Large platform for dynamic test of vertical impact of buffer

Abstract

The utility model discloses a buffer vertical impact dynamic test large-scale platform, which comprises an upper installation platform, a lower installation platform, a plurality of guide columns, an impact module, a balancing weight, an electromagnet, a motor, a force sensor and a buffer displacement detection unit, the impact module is installed on the guide column in a sleeving mode, the balancing weight is fixedly installed above the impact module, the motor is fixedly installed on the upper installation platform, an output shaft of the motor is connected with the electromagnet through a transmission chain, the electromagnet is located over the balancing weight, and the force sensor is fixedly installed below the impact module. The buffer displacement detection unit is used for detecting the length change of the buffer. The buffer vertical impact dynamic test large-scale platform is reasonable in structure, and can carry out a buffer vertical impact dynamic test so as to obtain impact force data and buffer length change data.

Description

TECHNICAL FIELD

[0001] The utility model relates to a test platform, provide a large -scale platform of buffer vertical impact dynamic test especially. BACKGROUND

[0002] Buffer is a kind of widely used industrial products.The performance of buffer directly influences the running effect and safety of equipment.Currently, the design development and inspection of buffer generally adopt the method of theoretical calculation and actual use effect verification to solve.Some material class buffers (such as rubber and polyurethane buffer) are usually statically inspected by mechanical testing machine.However, structural class buffer (such as hydraulic liquid gas buffer) needs to be tested and inspected under dynamic condition to accurately and scientifically design and manufacture.That is to say, only when structural class buffer accumulates data under dynamic test working condition and establishes model, the scientific rationality of it can be guaranteed.

[0003] Therefore, to provide a kind of large -scale platform of buffer vertical impact dynamic test with reasonable structure and convenient operation becomes an urgent problem to be solved. UTILITY MODEL CONTENT

[0004] In view of this, the utility model aims at providing a kind of large -scale platform of buffer vertical impact dynamic test to carry out impact test of structural class buffer under dynamic condition and provide a large amount of test data for performance analysis of buffer in later period.

[0005] The utility model provides technical scheme: a kind of large -scale platform of buffer vertical impact dynamic test, comprising: upper installation platform, lower installation platform, guide column, impact module, counterweight, electromagnet, motor, force sensor and buffer displacement detection unit, wherein, the guide column is multiple and vertically installed between the upper installation platform and lower installation platform, the impact module is installed on the guide column, the counterweight is fixedly installed above the impact module, the motor is fixedly installed on the upper installation platform and its output shaft is connected with the electromagnet by transmission chain, the electromagnet is located directly above the counterweight, for adsorbing the counterweight, the force sensor is fixedly installed below the impact module, for detecting the impact force of the impact module to the buffer installed on the lower installation platform, the buffer displacement detection unit is used to detect the length variation of the buffer.

[0006] Preferably, the guide column is four and surrounds a rectangular space, the impact module is installed on four guide columns, and the counterweight is located in the rectangular space.

[0007] Further preferably, the buffer displacement detection unit is a displacement sensor, a distance sensor or an encoder combined with a rack structure.

[0008] Further preferably, two reinforcing support columns are fixedly connected between the upper mounting platform and the lower mounting platform, and are respectively located on two sides of the counterweight. Vertical racks are arranged on outer sides of the two reinforcing support columns. A clamping piece is arranged on an outer side of each vertical rack. The clamping piece is connected to the impact module through a connecting plate. A pawl is arranged at a front end of the clamping piece, and can be inserted into or withdrawn from the vertical rack.

[0009] Further preferably, the clamping piece comprises a fixed support, a rotating shaft, a clamping block, and a clamping block driving structure. The two fixed supports are fixedly installed on the connecting plate. The rotating shaft is installed on the two fixed supports. The clamping block is installed on the rotating shaft. The pawl is arranged at a front end of the clamping block. The clamping block driving structure is connected to the clamping block, and is used to drive the clamping block to rotate around the rotating shaft, so as to make the pawl be inserted into or withdrawn from the vertical rack.

[0010] Further preferably, the clamping block driving structure comprises a telescopic rod, a linkage plate, and a limiting insertion rod. The telescopic rod is fixed to the connecting plate. One end of the linkage plate is hingedly connected to the telescopic rod, and the other end is hingedly connected to the rotating shaft. The linkage plate is connected to the clamping block, and is used to drive the clamping block to rotate around the rotating shaft under the driving of the telescopic rod. The limiting insertion rod is installed on the clamping block, and can be inserted into a corresponding hole arranged on the connecting plate when the pawl is inserted into the vertical rack.

[0011] Further preferably, a bumper mounting seat is slidably arranged on the lower mounting platform, and is used to fixedly install a bumper.

[0012] Further preferably, a hook rib is connected to a lower side of the lower mounting platform.

[0013] Further preferably, the large-scale platform for vertical impact dynamic test of a bumper further comprises an operation panel. Control switches connected to the electromagnet and the motor are arranged on the operation panel.

[0014] Further preferably, the large-scale platform for vertical impact dynamic test of a bumper further comprises a computer. The computer is connected to the force sensor and the bumper displacement detection unit, and is used to receive detection data sent by the force sensor and the bumper displacement detection unit.

[0015] The large-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 counterweight; by driving the electromagnet upward through the motor, the counterweight and impact module can be raised; by de-energizing the electromagnet, the counterweight attracted by the electromagnet can be released, and the counterweight and impact module can perform a vertical impact on the buffer; during the impact, the impact force data on the buffer can be detected by the force sensor, and the buffer length change data can be detected by the buffer displacement detection unit. 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 large-scale platform for dynamic vertical impact testing of the buffer provided by this utility model;

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

[0019] Figure 3 This is a schematic diagram of the snap-fit ​​connector. Detailed Implementation

[0020] The present invention will be further explained below with reference to specific implementation schemes, but it is not limited to the present invention.

[0021] To complete the dynamic vertical impact test of the buffer, such as Figures 1 to 3 As shown, this utility model provides a large-scale platform for dynamic testing of vertical impact of a buffer, including: an upper mounting platform 1, a lower mounting platform 2, guide columns 3, an impact module 4, a counterweight 5, an electromagnet 6, a motor 7, a force sensor 8, and a buffer displacement detection unit 9. Multiple guide columns 3 are vertically installed between the upper mounting platform 1 and the lower mounting platform 2. The impact module 4 is sleeved on the guide columns 3. The counterweight 5 is fixedly installed above the impact module 4. The motor 7 is fixedly installed on the upper mounting platform 1, and its output shaft is connected to the electromagnet 6 via a transmission chain 10 to control the lifting and lowering of the electromagnet. The electromagnet 6 is located directly above the counterweight 5 and is used to attract the counterweight 5. The force sensor 8 is fixedly installed below the impact module 4 and is used to detect the impact force of the impact module 4 on the buffer 11 installed on the lower mounting platform 2. The buffer displacement detection unit is used to detect the length change of the buffer 11.

[0022] The method for performing vertical impact dynamic test on the large platform for vertical impact dynamic test of the buffer is as follows: first, the motor is started, the transmission chain is released, the electromagnet is lowered to contact with the counterweight, at this time, the electromagnet is powered on to attract the counterweight; then, the motor is reversely driven to drive the counterweight and the impact module to rise to a set height through the electromagnet, at this time, the buffer to be detected is installed on the lower mounting platform; then, the electromagnet is powered off, the counterweight and the impact module freely fall along the guide column to vertically impact the buffer, during the impact process, the impact force data of the buffer can be detected through the force sensor, the length change data of the buffer can be detected through the buffer displacement detection unit, and the performance parameters of the buffer can be obtained by analyzing a large amount of test data (impact force data and length change data) in the later stage, wherein the lifting height of the electromagnet and the on-off of the electromagnet can be automatically controlled or manually controlled, which will not be described herein.

[0023] As an improvement of the technical scheme, as shown in Figure 1 、 Figure 2 The guide column 3 is four and surrounds a rectangular space, the impact module 4 is sleeved and installed on the four guide columns 3, and the counterweight 5 is located in the rectangular space.

[0024] As an improvement of the technical scheme, the buffer displacement detection unit 9 is a displacement sensor, a distance sensor or an encoder combined with a rack structure, when the displacement sensor is used, it can be fixedly installed beside the buffer to detect the axial displacement (i.e. the extension length) of the buffer; when the distance sensor is used, it can be fixedly installed beside the buffer to detect the axial distance from the buffer top before and after the buffer extends and retracts, and the length change of the buffer can be obtained by subtracting the two distances; when the encoder combined with the rack structure is used, the encoder can be installed below the impact module, and the length change data of the buffer can be obtained by cooperating with the vertically arranged rack, Figure 2 The position of the encoder in the buffer displacement detection unit 9 when the buffer displacement detection unit is the encoder combined with the rack structure is shown in

[0025] In order to prevent the counterweight and the impact module from suddenly falling due to the failure of the electromagnet caused by accidental power failure and improve safety, as an improvement of the technical scheme, as shown in Figures 1 to 3As shown, the upper mounting platform 1 and the lower mounting platform 2 are also fixedly connected with two reinforcing support columns 12, which are respectively located on the two sides of the counterweight 5, and the outer sides of the two reinforcing support columns 12 are provided with vertical racks 13, and the outer sides of the vertical racks 13 are provided with clamping pieces 14, the clamping pieces 14 are connected with the impact module 4 through a connecting plate 15, and the front end of the clamping piece 14 is provided with a pawl (not shown in the figure) which can be inserted into or withdrawn from the vertical rack 13, and by inserting the pawl into the vertical rack, the position of the counterweight and the impact module can be locked, and in addition, when the buffer displacement detection unit is an encoder combined with a rack structure, the rack matched with the encoder in the buffer displacement detection unit 9 can be arranged on the inner side of the reinforcing support column.

[0026] The clamping piece can only realize cooperation with the vertical rack, and then realize locking and unlocking of the impact module, and as a technical improvement, as shown in Figure 3 The clamping piece 14 includes a fixed support 141, a rotating shaft 142, a clamping block 143 and a clamping block driving structure, wherein the fixed support 141 is two and is fixedly installed on the connecting plate 15, the rotating shaft 142 is installed on the two fixed supports 141, the clamping block 143 is installed on the rotating shaft 142, the pawl is arranged at the front end of the clamping block 143, and the clamping block driving structure is connected with the clamping block 143 for driving the clamping block 143 to rotate around the rotating shaft 142, so that the pawl is inserted into or withdrawn from the vertical rack 13.

[0027] As a technical improvement, as shown in Figure 3 The clamping block driving structure includes a telescopic rod 144, a linkage plate 145 and a limiting plug rod 146, wherein the telescopic rod 144 is fixed on the connecting plate 15, one end of the linkage plate 145 is hinged with the telescopic rod 144, the other end is hinged with the rotating shaft 142, the linkage plate 145 is connected with the clamping block 143, and is used for driving the clamping block 143 to rotate around the rotating shaft 142 under the driving of the telescopic rod 143, as shown in Figure 3 The linkage plate 145 and the clamping block 143 are connected through a connecting rod 147, and can also be connected through bolts, the limiting plug rod 146 is installed on the clamping block 143 and can be inserted into the corresponding hole provided on the connecting plate 15 when the pawl is inserted into the vertical rack 13, so as to lock the position of the pawl and limit the falling of the counterweight and the impact module.

[0028] As a technical improvement, as shown in Figure 1 , Figure 2As shown, the lower mounting platform 2 is slidably provided with a bumper mounting seat 16 for fixing and mounting the bumper 11, when the bumper is mounted, the bumper mounting seat is slid out for mounting, and after mounting is completed, it is pushed in, wherein the lower mounting platform is preferably provided with a bumper mounting seat positioning module for limiting the push-in position of the bumper mounting seat.

[0029] As an improvement of the technical scheme, as shown in Figure 1 、 Figure 2 As shown, the lower mounting platform 2 is connected with a hook rib 17 below, which is used to cooperate with the concrete to realize the fixation of the platform on the concrete foundation.

[0030] As an improvement of the technical scheme, the large-scale platform for vertical impact dynamic test of the bumper further comprises an operation panel 18, which is provided with control switches connected with the electromagnet 6 and the motor 7.

[0031] As an improvement of the technical scheme, the large-scale platform for vertical impact dynamic test of the bumper further comprises a computer 19 connected with the force sensor 8 and the bumper displacement detection unit 9, for receiving the detection data sent by the force sensor 8 and the bumper displacement detection unit 9, and when the computer receives the above data, the force curve and performance parameters of the bumper can be obtained through software processing.

[0032] The specific embodiments of the utility model are written in a progressive manner, and the differences between various embodiments are emphasized, and the similar parts can be referred to each other.

[0033] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A large-scale platform for a vertical impact dynamic test of a bumper, characterized by comprising: The application relates to a shock test device, which comprises an upper mounting platform (1), a lower mounting platform (2), guide columns (3), an impact module (4), a counterweight (5), an electromagnet (6), a motor (7), a force sensor (8) and a buffer displacement detection unit (9), wherein the guide columns (3) are vertically arranged between the upper mounting platform (1) and the lower mounting platform (2), the impact module (4) is sleeved on the guide columns (3), the counterweight (5) is fixedly arranged above the impact module (4), the motor (7) is fixedly arranged on the upper mounting platform (1) and its output shaft is connected with the electromagnet (6) through a transmission chain (10), the electromagnet (6) is located directly above the counterweight (5) and is used for adsorbing the counterweight (5), the force sensor (8) is fixedly arranged below the impact module (4) and is used for detecting the impact force of the impact module (4) on a buffer (11) arranged on the lower mounting platform (2), and the buffer displacement detection unit (9) is used for detecting the length change of the buffer (11). The guide columns (3) are four in number and form a rectangular space, the impact module (4) is sleeved on the four guide columns (3), and the counterweight (5) is located in the rectangular space.

2. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The buffer displacement detection unit (9) is a displacement sensor, a distance sensor or a combination of an encoder and a rack structure.

3. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, wherein: Two reinforcing support columns (12) are further fixedly connected between the upper mounting platform (1) and the lower mounting platform (2), the two reinforcing support columns (12) are respectively located on the two sides of the counterweight (5), vertical racks (13) are arranged on the outer sides of the two reinforcing support columns (12), clamping pieces (14) are arranged on the outer sides of the vertical racks (13), the clamping pieces (14) are connected with the impact module (4) through connecting plates (15), and pawls are arranged at the front ends of the clamping pieces (14) and can be inserted into or withdrawn from the vertical racks (13).

4. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, wherein: The clamping piece (14) comprises fixed supports (141), rotating shafts (142), clamping blocks (143) and clamping block driving structures, the two fixed supports (141) are fixedly arranged on the connecting plate (15), the rotating shafts (142) are arranged on the two fixed supports (141), the clamping blocks (143) are arranged on the rotating shafts (142), the pawls are arranged at the front ends of the clamping blocks (143), the clamping block driving structures are connected with the clamping blocks (143) and are used for driving the clamping blocks (143) to rotate around the rotating shafts (142), so that the pawls are inserted into or withdrawn from the vertical racks (13).

5. The large-scale platform for vertical impact dynamic test of a bumper according to claim 4, characterized in that: ​ 6. The large-scale platform for vertical impact dynamic test of a bumper according to claim 5, characterized in that: The card block driving structure comprises a telescopic rod (144), a linkage plate (145) and a limiting plug rod (146), wherein the telescopic rod (144) is fixed on the connecting plate (15), one end of the linkage plate (145) is hinged to the telescopic rod (144), the other end is hinged to the rotating shaft (142), the linkage plate (145) is connected with the card block (143) and is used for driving the card block (143) to rotate around the rotating shaft (142) under the driving of the telescopic rod (143), and the limiting plug rod (146) is installed on the card block (143) and can be inserted into the corresponding hole provided on the connecting plate (15) when the pawl is inserted into the vertical rack (13).

7. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, wherein: A bumper mounting seat (16) is slidably arranged on the lower mounting platform (2) and used for fixing and mounting a bumper (11).

8. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: The lower mounting platform (2) is connected with a hook rib (17).

9. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: An operation panel (18) is further included, and the operation panel (18) is provided with control switches connected with the electromagnet (6) and the motor (7).

10. The large-scale platform for vertical impact dynamic test of a bumper according to claim 1, characterized in that: A computer (19) is further included, and the computer (19) is connected with the force sensor (8) and the bumper displacement detection unit (9) and is used for receiving detection data sent by the force sensor (8) and the bumper displacement detection unit (9).

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