the tracks and improve train safety. These doors open upon arrival and close simultaneously with the train's doors. Due to the frequent and long operating hours of rail transit, each PSM door is constantly opened and closed throughout the day, placing high demands on the design and operational stability of the PSM door operator system.

[0003] Currently, stability testing of platform screen door (PSD) operator systems typically involves a model construction method. This involves constructing a simulated platform screen door within a station. The system is then operated, causing the PSD door to open and close repeatedly a certain number of times to complete the stability test. However, existing methods have the following issues: The model construction method requires a large amount of space, and the PSD doors required are all solid, with high height and width requirements. Consequently, only one door operator system can be tested at a time, making it unsuitable for large-scale system testing. This leads to high testing costs, difficulty, and inefficiency. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a test tool for a subway screen door machine system to improve the efficiency and convenience of the test.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A test fixture for a subway screen door machine system, the subway screen door machine system under test includes a moving track, a drive motor, a door body hanger, a transmission component and a door controller, the door controller is connected to the door body hanger through the drive motor and the transmission component, the door body hanger includes a first hanger and a second hanger, and is respectively installed at the two ends of the moving track, driven by the drive motor, the first hanger and the second hanger slide toward each other along the moving track toward the center of the track or slide away from each other toward the two ends of the track, the test fixture includes a fixture bracket and two counterweights, the fixture bracket includes a horizontal fixing rod and multiple vertical support rods, the horizontal fixing rod is installed across the multiple vertical support rods, the moving track is installed on the horizontal fixing rod, and the two counterweights are respectively connected to the lower ends of the first hanger and the second hanger.

[0007] Furthermore, each counterweight block includes a main body, a buffer and several counterweights, the main body is connected to the first hanging member or the second hanging member, the counterweights are detachably installed on both sides of the main body, the buffer is installed on one side of the counterweight, and the sides of the two counterweights with the buffer are opposite to each other.

[0008] Furthermore, the main body and the counterweight are connected by bolts.

[0009] Furthermore, the buffer component is a buffer rod, one end of which is a threaded end. A threaded hole is provided on one side of the main body, and the threaded end is screwed into the threaded hole. The corresponding positions of the threaded holes on the two counterweights are staggered up and down, so that the buffer rods on the two counterweights are staggered with each other; when the first hanging component and the second hanging component of the subway screen door machine system under test slide toward each other in the center of the track, the suspended ends of the two staggered buffer rods respectively press against one side end of the other counterweight.

[0010] Furthermore, the horizontal fixing rod includes a first connecting part and a second connecting part, the first connecting part is vertically connected to the second connecting part, so that the cross-section of the horizontal fixing rod is L-shaped, the first connecting part is a tubular structure with openings at both ends, and the cables of the subway screen door machine system under test are arranged in the tubular structure.

[0011] Furthermore, the weight of each counterweight is equal to the actual weight of the subway platform screen door.

[0012] Furthermore, the tooling bracket also includes a horizontal protection rod, which is installed across multiple vertical support rods and is located at the lower end of the counterweight block. The cross-section of the horizontal protection rod is concave, and the width of the concave part is greater than the width of the counterweight block.

[0013] Furthermore, a vertical sliding groove is provided on the vertical support rod, and the horizontal protection rod is connected to the sliding groove by bolts, so that the height of the horizontal protection rod can be adjusted up and down along the sliding groove.

[0014] Furthermore, it includes at least two vertical support rods.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention realizes the test of the subway screen door machine system through the arrangement of the tooling bracket and the counterweight block. The counterweight block replaces the physical screen door body in the traditional method, effectively reducing the overall volume of the test tooling, so that multiple units can be arranged in a limited factory space, realizing batch stability testing and improving test efficiency.

[0017] 2. The counterweight block of the present invention includes a main body and several counterweights. The combination of the counterweight and the main body can facilitate the weight adjustment of the counterweight block so that it is equal to the weight of different types of shielding doors, thereby improving the versatility of the test and being adaptable to shielding doors of various types. At the same time, the counterweights are detachably installed on both sides of the main body, so that the weight distribution of the counterweight block is balanced, which is conducive to the authenticity and accuracy of the test.

[0018] 3. The counterweight also includes a buffer, which can be a buffer rod. The buffer is used to adjust the distance between the two counterweights to simulate the impact contact of a real screen door when closing, making the test results more accurate. In addition, the buffer can be adjusted in length to match the counterweight to the width of different screen doors.

[0019] 4. The cross section of the horizontal fixing rod of the present invention is L-shaped, and a tubular structure is provided inside for arranging and hiding cables, making the assembly of the test tooling and the shield door machine system easier.

[0020] 5. A horizontal protective rod that can be moved up and down is also provided on the tooling bracket to protect the counterweight block to prevent it from falling and improve safety. At the same time, it is convenient to promptly detect any tilt of the counterweight block during operation, simulating the role of the track groove under the shield door, making the test more realistic. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of this embodiment.

[0022] Figure 2 This is a structural diagram from another angle of this embodiment.

[0023] Figure 3 Schematic diagram of the structure of the counterweight.

[0024] Figure numerals: 11. Moving track, 12. Driving motor, 13. First hanging member, 14. Second hanging member, 21. Tooling bracket, 211. Horizontal fixing rod, 211a. First connecting part, 211b. Second connecting part, 212. Vertical support rod, 212a. Slide groove, 213. Horizontal protection rod, 22. Counterweight block, 221. Main body, 222. Buffer member, 222a. Buffer rod, 223. Counterweight member. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0026] like Figure 1 and Figure 2As shown, this embodiment provides a test fixture for a subway platform screen door machine system.

[0027] The subway screen door operator system under test includes a moving track 11, a drive motor 12, a first hanger 13, a second hanger 14, a transmission mechanism, and a door controller (the transmission mechanism and door controller are not shown). The door controller is connected to the first and second hangers 13, 14 via the drive motor 12 and the transmission mechanism. The first and second hangers 13, 14 are mounted at either end of the moving track 11. Driven by the drive motor 12, they slide along the moving track 11 toward the center or away from each other.

[0028] The test fixture includes a fixture bracket 21 and two counterweights 22. The fixture bracket 21 includes a horizontal fixing rod 211, a horizontal protective rod 213, and multiple vertical support rods 212. In this embodiment, two vertical support rods 212 are used, with a horizontal base provided at the bottom of the vertical support rods 212. The horizontal base and the vertical support rods 212 together form an inverted T-shape to support the entire test fixture. The horizontal fixing rod 211 is installed across the tops of the two vertical support rods 212, and the mobile track 11 of the subway screen door machine system is installed on the horizontal fixing rod 211. Specifically, the horizontal fixing rod 211 includes a first connecting portion 211a and a second connecting portion 211b. The first connecting portion 211a is perpendicularly connected to the second connecting portion 211b, resulting in an L-shaped cross-section of the horizontal fixing rod 211, wherein the first connecting portion 211a is the horizontal portion of the L-shape and the second connecting portion 211b is the vertical portion of the L-shape. The mobile track 11 is installed on the inner side of the second connecting portion 211b. At the same time, the first connecting portion 211a is a tubular structure with both ends open, and the cables of the tested subway platform door machine system are arranged in the tubular structure, which plays a role in hiding the cables.

[0029] The two counterweights 22 are respectively connected to the lower ends of the first hanging member 13 and the second hanging member 14. In this embodiment, each counterweight 22 is connected to two first hanging members 13 or two second hanging members 14 and is fixed with bolts.

[0030] The horizontal protection rod 213 is parallel to the horizontal fixing rod 211, and both are fixedly connected to the two vertical support rods 212. The horizontal protection rod 213 is located at the lower end of the counterweight 22. At the same time, the cross section of the horizontal protection rod 213 is concave, and the width of the concave part is greater than the width of the counterweight 223, so that the lower end of the counterweight 22 can be located in the concave part. Figure 2For ease of illustration, only half of the horizontal protection rod 213 is shown. A vertical slot 212a is provided on the vertical support rod 212, and the horizontal protection rod 213 is bolted to the slot 212a. This allows the horizontal protection rod 213 to be adjusted up and down along the slot 212a to accommodate counterweights 22 of varying sizes and heights. The horizontal protection rod 213 provides some protection for the counterweight 22, preventing it from falling and improving safety. Furthermore, the horizontal protection rod 213 facilitates the timely detection of any skew in the counterweight 22 during operation, simulating the function of the track groove beneath the screen door and ensuring that the test results are consistent with actual operating conditions.

[0031] like Figure 3 As shown, each counterweight block 22 includes a main body 221, a buffer 222, and a plurality of counterweights 223. Each component of the counterweight block 22 can be made of iron or stainless steel. The upper end of the main body 221 is connected to the first hanger 13 or the second hanger 14 by bolts. The counterweights 223 are detachably mounted on both sides of the main body 221. The main body 221 is rectangular in shape, with bolt holes provided on both sides of the main body 221; the counterweights 223 are provided with through holes, and the counterweights 223 are fixed to the main body 221 by bolts passing through the through holes. In this embodiment, two counterweights 223 are installed on each side of the main body 221 to fine-tune the overall weight of the counterweight block 22 to match the weight of different models of shielding doors, thereby improving the applicability of the test fixture. The counterweight 223 is detachably mounted on both sides of the main body 221, so that the weight of the counterweight 22 is evenly distributed, ensuring that the force applied to the first hanging member 13 or the second hanging member 14 is consistent with the force applied to the hanging member when hanging a real screen door. The buffer 222 is mounted on one side of the counterweight 22, such as Figure 1 As shown, the two counterweights 22 have buffer members 222 on one side facing each other. The buffer members 222 can be various detachable modules. In this embodiment, the buffer member 222 adopts a buffer rod 222a. One end of the buffer rod 222a is a threaded end, and a threaded hole is provided on one side of the main body 221, and the threaded end is screwed into the threaded hole. The length of the buffer rod 222a can be adjusted according to the depth of the threaded end screwed into the threaded hole, so that the counterweight 22 can match the width of different models of shielding doors. A rubber head can also be provided on the top of the buffer rod 222a, and a scale can be set on the rod body to make the length adjustment more precise.

[0032] The threaded holes on the two counterweights 22 are staggered, causing the buffer rods 222a on the two counterweights 22 to intersect. When the first and second hangers 13, 14 of the subway platform door operator system under test slide toward the center of the track, the suspended ends of the two intersecting buffer rods 222a contact one side of the other counterweight 22. The arrangement of the buffer rods 222 adjusts the spacing between the two counterweights 22, simulating the impact contact of a real platform door during closing, resulting in more accurate test results.

[0033] The working process of this embodiment is as follows: the subway platform screen door machine system under test is installed on the tooling bracket 21; a counterweight block 22 is selected according to the platform screen door model required for the test, and a corresponding counterweight member 223 is installed on the counterweight block 22 to adjust the weight so that it is completely consistent with the weight of the platform screen door; then, the length of the buffer member 222 is adjusted according to the actual width of the platform screen door so that it is consistent with the spacing width of the platform screen door, and the adjusted counterweight block 22 is installed on the first hanger 13 and the second hanger 14; secondly, the height of the protective horizontal rod is adjusted so that its recessed portion is located at the lower end of the counterweight block 22; finally, the subway platform screen door machine system under test is opened for an opening and closing test. Under the action of the drive motor 12 and the door controller, the counterweight block 22 slides toward the center of the track or away from the two ends of the track along the movable track 11, simulating the opening and closing of the actual platform screen door, thereby completing the stability test.

[0034] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A test fixture for a subway screen door machine system, wherein the subway screen door machine system to be tested comprises a moving track (11), a driving motor (12), a door body hanger, a transmission component and a door controller, wherein the door controller is connected to the door body hanger via the driving motor (12) and the transmission component, wherein the door body hanger comprises a first hanger (13) and a second hanger (14), and is respectively mounted at both ends of the moving track (11), wherein the first hanger (13) and the second hanger (14) slide toward the center of the track or slide away from each other toward the two ends of the track along the moving track (11) under the drive of the driving motor (12), wherein the test fixture comprises a moving track (11), wherein the first hanger (13) and the second hanger (14) slide toward each other toward the center of the track or slide away from each other toward the two ends of the track. The test fixture comprises a fixture bracket (21) and two counterweights (22), the fixture bracket (21) comprises a horizontal fixing rod (211) and a plurality of vertical support rods (212), the horizontal fixing rod (211) is mounted across the plurality of vertical support rods (212), the movable track (11) is mounted on the horizontal fixing rod (211), and the two counterweights (22) are respectively connected to the lower ends of the first hanging member (13) and the second hanging member (14); Each counterweight (22) includes a main body (221), a buffer (222) and a plurality of counterweights (223), wherein the main body (221) is connected to the first hanging member (13) or the second hanging member (14), the counterweights (223) are detachably mounted on both sides of the main body (221), and the buffer (222) is mounted on one side of the counterweight (22), and the sides of the two counterweights (22) with the buffer (222) are opposite to each other; The buffer member (222) is a buffer rod (222a), one end of which is a threaded end. A threaded hole is provided on one side of the main member (221), and the threaded end is screwed into the threaded hole. The threaded holes on the two counterweights (22) are staggered at corresponding positions up and down, so that the buffer rods (222a) on the two counterweights (22) are staggered. When the first hanging member (13) and the second hanging member (14) of the tested subway screen door system slide toward the center of the track, the suspended ends of the two staggered buffer rods (222a) respectively abut against one side end of the other counterweight (22).

2. The test fixture for a subway screen door machine system according to claim 1, characterized in that: The main body (221) and the counterweight (223) are connected via bolts.

3. The test fixture for a subway screen door machine system according to claim 1, characterized in that: The horizontal fixing rod (211) comprises a first connecting portion (211a) and a second connecting portion (211b), wherein the first connecting portion (211a) is vertically connected to the second connecting portion (211b), so that the cross section of the horizontal fixing rod (211) is L-shaped, and the first connecting portion (211a) is a tubular structure with both ends open, and the cables of the tested subway screen door machine system are arranged in the tubular structure.

4. The test fixture for a subway screen door machine system according to claim 1, characterized in that: The weight of each counterweight (22) is equal to the actual weight of the subway screen door.

5. The test fixture for a subway screen door machine system according to claim 1, characterized in that: The tooling bracket (21) further includes a horizontal protection rod (213), which is installed across the plurality of vertical support rods (212) and is located at the lower end of the counterweight (22). The cross-section of the horizontal protection rod (213) is concave, and the width of the concave portion is greater than the width of the counterweight (22).

6. The test fixture for a subway screen door machine system according to claim 5, characterized in that: The vertical support rod (212) is provided with a vertical sliding groove (212a), and the horizontal protection rod (213) is connected to the sliding groove (212a) by bolts, so that the height of the horizontal protection rod (213) can be adjusted up and down along the sliding groove (212a).

7. The test fixture for a subway screen door machine system according to claim 1, characterized in that: At least two vertical support rods (212) are included.

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