Small platform for dynamic test of vertical impact of buffer

Abstract

The utility model discloses a buffer vertical impact dynamic test small platform, which comprises an installation platform, a guide column, an impact module, a lifting module, a lifting module driving structure, an electromagnet, a force sensor and a buffer displacement detection unit, the impact module and the lifting module are both installed on the guide column in a sleeving mode, the impact module is located below the lifting module, the lifting module driving structure is connected with the lifting module, the electromagnet is fixedly installed below the lifting module, the force sensor is fixedly installed below the impact module, and the force sensor is connected with the impact module. The buffer displacement detection unit is used for detecting the length change of the buffer. The small platform for the buffer vertical impact dynamic test is reasonable in structure, and can perform the buffer vertical impact dynamic test so as to obtain impact force data and length change data of the buffer.

Description

Technical Field

[0001] This utility model relates to a test platform, and in particular provides a small platform for dynamic testing of vertical impact of a buffer. Background Technology

[0002] Buffers are widely used industrial products. Their performance directly affects the operational efficiency and safety of equipment. Currently, the design, development, and testing of buffers generally employ theoretical calculations and verification through practical application. Some material-based buffers (such as rubber and polyurethane buffers) are typically tested statically using mechanical testing machines. However, structural buffers (such as hydraulic / pneumatic buffers) require testing under dynamic conditions for accurate and scientific design and manufacturing. In other words, the scientific rationality of structural buffers can only be guaranteed by accumulating data and establishing models under dynamic testing conditions.

[0003] Therefore, proposing a small-scale test platform for vertical impact dynamic testing of a buffer with a reasonable structure and convenient operation has become an urgent problem to be solved. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a small platform for dynamic vertical impact testing of buffers, so as to conduct impact tests on structural buffers under dynamic conditions and provide a large amount of test data for subsequent performance analysis of buffers.

[0005] The technical solution provided by this utility model is: a small platform for dynamic testing of vertical impact of a buffer, comprising: a mounting platform, a guide column, an impact module, a lifting module, a lifting module drive structure, an electromagnet, a force sensor, and a buffer displacement detection unit. The guide column is vertically mounted on the mounting platform. The impact module and the lifting module are both sleeved on the guide column, with the impact module located below the lifting module. The lifting module drive structure is connected to the lifting module and controls the lifting module to move up and down along the guide column. The electromagnet is fixedly mounted below the lifting module and is used to attract the impact module. The force sensor is fixedly mounted below the impact module and is used to detect the impact force of the impact module on the buffer, which is fixed above the mounting platform and located below the force sensor. The buffer displacement detection unit is used to detect changes in the length of the buffer.

[0006] Preferably, there are two guide columns spaced apart, and both the impact module and the lifting module are mounted on the two guide columns.

[0007] Further preferably, the lifting module drive structure includes a motor and a wire rope, wherein one end of the wire rope is connected to the motor, and the other end of the wire rope passes over a fixed pulley and is connected to the lifting module, and the fixed pulley is located above the lifting module.

[0008] Further preferably, the lifting module drive structure includes a motor, a wire rope, an adapter plate, a transmission chain, and a sprocket. The transmission chain consists of two chains, and the sprockets are fixedly positioned above the lifting module at intervals and corresponding to the two transmission chains. One end of the wire rope is connected to the motor, and the other end of the wire rope is connected to the two transmission chains via the adapter plate. The two transmission chains are respectively connected to the lifting module via the sprockets.

[0009] In a further preferred embodiment, a top plate is fixedly connected to the top of the guide post, a bearing seat is fixedly installed on the top plate, a rotating shaft is connected between the bearing seats, and the sprocket is installed on the rotating shaft.

[0010] Further preferably, there are two electromagnets, which are fixedly spaced apart below the lifting module.

[0011] Further preferably, the small platform for vertical impact dynamic testing of the buffer also includes a connecting plate, a guide seat, and a slide rail. The guide seat is vertically mounted on the mounting platform, and the slide rail is mounted on the guide seat and spaced apart from the buffer. The connecting plate is horizontally mounted and fixedly connected to the top of the buffer and the top of the slide rail. The buffer displacement detection unit is an encoder and rack and pinion structure. The encoder is fixedly mounted on the mounting platform, and the rack is vertically mounted on the slide rail. The encoder shaft is provided with a gear structure that meshes with the rack.

[0012] In a further preferred embodiment, the impact module is provided with locking components on both sides that cooperate with the lifting module to prevent the impact module from falling off the lifting module.

[0013] Further preferably, the small platform for vertical impact dynamic testing of the buffer also includes an operation panel, on which a control switch connected to the lifting module drive structure and the electromagnet is provided.

[0014] In a further preferred embodiment, the small platform for dynamic vertical impact testing of the buffer also includes a computer, which is connected to the force sensor and the buffer displacement detection unit to receive detection data sent by the force sensor and the buffer displacement detection unit.

[0015] The small-scale dynamic testing platform for vertical impact of the buffer provided by this utility model has a reasonable structure and is convenient for testing. It can provide a large amount of test data for the subsequent performance analysis of the buffer. Specifically: by energizing the electromagnet, the electromagnet can attract the impact module; the lifting module drive structure can drive the lifting module to rise, thereby driving the impact module to rise; by de-energizing the electromagnet, the impact module attracted by the electromagnet can be released, thereby realizing the vertical impact on the buffer; during the impact, the force sensor can detect the impact force data on the buffer, and the buffer displacement detection unit can detect the length change data of the buffer. In the later stage, by analyzing a large amount of test data (impact force data and buffer length change data), the performance parameters of the buffer can be obtained. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 A schematic diagram of the structure of the small platform for dynamic vertical impact testing of the buffer provided by this utility model;

[0018] Figure 2 Another structural schematic diagram of the small platform for dynamic vertical impact testing of the buffer provided by this utility model;

[0019] Figure 3 A partial rear view of the small platform for dynamic vertical impact testing of the buffer provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the installation of the buffer and the buffer displacement detection unit. Detailed Implementation

[0021] The present invention will be further explained below with reference to specific implementation schemes, but it is not limited to the present invention.

[0022] To complete the dynamic vertical impact test of the buffer, such as Figures 1 to 4As shown, this utility model provides a small platform for dynamic testing of vertical impact of a buffer, including: a mounting platform 1, a guide column 2, an impact module 3, a lifting module 4, a lifting module drive structure, an electromagnet 6, a force sensor 7, and a buffer displacement detection unit. The guide column 2 is vertically mounted on the mounting platform 1. The impact module 3 and the lifting module 4 are both sleeved on the guide column 2, with the impact module 3 located below the lifting module 4. The lifting module drive structure is connected to the lifting module 4 and controls the lifting module 4 to move up and down along the guide column 2. The electromagnet 6 is fixedly mounted below the lifting module 4 and is used to attract the impact module 3. The force sensor 7 is fixedly mounted below the impact module 3 and is used to detect the impact force of the impact module 3 on the buffer 10, which is fixed above the mounting platform 1 and located below the force sensor 7. The buffer displacement detection unit is used to detect the length change of the buffer 10.

[0023] The method for conducting vertical impact dynamic tests using this small platform for testing the buffer is as follows: First, the lifting module drive structure is activated, controlling the lifting module to descend until the electromagnet contacts the impact module. At this point, the electromagnet is energized and holds the impact module. Next, the lifting module drive structure is used to control the lifting module to rise to a set height. At this point, the buffer to be tested is installed on the mounting platform. Afterward, the electromagnet is de-energized, and the impact module falls freely along the guide column, impacting the buffer vertically. During the impact, the force sensor can detect the impact force data on the buffer, and the buffer displacement detection unit can detect the length change data of the buffer. Later, by analyzing a large amount of test data (impact force data and buffer length change data), the performance parameters of the buffer can be obtained. The lifting height of the lifting module and the energization / de-energization of the electromagnet can be automatically or manually controlled, which will not be elaborated here.

[0024] To ensure the stability of the impact module and the lifting module, as an improvement to the technical solution, there are two guide posts 2 that are spaced apart, and the impact module 3 and the lifting module 4 are both mounted on the two guide posts 2.

[0025] The lifting module drive structure can be any existing structure capable of controlling the lifting module's raising and lowering. As an improvement to the technical solution, the lifting module drive structure includes a motor 51 and a wire rope 52. One end of the wire rope 52 is connected to the motor 51, and the other end of the wire rope 52 passes over a fixed pulley and is connected to the lifting module 4. The fixed pulley is located above the lifting module 4. The raising and lowering of the lifting module can be controlled by the motor and the wire rope.

[0026] To ensure the stability of the improvement, as an improvement to the technical solution, such as Figures 1 to 3As shown, the lifting module drive structure includes a motor 51, a wire rope 52, an adapter plate 53, a transmission chain 54, and sprockets 55. There are two transmission chains 54. The sprockets 55 are fixed at intervals above the lifting module 4 and corresponding to the two transmission chains 54. One end of the wire rope 52 is connected to the motor 51, and the other end of the wire rope 52 is connected to the two transmission chains 54 via the adapter plate 53. The two transmission chains 54 are respectively connected to the lifting module 4 via the sprockets 55. The motor can be installed below the installation platform. The adapter plate is preferably isosceles trapezoidal (e.g., ...). Figure 3 (As shown).

[0027] As an improvement to the technical solution, such as Figures 1 to 3 As shown, a top plate 9 is fixedly connected to the top of the guide column 2, and bearing seats 91 are fixedly installed on the top plate 9. A rotating shaft 92 is connected between the bearing seats 91, and the sprocket 55 is installed on the rotating shaft 92. In order to ensure the stability of the top plate, a support rod or support column is also connected to the bottom of the top plate. Preferably, a proximity sensor is provided below the top plate to send a motor shut-off signal to the controller when the lifting module rises to the maximum height it can rise to. A proximity sensor is provided above the adapter plate to send a motor shut-off signal to the controller when the adapter plate rises to the maximum height it can rise to (i.e., when the lifting module falls to the minimum height it can fall to). The above design can prevent the lifting module from rising or falling beyond the range and realize automatic protection.

[0028] To ensure the stability of the adsorption of the impact module, as an improvement to the technical solution, such as... Figure 2 As shown, there are two electromagnets 6, which are fixed at intervals below the lifting module 4.

[0029] The buffer displacement detection unit can be any existing device capable of detecting changes in the buffer's length, as an improvement to the technical solution, such as... Figure 4As shown, the small platform for dynamic vertical impact testing of the buffer also includes a connecting plate 11, a guide seat 15, and a slide rail 12. The guide seat 15 is vertically mounted on the mounting platform 1, and the slide rail 12 is fitted onto the guide seat 15 and spaced apart from the buffer 10. The connecting plate 11 is horizontally positioned and fixedly connected to the top of the buffer 10 and the top of the slide rail 12. The buffer displacement detection unit is a structure consisting of an encoder 81 and a rack 82. The encoder 81 is fixedly mounted on the mounting platform 1, and the rack 82 is vertically mounted on the slide rail 12. The shaft of the encoder 81 is provided with a mechanism that engages with the rack 82. The gear structure, wherein the rack can be replaced with a chain, allows the slide rail to rise and fall synchronously with the buffer when the buffer length changes. The rack mounted on the slide rail drives the rotating shaft on the encoder to rotate, thereby detecting the change in buffer length. In addition, the buffer displacement detection unit can also be a displacement sensor or a distance sensor mounted on the mounting platform. When the buffer displacement detection unit is a displacement sensor, it is used to detect the displacement of the connecting plate along the axial direction of the buffer. When the buffer displacement detection unit is a distance sensor, it is used to detect the distance from the connecting plate to the connecting plate along the axial direction of the buffer.

[0030] To prevent the impact module from suddenly falling due to electromagnet failure caused by unexpected power outages, as an improvement to the technical solution, such as... Figure 1 As shown, locking members 31 that cooperate with the lifting module 4 are respectively provided on both sides of the impact module 3 to prevent the impact module 3 from falling off the lifting module 4. When the buffer is installed, the locking members can further lock the positions of the impact module and the lifting module. Before releasing the impact module, the locking members are unlocked first, and then the electromagnet is de-energized. The locking members can be any structure capable of locking the impact module and the lifting module. Figure 1 The diagram shows a structure that is locked by a locating pin.

[0031] As an improvement to the technical solution, the small platform for dynamic vertical impact testing of the buffer also includes an operation panel 13, on which a control switch connected to the lifting module drive structure and the electromagnet 6 is provided.

[0032] As an improvement to the technical solution, the small platform for dynamic vertical impact testing of the buffer also includes a computer 14. The computer 14 is connected to the force sensor 7 and the buffer displacement detection unit, and is used to receive the detection data sent by the force sensor 7 and the buffer displacement detection unit. After receiving the above data, the computer 14 can obtain the force curve and performance parameters of the buffer through software processing.

[0033] The specific embodiments of this utility model are written in a progressive manner, emphasizing the differences between each implementation scheme, and the similar parts can be referred to each other.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A small-scale platform for a vertical impact dynamic test of a bumper, characterized by, The utility model relates to a kind of shock absorber test device, including: mounting platform (1), guide column (2), impact module (3), lifting module (4), lifting module drive structure, electromagnet (6), force sensor (7) and buffer displacement detection unit, wherein, the guide column (2) is vertically installed on the mounting platform (1), the impact module (3) and lifting module (4) are both installed on the guide column (2) and the impact module (3) is below the lifting module (4), the lifting module drive structure is connected with the lifting module (4), for controlling the lifting module (4) along the guide column (2) elevating, the electromagnet (6) is fixedly installed below the lifting module (4), for adsorbing the impact module (3), the force sensor (7) is fixedly installed below the impact module (3), for detecting the impact force of impact module (3) to buffer (10) fixedly installed above the mounting platform (1) and located below the force sensor (7), the buffer displacement detection unit is used to detect the length variation of the buffer (10). The guide column (2) is two and is spaced apart, and the impact module (3) and the lifting module (4) are both installed on the two guide columns (2).

2. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The lifting module drive structure includes a motor (51) and a steel wire rope (52), wherein one end of the steel wire rope (52) is connected with the motor (51), and the other end of the steel wire rope (52) is connected with the lifting module (4) after passing through a fixed pulley.

3. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The lifting module drive structure includes a motor (51), a steel wire rope (52), an adapter plate (53), a transmission chain (54) and a chain wheel (55), wherein the transmission chain (54) is two, the chain wheel (55) is fixed above the lifting module (4) and is correspondingly arranged with the two transmission chains (54), one end of the steel wire rope (52) is connected with the motor (51), and the other end of the steel wire rope (52) is connected with the two transmission chains (54) through the adapter plate (53), and the two transmission chains (54) are respectively connected with the lifting module (4) through the chain wheel (55).

4. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The top of the guide column (2) is fixedly connected with a top plate (9), the bearing seat (91) is fixedly installed on the top plate (9), the rotating shaft (92) is connected between the bearing seat (91), and the chain wheel (55) is installed on the rotating shaft (92).

5. The small-scale platform for vertical impact dynamic test of a bumper according to claim 4, characterized in that: The electromagnet (6) is two and is spaced apart below the lifting module (4).

6. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: ​ 7. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: It further comprises a connecting plate (11), a guide seat (15) and a slide rail (12), the guide seat (15) is vertically installed on the mounting platform (1), the slide rail (12) is cooperatively installed on the guide seat (15) and is arranged in a spaced manner with the buffer (10), the connecting plate (11) is horizontally arranged and is fixedly connected with the top end of the buffer (10) and the top end of the slide rail (12), the buffer displacement detection unit is a cooperating structure of an encoder (81) and a rack (82), the encoder (81) is fixedly installed on the mounting platform (1), the rack (82) is vertically installed on the slide rail (12), and a gear structure cooperating with the rack (82) is arranged on the rotating shaft of the encoder (81).

8. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The impact module (3) is provided with a locking piece (31) on each side, which cooperates with the lifting module (4) to prevent the impact module (3) from falling off the lifting module (4).

9. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: It further comprises an operation panel (13), which is provided with a control switch connected with the lifting module driving structure and the electromagnet (6).

10. The small-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: It further comprises a computer (14) connected with the force sensor (7) and the buffer displacement detection unit, which is used for receiving the detection data sent by the force sensor (7) and the buffer displacement detection unit.

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