Pulley impact test bench

Abstract

The utility model relates to the technical field of test equipment, and discloses a tackle impact test bench, the tackle impact test bench comprises a base station, an acceleration assembly and a release member, the base station is provided with a slideway extending along a first direction, and a tackle can slide along the slideway and has an initial position and an impact position; the acceleration assembly is arranged on the base table and comprises a push plate, an elastic piece and a fixed plate, the push plate and the fixed plate are arranged at an interval in the first direction, the push plate can move in the first direction, the elastic piece is connected between the push plate and the fixed plate, the tackle abuts against the push plate when located at the initial position, and the elastic piece is in a force storage state; the release part is arranged on the base table, the release part is configured to fix or release the push plate so that the elastic part can be in a force storage state or a release state, and when the release part releases the push plate, under the action of the elastic part, the push plate applies thrust towards the impact position to the tackle. The test result is closer to the actual situation, and the slideway stroke and the occupied space are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a pulley impact test bench. Background Art

[0002] The impact test bench simulates the impact damage of items when the transport device rolls over. The existing impact test benches allow the object to rely on its own gravity and the speed generated by free acceleration to hit the inclined impact bench. This method can meet the requirements of inclined impact tests with low speed requirements. However, the rollover caused by general automobile transportation of goods, or the rollover caused by airdrop descent, etc., will cause the object to have a higher speed. Ordinary inclined impact platforms cannot meet the speed impact requirements. If the requirements are to be met, the inclined stroke must be lengthened, or the inclined angle must be very large, which will increase the material consumption, volume, and floor space of the inclined impact test bench.

[0003] Therefore, a pulley impact test bench is urgently needed to solve the above problems. Utility Model Content

[0004] Based on the above, the purpose of the utility model is to provide a pulley impact test bench, the test results of which are closer to the actual situation and save the slide travel and occupied space.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pulley impact test bench, comprising:

[0007] A base, wherein the base has a slideway extending in a first direction, the pulley can slide along the slideway and has an initial position and an impact position, and the impact position is provided with an impact plate;

[0008] an acceleration assembly, arranged on the base, comprising a push plate, an elastic member and a fixed plate, the push plate and the fixed plate being arranged at intervals along the first direction, the push plate being movable along the first direction, the elastic member being connected between the push plate and the fixed plate, the pulley being against the push plate when located at the initial position, and the elastic member being in a force storage state;

[0009] A release member is arranged on the base, and the release member is configured to fix or release the push plate so that the elastic member is in a force storage state or a release state. When the release member releases the push plate, under the action of the elastic member, the push plate applies a thrust toward the impact position to the pulley.

[0010] As a preferred solution of a pulley impact test bench, it also includes:

[0011] A guide column has one end fixedly connected to the push plate and the other end movably penetrates the fixed plate along the first direction, and the elastic member is sleeved on the guide column.

[0012] As a preferred solution of a pulley impact test bench, it also includes:

[0013] The connecting plate is connected to one end of the guide column away from the push plate and is located on a side of the fixing plate away from the push plate. The releasing member is configured to fix or release the connecting plate.

[0014] As a preferred solution of a pulley impact test bench, the release member includes an electromagnetic force plate, the electromagnetic force plate and the fixing plate are located on both sides of the connecting plate, and the electromagnetic force plate can magnetically attract the connecting plate or release the connecting plate.

[0015] As a preferred solution of a pulley impact test bench, it also includes:

[0016] A guide rail is extended along the first direction and is arranged on the base, and the push plate is slidably connected to the guide rail.

[0017] As a preferred solution of a pulley impact test bench, it also includes:

[0018] A driving member and a pull rope, wherein the driving member is arranged on the base, one end of the pull rope is connected to the driving member, and the other end is connected to the pulley, and the driving member can drive the pull rope to be retracted and released to drive the pulley to slide from the impact position to the initial position, or release the pulley.

[0019] As a preferred solution of a pulley impact test bench, the driving member and the releasing member are configured to release the pulley and the push plate synchronously.

[0020] As a preferred solution of a pulley impact test bench, it also includes:

[0021] The first proximity switch is arranged on the base and corresponds to the initial position. The first proximity switch is communicatively connected with the driving member. The driving member can receive the detection signal of the first proximity switch and drive the pull rope to continue to reel in or stop reeling in.

[0022] As a preferred solution of a pulley impact test bench, it also includes:

[0023] The second proximity switch is arranged at a preset distance from the first proximity switch along the extending direction of the slideway and is closer to the impact position than the first proximity switch.

[0024] As a preferred solution of a sled impact test bench, the slideway is arranged obliquely relative to a horizontal plane, and the slideway is inclined downward from the initial position toward the impact position.

[0025] The beneficial effects of the utility model are:

[0026] The utility model provides a pulley impact test bench, which comprises a base, an acceleration component and a release component. A push plate is fixed by the release component so that the distance between the push plate and the fixed plate is maintained at a position where the elastic component is in a force storage state. The pulley is placed on a slideway and abuts against the push plate. When the release component releases the push plate, the push plate releases the elastic component, and the elastic component in the force storage state recovers to push the pulley to slide toward the impact plate on the slideway. That is, an initial velocity is applied to the pulley by the acceleration component to simulate the impact of an object with a large initial velocity, so that the test structure is more accurate; and there is no need to lengthen the slideway stroke or raise the slideway angle, thereby saving floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the partial structure of the pulley impact test bench provided by the embodiment of the utility model Figure 1 (abutment not shown);

[0029] Figure 2 This is a schematic diagram of the partial structure of the pulley impact test bench provided by the embodiment of the utility model Figure 2 (Abutment and elastic members not shown).

[0030] In the figure:

[0031] 1. Acceleration assembly; 11. Push plate; 12. Elastic member; 13. Fixed plate;

[0032] 2. Release parts;

[0033] 3. Guide column;

[0034] 4. Connecting plate;

[0035] 5. Guide rail. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] The impact test bench simulates the impact damage caused by the rollover of the transport device. The existing impact test benches allow the object to rely on its own gravity and the speed generated by free acceleration to hit the inclined impact bench. This method can meet the requirements of the inclined impact test with low speed requirements. However, the rollover caused by general automobile transportation of goods, or the rollover caused by the airdrop descent process, etc., will cause the object to have a higher speed. The ordinary inclined impact platform cannot meet the speed impact requirements. If the requirements are to be met, the inclined stroke must be lengthened, or the inclined angle must be very large, which will increase the material consumption, volume, and floor space of the inclined impact test bench.

[0041] Based on the above problems, Figure 1 and Figure 2As shown, this embodiment provides a trolley impact test bench, which includes a base, an acceleration assembly 1 and a release member 2. The base has a slide extending in a first direction, and the trolley can slide along the slide; the acceleration assembly 1 is arranged on the base, and the acceleration assembly 1 includes a push plate 11, an elastic member 12 and a fixed plate 13. The push plate 11 and the fixed plate 13 are arranged at intervals along the first direction, and the push plate 11 can move along the first direction. The elastic member 12 is connected between the push plate 11 and the fixed plate 13. When the trolley is in the initial position, it abuts against the push plate 11, and the elastic member 12 is in a force storage state; the release member 2 is arranged on the base, and the release member 2 is configured to fix or release the push plate 11 so that the elastic member 12 is in a force storage state or a release state. When the release member 2 releases the push plate 11, under the action of the elastic member 12, the push plate 11 applies a thrust toward the impact position to the trolley. In this embodiment, the slide is arranged obliquely relative to the horizontal plane, and the slide is inclined downward from the initial position toward the impact position to simulate the situation where the object moves along the inclined surface when the transport rolls over. The push plate 11 is fixed by the release member 2 so that the distance between the push plate 11 and the fixed plate 13 is maintained at the position where the elastic member 12 is in the force storage state, and the pulley is moved to the initial position against the push plate 11 through the motor pull rope. When the release member 2 releases the push plate 11, the push plate 11 releases the elastic member 12, and the elastic member 12 in the force storage state recovers, pushing the pulley to slide toward the impact position on the slide, that is, an initial velocity is applied to the pulley by the acceleration component 1 to simulate the impact of an object with a large initial velocity, so that the test structure is more accurate; and there is no need to lengthen the slide stroke or raise the slide angle, saving floor space.

[0042] Specifically, a collision plate is provided at one end of the base. Under the thrust of the push plate 11, the pulley slides to the collision position and hits the collision plate, simulating the collision during actual transportation work, and can stop the pulley to prevent the pulley from leaving the slideway and causing unpredictable situations.

[0043] In one embodiment, the elastic member 12 is a compression spring. When the push plate 11 approaches the fixed plate 13, the elastic member 12 is compressed, so that the elastic member 12 accumulates force, and the fixed plate 13 moves away from the impact plate compared to the push plate 11. When the release member 2 releases the push plate 11, the push plate 11 moves away from the fixed plate 13 under the action of the elastic member 12 and applies thrust to the pulley.

[0044] In another embodiment, the elastic member 12 is a tension spring. When the push plate 11 moves away from the fixed plate 13, the elastic member 12 is stretched so that the elastic member 12 accumulates force, and the fixed plate 13 is closer to the impact plate than the push plate 11, and the fixed plate 13 does not block the slide. When the release member 2 releases the push plate 11, the push plate 11 is closer to the fixed plate 13 under the action of the elastic member 12 and applies thrust to the pulley.

[0045] Preferably, the pulley impact test bench further comprises a guide column 3, one end of which is fixedly connected to the push plate 11, and the other end of which is movably arranged in the first direction through the fixed plate 13, and the elastic member 12 is sleeved on the guide column 3. The guide column 3 is arranged to guide and support the elastic member 12 during its extension and retraction, and can effectively prevent the elastic member 12 from bending and deflecting during the extension and retraction process, thereby improving the reliability of the pulley impact test bench.

[0046] Specifically, a guide hole is provided on the fixed plate 13, and the guide column 3 is movably passed through the guide hole. The guide hole serves as a guide and limiter for the guide column 3, so that the guide column 3 moves along the first direction with better stability. Preferably, multiple elastic members 12 and guide columns 3 are provided, and multiple guide holes are correspondingly provided on the fixed plate 13. Multiple guide columns 3 are arranged at intervals, and an elastic member 12 is sleeved on each guide column 3 and passes through a guide hole. For example, three or four guide columns 3 are provided, and the specific setting is based on actual needs.

[0047] More specifically, the pulley impact test bench also includes a connecting plate 4, which is connected to one end of the guide column 3 away from the push plate 11 and is located on the side of the fixed plate 13 away from the push plate 11, and the release member 2 is configured to fix or release the connecting plate 4. The connecting plate 4 can prevent the guide column 3 from being separated from the guide hole, thereby ensuring the normal operation of the acceleration assembly 1. The connecting plate 4 is fixed by the release member 2, so that the connecting plate 4 drives the guide column 3 to move along the guide hole, thereby controlling the distance between the push plate 11 and the fixed plate 13, that is, controlling the elastic member 12 to be in a force storage state; the connecting plate 4 is released by the release member 2, and the elastic member 12 drives the guide column 3 to move along the guide hole when it recovers. By fixing or releasing the connecting plate 4, the installation and steps of the release member 2 are facilitated, and it is avoided that the release member 2 is directly connected to the push plate 11 to affect the pushing effect of the push plate 11 on the pulley.

[0048] In this embodiment, the release member 2 includes an electromagnetic force plate, and the electromagnetic force plate and the fixing plate 13 are located on both sides of the connecting plate 4. The electromagnetic force plate can magnetically attract the connecting plate 4 or release the connecting plate 4. The magnetic force of the electromagnetic force plate is controlled to be invalid or effective by the on-off of the circuit, thereby realizing the fixed limit or release of the connecting plate 4, which is convenient and quick, and has a quick response.

[0049] In order to reduce the loss of the force applied by the push plate 11, a guide rail 5 is provided on the base along the first direction, and the push plate 11 is slidably connected to the guide rail 5, specifically, the push plate 11 is slidably connected to the slide rail through a slider. The slide rail can reduce the resistance of the push plate 11 when the elastic member 12 is restored, reduce the loss of force, and also guide the push plate 11 to prevent the push plate 11 from being offset and shaking during the movement, which affects the test results.

[0050] Furthermore, the pulley impact test bench also includes a driving member and a pull rope. The driving member is arranged on the base, one end of the pull rope is connected to the driving member, and the other end is connected to the pulley. The driving member can drive the pull rope to be retracted and released to drive the pulley to slide from the impact position to the initial position, or release the pulley. The pull rope can be used to pull the pulley to the initial position to prevent the pulley from sliding naturally under the action of gravity, and there is no need for manpower to limit the pulley to the initial position. When conducting a test, the driving member releases the pull rope, the pull rope releases the pulley, and the pulley is pushed to the impact position by the push plate 11; after the test is completed, the driving member drives the pull rope to be reeled up, so that the pulley slides back to the initial position from the impact position to wait for the next test, and there is no need to pull the pulley manually, saving manpower and time.

[0051] Preferably, the driving member and the releasing member 2 are configured to synchronously release the pulley and the push plate 11, that is, the driving member and the releasing member 2 synchronously release the pulley and the connecting plate 4, so that when the push plate 11 applies force to the pulley, the pulley can be pushed smoothly, avoiding the thrust from burdening the pulley and the driving member and affecting their lifespan, and avoiding the pulley from naturally sliding down under the action of gravity when it does not receive the thrust.

[0052] Specifically, the pulley impact test bench also includes a first proximity switch, which is arranged on the base and corresponds to the initial position. The first proximity switch is connected to the drive member in communication, and the drive member can receive the detection signal of the first proximity switch and drive the pull rope to continue to reel in or stop reeling in. When the first proximity switch detects the pulley, it means that the pulley has been pulled to the initial position. At this time, the drive member receives the detection signal of the first proximity switch and stops working, that is, stops reeling in the pull rope to prevent the pull rope from continuing to pull the pulley to cause damage to other structures, and the pull rope keeps the pulley in the initial position. Among them, the first proximity switch can be selected but not limited to a magnetic induction sensor. Since the magnetic induction sensor is a relatively mature existing technology, it will not be described one by one here.

[0053] More specifically, the pulley impact test bench also includes a second proximity switch, which is arranged at a preset distance from the first proximity switch along the extension direction of the slideway and is close to the impact position relative to the first proximity switch. The second proximity switch may be, but is not limited to, a magnetic induction sensor. When the test starts, the ratio of the time difference between the pulley detected by the first proximity switch and the pulley detected by the second proximity switch to the distance between the first proximity switch and the second proximity switch is the pulley speed, that is, the sliding speed of the pulley can be known during the test, so as to facilitate the analysis and comparison of subsequent test results. In this embodiment, multiple proximity switches can be arranged at intervals along the slideway direction, and the speed of the pulley at different positions can be obtained by the spacing between the multiple proximity switches and the time difference of the detected pulley.

[0054] Furthermore, the pulley impact test bench also includes an anti-rebound component, which is arranged on a base. The anti-rebound component includes a base, a spring and a clamping plate. The base is installed on the base, one end of the clamping plate close to the initial position is hinged to the base, and the other end close to the impact position is elastically connected to the base through a spring. The spring causes one end of the clamping plate to lift relative to the base in the initial state, that is, the end of the clamping plate away from the initial position is lifted, and the pulley passes through the clamping plate when sliding to the impact position, and the lifted end of the clamping plate is pressed down, and the spring is compressed. When the pulley hits the impact plate, it moves away from the clamping plate, and under the restoring action of the spring, one end of the clamping plate is lifted up and abuts against the pulley, that is, it limits the pulley and prevents the pulley from rebounding after hitting the impact plate.

[0055] Specifically, the anti-rebound component also includes a driving source, which can drive the raised end of the card plate to descend, so that the pulley can be smoothly recovered, wherein the driving source can be selected but not limited to a cylinder, and the driving end of the cylinder can be pushed back by an external force to avoid affecting the smooth downward pressure of the card plate when the pulley passes. The anti-rebound component can prevent the pulley from rebounding after hitting the impact plate and affecting the accuracy of the test results of the object to be tested on the pulley, that is, the anti-rebound component can effectively ensure the accuracy of the test results.

[0056] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pulley impact test bench, It is characterized in that include: A base, wherein the base has a slideway extending in a first direction, the pulley can slide along the slideway and has an initial position and an impact position, and the impact position is provided with an impact plate; an acceleration assembly, arranged on the base, comprising a push plate, an elastic member and a fixed plate, the push plate and the fixed plate being arranged at intervals along the first direction, the push plate being movable along the first direction, the elastic member being connected between the push plate and the fixed plate, the pulley being against the push plate when located at the initial position, and the elastic member being in a force storage state; A release member is arranged on the base, and the release member is configured to fix or release the push plate so that the elastic member is in a force storage state or a release state. When the release member releases the push plate, under the action of the elastic member, the push plate applies a thrust toward the impact position to the pulley.

2. The pulley impact test bench according to claim 1, It is characterized in that Also includes: A guide column has one end fixedly connected to the push plate and the other end movably penetrates the fixed plate along the first direction, and the elastic member is sleeved on the guide column.

3. The pulley impact test bench according to claim 2, It is characterized in that Also includes: The connecting plate is connected to one end of the guide column away from the push plate and is located on a side of the fixing plate away from the push plate. The releasing member is configured to fix or release the connecting plate.

4. The pulley impact test bench according to claim 3, It is characterized in that The release member comprises an electromagnetic force plate. The electromagnetic force plate and the fixing plate are located on both sides of the connecting plate. The electromagnetic force plate can magnetically attract the connecting plate or release the connecting plate.

5. The pulley impact test bench according to any one of claims 1 to 4, It is characterized in that Also includes: A guide rail is extended along the first direction and is arranged on the base, and the push plate is slidably connected to the guide rail.

6. The pulley impact test bench according to any one of claims 1 to 4, It is characterized in that Also includes: A driving member and a pull rope, wherein the driving member is arranged on the base, one end of the pull rope is connected to the driving member, and the other end is connected to the pulley, and the driving member can drive the pull rope to be retracted and released to drive the pulley to slide from the impact position to the initial position, or release the pulley.

7. The pulley impact test bench according to claim 6, It is characterized in that The driving member and the releasing member are configured to release the trolley and the push plate synchronously.

8. The pulley impact test bench according to claim 6, It is characterized in that Also includes: The first proximity switch is arranged on the base and corresponds to the initial position. The first proximity switch is communicatively connected with the driving member. The driving member can receive the detection signal of the first proximity switch and drive the pull rope to continue to reel in or stop reeling in.

9. The pulley impact test bench according to claim 8, It is characterized in that Also includes: The second proximity switch is arranged at a preset distance from the first proximity switch along the extending direction of the slideway and is closer to the impact position than the first proximity switch.

10. The pulley impact test bench according to any one of claims 1 to 4, It is characterized in that The slideway is arranged obliquely relative to a horizontal plane, and the slideway is inclined downward from the initial position toward the impact position.

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