A constant force buffer device

Abstract

The embodiment of the present invention discloses a constant force buffer device, comprising: a base plate; a bracket located on the base plate; a vertically arranged rotating rod assembled on the bracket through a rotating shaft; an elastic member located on the base plate; and a resistance member connected to the rotating rod at one end; the resistance member is configured to drive the rotating rod to rotate around the rotating shaft; one end of the elastic member is connected and fixed to the rotating rod, and the other end is hinged and fixed to the base plate; the projection of the force direction of the elastic member on the base plate is vertically arranged to the projection of the axis direction of the rotating shaft on the base plate; the elastic member is configured to be stretched as the rotating rod rotates. This device can reduce the impact of the kinetic energy of the pulley on the hard structural member through the stretching of the elastic member and the resistance member, and can also prevent the elastic rope and the elastic member from being damaged excessively due to the force.

Description

Technical Field

[0001] The present invention relates to the technical field of slide rail tests. More specifically, it relates to a constant force buffer device. Background Art

[0002] In the flexible slide rail test, a trolley for loading test equipment is installed on two parallel flexible rails. Different types and numbers of engines are used to make the trolley reach a movement speed of about 20 - 160 m / s, and the working performance of the test equipment during movement is detected. During the test, according to the different speed requirements of the test trolley, a variety of different deceleration devices can be used to decelerate the moving trolley, so that the trolley stops safely, avoiding the trolley and on-vehicle equipment from hitting the track terminal facilities, damaging the equipment and other items on the vehicle, and even causing the situation of items flying, resulting in damage to personnel, buildings, items, etc. Summary of the Invention

[0003] To solve the above problems, the present invention provides a constant force buffer device to achieve safe deceleration of a high-speed moving trolley to a stop.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A constant force buffer device, comprising:

[0006] A bottom plate;

[0007] A bracket located on the bottom plate;

[0008] A vertically arranged rotating rod assembled on the bracket through a rotating shaft;

[0009] An elastic member located on the bottom plate; and

[0010] A resistance member with one end connected to the rotating rod;

[0011] The resistance member is configured to drive the rotating rod to rotate around the rotating shaft;

[0012] One end of the elastic member is fixedly connected to the rotating rod, and the other end is hinged and fixed to the bottom plate;

[0013] The projection of the acting force direction of the elastic member on the bottom plate is perpendicular to the projection of the axis direction of the rotating shaft on the bottom plate;

[0014] The elastic member is configured to be stretched as the rotating rod rotates.

[0015] In addition, preferably, the rotating rod includes a first end portion located on one side of the rotating shaft and connected to the elastic member, and a second end portion located on the other side of the rotating shaft and connected to the resistance member.

[0016] In addition, a preferred solution is that the device further includes a connecting member fixedly coupled to the second end of the rotating rod, and the resistance member is connected to the rotating rod through the connecting member;

[0017] The elastic member is fixedly hinged between the first end of the rotating rod.

[0018] In addition, a preferred solution is that the resistance member includes an elastic cord, a connecting cord fixedly coupled to one end of the elastic cord, and a connecting ring fixedly coupled to the other end of the elastic cord for connecting to the rotating rod.

[0019] In addition, a preferred solution is that the connecting ring is sleeved on the connecting member.

[0020] In addition, a preferred solution is that the connecting ring includes a connecting band configured to connect to an auxiliary deceleration device.

[0021] In addition, a preferred solution is that a limiting rod corresponding to and cooperating with the rotating rod is provided on the bracket, and the limiting rod is configured to limit the rotation angle of the rotating rod.

[0022] In addition, a preferred solution is that one end of the elastic member is fixedly coupled to the first end of the rotating rod through a first fixing ring, and the end of the elastic member away from the rotating rod is fixedly coupled to the bottom plate through a second fixing ring.

[0023] In addition, a preferred solution is that the rotating shaft is fixedly coupled to the bracket, and the rotating rod is inserted through the rotating shaft.

[0024] In addition, a preferred solution is that a collar is included at the end of the resistance member away from the rotating rod; a plurality of support lines are included on the collar; and the plurality of support lines are arranged circumferentially along the collar.

[0025] The beneficial effects of the present application are as follows:

[0026] In view of the technical problems existing in the prior art, the embodiments of the present application provide a constant force buffer device. This device can be used alone in flexible rail tests or in cooperation with auxiliary deceleration equipment. It can achieve the safe deceleration of a high-speed moving trolley to a stop, avoiding the trolley hitting the end of the rail, resulting in the components of the trolley flying off the rail and causing damage to personnel and buildings, ensuring the safety of the trolley and on-vehicle equipment, meeting the working requirements of the rail test, and providing a method for safe deceleration braking in the rail test. In addition, the stretching of the elastic member and the resistance member plays a buffering role, which can reduce the impact of the kinetic energy of the trolley on the rigid structural members. At the same time, the connecting ring fixed to one end of the elastic rope can be disengaged from the bracket under force, avoiding excessive damage to the elastic rope and the elastic member due to excessive force. In addition, the setting of the elastic rope can slow down the impact brought by the high-speed movement of the trolley, playing a protective role for the device itself and the auxiliary deceleration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following further elaborates on the specific embodiments of the present invention with reference to the accompanying drawings.

[0028] Figure 1 The layout schematic diagram of the constant force buffer device provided by the embodiments of the present invention is shown.

[0029] Figure 2 The structural schematic diagram of the constant force buffer device provided by the embodiments of the present invention is shown.

[0030] Figure 3 The structural schematic diagram of the resistance member provided by the embodiments of the present invention is shown.

[0031] Figure 4 The front view of the constant force buffer device provided by the embodiments of the present invention is shown.

[0032] Figures 5a - 5b The working process schematic diagram of the constant force buffer device provided by the embodiments of the present invention is shown.

[0033] Figure 6 The structural schematic diagram of the collar provided by the embodiments of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To more clearly illustrate the present invention, the following further describes the present invention with reference to the preferred embodiments and the accompanying drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present invention.

[0035] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0036] It should also be noted that, in the description of the present application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0037] In order to overcome the defects of the prior art, the embodiment of the present invention provides a constant force buffer device for decelerating the pulley in the flexible slide rail test. Figure 1 As shown, the device comprises:

[0038] Bottom plate 1;

[0039] A bracket 2 located on the bottom plate 1;

[0040] A vertically arranged rotating rod 4 mounted on the bracket 2 via a rotating shaft 3;

[0041] an elastic member 5 located on the bottom plate 1; and

[0042] A resistance member 6 having one end connected to the rotating rod 4;

[0043] The resistance member 6 is configured to drive the rotating rod 4 to rotate around the rotating shaft 3; in a specific embodiment, the resistance member 6 connects the rotating rod 4 and the pulley 100 located on the flexible slide rail 11, so that the rotating rod 4 rotates as the pulley 100 moves.

[0044] One end of the elastic member 5 is fixedly connected to the rotating rod 4, and the other end is hingedly fixed to the bottom plate 1;

[0045] The projection of the acting force direction of the elastic member 5 on the bottom plate 1 is perpendicular to the projection of the axis direction of the rotating shaft 3 on the bottom plate 1;

[0046] The elastic member 5 is configured to be stretched as the rotating rod 4 rotates.

[0047] In one embodiment, the rotating rod 4 includes a first end 41 located at one end of the rotating shaft 3 and connected to the elastic member 5, and a second end 42 located on the other side of the rotating shaft 3 and connected to the resistance member 6. The resistance member 6 connects the rotating rod 4 and the trolley 100, so that the rotating rod 4 can rotate as the trolley 100 moves, thereby stretching the elastic member 5 connected to the first end 41, achieving the purpose of decelerating the trolley 100.

[0048] In a specific example, the device further includes a connecting member 7 fixedly combined with the second end 42 of the rotating rod 4. The resistance member 6 is connected to the rotating rod 4 through the connecting member 7. In this embodiment, the connecting member 7 includes two arms forming an angle. The resistance member is sleeved on one of the arms, and the angle formed by the two arms faces away from the elastic member 5. During the movement of the trolley 100, the rotating rod 4 rotates. When it rotates to a certain angle, the resistance member 6 disengages from the arm of the connecting member 7, avoiding damage to the elastic member 5 and the resistance member 6 caused by excessive stretching.

[0049] In one embodiment, the elastic member 5 is hingedly fixed to the first end 41 of the rotating rod 4. The elastic member 5 can be stretched as the rotating rod 4 rotates. The elastic member 5 generates a pulling force during stretching, which hinders the rotation of the rotating rod 4, and the resistance member 6 is gradually stretched. This process can prevent the resistance member 6 from breaking due to excessive instantaneous force, and can also prevent other rigid structural members from deforming or being damaged due to force.

[0050] In one embodiment, the resistance member 6 includes an elastic rope 61, a connecting rope 62 fixedly combined with one end of the elastic rope 61, and a connecting ring 63 fixedly combined with the other end of the elastic rope 61 for connecting to the rotating rod 4. The connecting rope 62 is connected to the trolley 100. During the movement of the trolley 100, the elastic rope 61 will be stretched, and the elastic rope 61 generates a pulling force to hinder the forward movement of the trolley 100, thereby achieving the deceleration effect.

[0051] In one embodiment, the connecting ring 63 is sleeved on a support arm of the connecting member 7. When the rotating rod 4 rotates to a certain position along with the movement of the pulley 100, the connecting ring 63 will disengage from the connecting member 7, preventing damage to the elastic rope 61 caused by excessive stretching. In another embodiment, when the device is used in a low-speed test, the connecting ring 63 can also be fixed to the connecting member 7. Since the speed of the pulley 100 is low, the pulley 100 can be decelerated to a stop only by the tensile force generated by the elastic rope 61.

[0052] In one embodiment, a connecting belt 64 is included on the connecting ring 63. The connecting belt 64 is configured to connect an auxiliary deceleration device. In other embodiments, if the device is used in a low-speed test, the connecting belt may not be provided, that is, the device can be used independently without connecting the auxiliary deceleration device.

[0053] In one embodiment, a limiting rod 8 corresponding to and cooperating with the rotating rod 4 is provided on the support 2. The limiting rod 8 is fixedly coupled to the support 2 and is configured to limit the rotation angle of the rotating rod 4, preventing damage to the elastic member 5 caused by an excessive rotation angle of the rotating rod 4.

[0054] In one embodiment, one end of the elastic member 5 is fixedly coupled to the first end portion 41 of the rotating rod 4 through a first fixing ring 91, and the end of the elastic member 5 remote from the rotating rod 4 is fixedly coupled to the bottom plate 1 through a second fixing ring 92. When the rotating rod 4 rotates, the end of the elastic member 5 fixed to the bottom plate 1 remains stationary, and the end fixedly coupled to the first end portion 41 of the rotating rod 4 moves along with the rotation of the rotating rod 4, causing the elastic member 5 to be stretched. The tensile force generated by the stretching of the elastic member 5 resists the rotation of the rotating rod 4, and the elastic rope 61 is gradually stretched. This process can prevent the elastic rope 61 from breaking due to excessive instantaneous force, and can also prevent other rigid structural members from deforming or being damaged due to force.

[0055] In one embodiment, the rotating shaft 3 is fixedly coupled to the support 2, and the rotating rod 4 is passed through the rotating shaft 3. The axis of the rotating rod 4 is perpendicular to the axis of the rotating shaft 3, and the rotating rod 4 can rotate around the rotating shaft 3 along with the movement of the pulley 100.

[0056] In one embodiment, one end of the resistance member 6 away from the rotating rod 4 includes a collar 65, and the collar 65 is correspondingly arranged in cooperation with the pulley 100. When the pulley 100 moves on the flexible slide rail 11, it will touch the collar 65 and move together with the collar 65. A plurality of support lines 10 are included on the collar 65, and the collar 65 is fixed on the flexible slide rail 11 through the plurality of support lines 10. The plurality of support lines 10 are arranged along the circumferential direction of the collar 65. In one implementation manner, the support line 10 is a thin string, a tape, or other soft linear objects well-known in the art that are easy to be smoothly broken when the pulley passes through. In this embodiment, the collar 65 is fixed on the flexible slide rail 11 by adopting a plurality of support lines 10, so as to ensure that when the pulley 100 passes through the collar 65, the pulley 100 can smoothly break the support line 10, drive the collar 65, thereby decelerating the pulley 100 and ensuring that there is no friction between the collar 65 and the flexible slide rail 11.

[0057] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A constant force buffer device, It is characterized in that include: Base plate; a bracket located on the bottom plate; A vertically arranged rotating rod mounted on the bracket via a rotating shaft; an elastic member located on the bottom plate; as well as a resistance member having one end connected to the rotating rod; The resistance member is configured to drive the rotating rod to rotate around the rotating shaft; One end of the elastic member is connected and fixed to the rotating rod, and the other end is hinged and fixed to the bottom plate; The projection of the acting force direction of the elastic member on the bottom plate is vertically arranged to the projection of the axis direction of the rotating shaft on the bottom plate; The elastic member is configured to be stretched as the rotating rod rotates; The rotating rod comprises a first end portion located at one side of the rotating shaft and connected to the elastic member, and a second end portion located at the other side of the rotating shaft and connected to the resistance member; The device also includes a connecting member fixedly coupled to the second end of the rotating rod, and the resistance member is connected to the rotating rod through the connecting member; The elastic member is hingedly fixed to the first end of the rotating rod; The resistance member includes an elastic rope, a connecting rope fixed to one end of the elastic rope, and a connecting ring fixed to the other end of the elastic rope for connecting with the rotating rod; The connecting ring is sleeved on the connecting member, the connecting member includes two arms forming an angle, the connecting ring is sleeved on one of the arms, the angle between the two arms is oriented in a direction away from the elastic member, and the connecting ring can be separated from the arm where it is located as the rotating rod rotates, so as to prevent the resistance member and the elastic member from being stretched and broken; The bracket is provided with a limit rod corresponding to the rotating rod, and the limit rod is configured to limit the rotating angle of the rotating rod.

2. The device according to claim 1, It is characterized in that The connecting ring includes a connecting belt, and the connecting belt is configured to be connected to an auxiliary deceleration device.

3. The device according to claim 1, It is characterized in that One end of the elastic member is fixedly connected to the first end of the rotating rod through a first fixing ring, and one end of the elastic member away from the rotating rod is fixedly connected to the bottom plate through a second fixing ring.

4. The device according to claim 1, It is characterized in that The rotating shaft is fixedly connected to the bracket, and the rotating rod is passed through the rotating shaft.

5. The device according to claim 1, It is characterized in that The resistance member includes a collar on one end away from the rotating rod; the collar includes a plurality of support wires; and the plurality of support wires are arranged along the circumference of the collar.

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