End limiting structure of bunching test pay-off device

Abstract

The utility model relates to an end limiting structure of a bunching test pay-off device, and belongs to the technical field of bunching combustion test equipment. According to the utility model, the end limiting block and the fixing clamp are arranged, the push plate mechanism of the fixing clamp clamps the cable on the anti-skid groove surface of the end limiting block, the distance measuring module measures the distance between the cables, the pressing plate mechanism fixes the tail end of the cable in the cable positioning process, and the pressing plate mechanism and the push plate mechanism cooperate with each other, so that the distance between the cables is measured. After the cables are laid, pressing plates are fixed in riveting grooves of the end limiting blocks through bolts, the laid cables are fixed, and finally the end limiting blocks are installed at the two ends of the steel ladder, so that the paying-off operation of the bunched combustion test is completed, the laying efficiency and the laying precision are high, and the laying device is suitable for laying cables with different diameters; the method has the advantages of high adaptability, safety and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of bundled combustion test equipment, in particular to an end limiting structure of a bundled test pay-off device. Background Art

[0002] The bundled test refers to a bundled combustion test to determine the flame retardancy of bundled wires and cables under specified simulated fire conditions. This test is a more stringent large-scale test proposed to deal with the actual situation that a single wire or cable may pass the combustion test but may lose its flame retardancy under bundled laying conditions. The principle is to determine the ignition point, flame delay time and smoldering time of the wires and cables by controlling the flame temperature and flame length within a certain period of time, and judge the flame retardancy of the product based on whether the sample is burned out within the specified time.

[0003] In actual operation, the experiment needs to be completed with the help of a bundled cable combustion test machine. During the experiment, the wires and cables need to be retracted, released and fixed. At present, the existing technology mainly relies on manual operation and simple mechanical assistance when fixing cables. Manual operation to fix cables is inefficient and prone to errors. In the experiment, the arrangement, spacing and fixing method of the cables need to be precisely controlled, and manual operation is often difficult to achieve such accuracy. In addition, as the number of cables increases, the difficulty and error rate of manual operation will also increase accordingly, thereby affecting the accuracy of the experimental results; secondly, although simple mechanical assistance can improve efficiency to a certain extent, it still has limitations. These mechanical auxiliary equipment often have a single function and are difficult to adapt to the fixing needs of cables of different specifications and quantities.

[0004] Therefore, it is necessary to propose the design of an end limit structure for a bundled test release device, which is used to fix wires and cables during bundled combustion experiments, improve experimental efficiency, enhance accuracy, and be highly adaptable and safe and reliable. Utility Model Content

[0005] The utility model aims to provide an end limit structure of a bundled test pay-out device, which replaces the manual fixation and simple mechanical assistance used in the prior art, improves the experimental efficiency, enhances the precision, and is safe and reliable.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] An end limit structure of a bundled test release device comprises: an end limit block and a fixing clamp, wherein the end limit block is used to be installed at both ends of a steel ladder, and the fixing clamp clamps the cable on the end limit block; the fixing clamp is provided with a cavity, a push plate mechanism is provided on the top of the cavity, a power source is provided on one side of the cavity, a pressure plate mechanism and a ranging module are assembled on the back side of the fixing clamp, the top of the end limit block is an anti-slip groove surface, a sleeve is provided on one side of the end limit block, and a rivet groove and a ranging mark point are provided on the other side of the end limit block.

[0008] Furthermore, the push plate mechanism is composed of an air pump, a push plate, and an air pipe. The air pump is fixed on the top of the cavity, the push plate is on the lower side of the air pump, the power source is an air pressure source drive module, and the air pipe connects the air pump and the air pressure source drive module; there is at least one push plate mechanism, and at least two air pumps are connected to the top of one push plate.

[0009] Furthermore, the push plate mechanism is composed of a screw drive motor, a push plate, and a circuit. The screw drive motor includes a motor, a screw and a nut sleeve. The motor is fixed at the top of the cavity, the motor drive shaft is connected to the screw, the nut sleeve is assembled on the screw, the bottom of the nut sleeve is connected to the push plate, the power source is a battery drive module, the motor is connected to the battery drive module through a circuit, there is at least one push plate mechanism, and at least two nut sleeves and matching screws are connected to the top of one push plate.

[0010] Furthermore, the positions of the screw rod and the nut sleeve can be interchanged, the motor transmission shaft is connected to the nut sleeve, the screw rod is assembled inside the nut sleeve, and the bottom of the screw rod is connected to the push plate.

[0011] Preferably, there are four push plate mechanisms, and the lengths of the push plates of the four push plate mechanisms are respectively 1 / 4, 2 / 4, 3 / 4 and 4 / 4 of the length of the anti-slip groove surface at the top of the end limit block.

[0012] Furthermore, sliders are provided on both sides of the cavity of the fixing fixture, sliding grooves are provided on both sides of the end limit block, a baffle and a ranging track are provided at the end of the cavity, and the ranging track is used to install the ranging module.

[0013] Furthermore, a supporting shaft is provided on the back side of the fixing fixture, and the pressure plate mechanism includes a rotating armrest, a bracket and a pressure plate. The rotating armrest is assembled on the supporting shaft, the bracket is symmetrically installed at both ends of the rotating armrest, and the pressure plate is detachably installed on the bracket.

[0014] Furthermore, riveting interfaces are provided at both ends of the pressing plate, and the pressing plate can be riveted into the riveting groove of the end limit block by bolts.

[0015] The utility model adopts the above technical solution, which has the following beneficial effects:

[0016] The utility model sets an end limit block and a fixing clamp, and clamps the cable on the anti-skid groove surface of the end limit block through the push plate mechanism of the fixing clamp, and measures the distance between the cables through the distance measuring module. In the process of cable positioning, the cable end is fixed by the pressure plate mechanism, and the pressure plate mechanism and the push plate mechanism cooperate to complete the laying of the bundled cables. After the cable laying is completed, the pressure plate is fixed in the riveting groove of the end limit block by bolts to fix the laid cable, and finally the end limit blocks are installed at both ends of the steel ladder to complete the laying operation of the bundled combustion test. The technical scheme of the utility model can improve the experimental efficiency, measure the distance between the cables through the distance measuring module to ensure its accuracy, and at the same time, the technical scheme of the utility model is suitable for the laying of cables with different diameters, and has strong adaptability, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a rear view of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the top of the fixing fixture of the utility model;

[0021] Figure 4 This is a schematic diagram of the back side of the cable laying of the utility model device;

[0022] Figure 5 This is a rear view of the cable laying of the utility model device;

[0023] Figure 6 This is a schematic diagram of the laying state of the cable of the utility model;

[0024] Figure 7 This is a schematic diagram of the pressing plate mechanism of the utility model;

[0025] Figure 8 This is a schematic diagram of the preferred structure of the push plate mechanism of the utility model;

[0026] Fig. 9 It is a schematic diagram of the implementation effect of the utility model;

[0027] Fig.10 This is a positive fracture view of the implementation effect of the utility model.

[0028] In the figure: 1-fixing fixture; 11-cavity; 12-push plate mechanism; 121-air pump; 121A-screw drive motor; 121A1-motor; 121A2-screw; 121A3-nut sleeve; 122-air pipe; 122A-circuit; 123-push plate; 13-power source; 14-pressing plate mechanism; 141-rotating handrail; 142-bracket; 143-pressing plate; 144-screw hole; 15-baffle; 16-distance measuring track; 17-slider; 18-distance measuring module; 19-support shaft; 2-end limit block; 21-sleeve; 22-anti-slip groove surface; 23-slide groove; 24-distance measuring mark point; 25-bolt; 3-cable; 4-steel ladder. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention. Embodiment 1:

[0030] See also Figure 1 , Figure 2 , Figure 6 and Fig. 9 , an end limit structure of a bundled test release device, comprising: a fixing fixture 1 and an end limit block 2, the end limit block 2 is used to be installed at both ends of a steel ladder 4, and the fixing fixture 1 clamps the cable 3 on the end limit block 2; the fixing fixture 1 is provided with a cavity 11, a push plate mechanism 12 is provided on the top of the cavity 11, a power source 13 is provided on one side of the cavity 11, a pressing plate mechanism 14 and a ranging module 18 are assembled on the back side of the fixing fixture 1, the top of the end limit block 2 is an anti-slip groove surface 22, a sleeve 21 is provided on one side of the end limit block 2, and a rivet groove and a ranging mark point 24 are provided on the other side of the end limit block 2.

[0031] See also Figure 6 The push plate mechanism 12 is composed of an air pump 121, an air pipe 122 and a push plate 123. The air pump 121 is fixed on the top of the cavity 11, and the push plate 123 is on the lower side of the air pump 121. The power source 13 is an air pressure source drive module, and the air pipe 122 connects the air pump 121 and the air pressure source drive module; there is at least one push plate mechanism 12, and at least two air pumps 121 are connected to the top of a push plate 123; the push plate mechanism 12 adopts a pneumatic method, which can achieve a rapid response of the push plate mechanism 12 and improve the efficiency of cable laying of the utility model. Since a single air pump 121 is connected to the push plate 123, it cannot constrain the air pump 121 to rotate during operation, so it is required to be connected to one push plate 123 by at least two air pumps 121.

[0032] See also Figure 2 and Figure 6Slide blocks 17 are provided on both sides of the cavity 11 of the fixing fixture 1, and slide grooves 23 are provided on both sides of the end limit block 2. The slide blocks 17 and the slide grooves 23 are meshed with each other to prevent the end limit block 2 from sliding freely in the cavity 11; a baffle 15 and a ranging track 16 are provided at the end of the cavity 11 of the fixing fixture 1, the baffle 15 is used to limit the sliding stroke of the end limit block 2, and the ranging track 16 is used to install the ranging module 18.

[0033] See also Figure 3 , Figure 7 and Fig. 9 A supporting shaft 19 is provided on the back side of the fixing fixture 1, and the pressing plate mechanism 14 includes a rotating handrail 141, a bracket 142 and a pressing plate 143. The rotating handrail 141 is assembled on the supporting shaft 19, and the bracket 142 is symmetrically installed at both ends of the rotating handrail 141. The pressing plate 143 is detachably installed on the bracket 142; the pressing plate mechanism 14 is used to cooperate with the pushing plate mechanism 12 to complete the laying of bundled cables. After the laying of the cables 3 is completed, the pressing plate 143 is fixed in the riveting groove of the end limit block 2 by bolts 25 to fix the laid cables 3, and finally the end limit blocks 2 are installed at both ends of the steel ladder 4. Embodiment 2:

[0034] Please refer to 1. Figure 6 and Figure 8 On the basis of the first embodiment, the push plate mechanism 12 is composed of a screw drive motor 121A, a circuit 122A and a push plate 123. The screw drive motor 121A includes a motor 121A1, a screw 121A2 and a nut sleeve 121A3. The motor 121A1 is fixed at the top of the cavity 11. The transmission shaft of the motor 121A1 is connected to the screw 121A2. The nut sleeve 121A3 is assembled on the screw 121A2. The bottom of the nut sleeve 121A3 is connected to the push plate 123. The power source 13 is a battery drive module. The motor 121A1 is connected to the battery drive module through the circuit 122A. There is at least one push plate mechanism 12, and at least two nut sleeves 121A3 and matching screws 121A2 are connected to the top of one push plate 123.

[0035] It should be noted that the positions of the screw rod 121A2 and the nut sleeve 121A3 can be interchanged, the transmission shaft of the motor 121A1 is connected to the nut sleeve 121A3, the screw rod 121A2 is assembled inside the nut sleeve 121A3, and the bottom of the screw rod 121A2 is connected to the push plate 123.

[0036] See also Figure 6In the above two embodiments of the utility model, preferably, there are four push plate mechanisms 12, and the four push plate mechanisms 12 are arranged in sequence on the top of the cavity 11 of the fixing fixture 1, and the long axis direction of the push plate 123 is perpendicular to the direction of the cable 3. The lengths of the four push plates 123 are respectively 1 / 4, 2 / 4, 3 / 4 and 4 / 4 of the length of the anti-slip groove surface 22 at the top of the end limit block 2. Four push plate mechanisms 12 are set, and when laying the cable 3, laying starts from the position of the ranging mark point 24. When the laid cable 3 is located at 1 / 4, 2 / 4, 3 / 4 and 4 / 4 of the length of the anti-slip groove surface 22, the corresponding push plate mechanisms 12 are respectively activated, which can ensure that when laying cables 3 in different length intervals, it will not affect the position fixation of cables 3 in other intervals, and can improve the accuracy of the spacing between cables 3 to meet higher standards of bundled combustion experiments.

[0037] The use steps of the utility model are as follows:

[0038] S1 assembles the end limit block 2 in the fixing fixture 1, the slide groove 23 of the end limit block 2 engages in the slider 17 of the fixing fixture 1, and the sliding distance of the end limit block 2 is constrained by the baffle 15; the push plate mechanism 12, the pressure plate mechanism 14 and the distance measuring module 18 of the fixing fixture 1 all return to the initial position.

[0039] S2 determines the number of cables to be laid, calculates the distribution spacing of each cable, passes the end of the first cable 3 through the cavity 11 of the fixing fixture 1, and the length of the end passing through can reach the clamping range of the pressure plate mechanism 14. The first cable 3 is fixed on the distance measuring mark point 24, and the laying position of the next cable 3 is measured by the distance measuring module 18.

[0040] S3 presses down the pressing plate mechanism 14, and the pressing plate 143 of the pressing plate mechanism 14 presses the first cable 3, and the second cable 3 passes through the cavity 11 in the same way and is placed at the designated laying position measured by the ranging module 18, and the pushing plate mechanism 12 is started, and the pushing plate mechanism 12 is driven by the power source 13 to push the pushing plate 123 downward, and finally the cable 3 is pressed against the anti-slip groove surface 22 of the end limit block 2, and the pressing plate mechanism 14 is relaxed, so that the second cable 3 falls into the pressing range of the pressing plate mechanism 14, and the pressing plate mechanism 14 is controlled again to press the first and second cables, and the laying position of the next cable 3 is measured by the ranging module 18, and the subsequent cables 3 are laid in the same way.

[0041] S4 If multiple push plate mechanisms 12 are used, when the number of cables 3 laid exceeds the pressing range of the push plate 123 of the first push plate mechanism 12, the push plate 123 of the first push plate mechanism 12 is kept pressing the cables within the range, and other push plate mechanisms 12 and the pressure plate mechanism 14 cooperate to complete the laying of subsequent cables 3.

[0042] S5 After all cables are laid, remove the pressure plate 143 of the pressure plate mechanism 14, fix the pressure plate 143 in the riveting groove of the end limit block 2 by means of bolts 25, fix all laid cables 3, take out the first end limit block 2, and perform the cable 3 laying operation for the other end limit block 2; finally, install the two end limit blocks 2 at both ends of the steel ladder 4 respectively, and insert the sleeve 21 of the end limit block 2 into the module of the steel ladder 4 to complete the end limit operation of the bundled combustion test cable.

[0043] In the description of the present invention, 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, or it can be an indirect connection through an intermediate medium, it can be the internal communication 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.

[0044] In the description of the present invention, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0045] The terms "first", "second", "third" (if any) in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described can be implemented in an order other than those illustrated or described here.

[0046] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or service tool that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or service tool.

[0047] Finally, it should be noted that the contents of the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that for ordinary technicians in the field, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the scope of protection of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An end limit structure of a bundled test pay-off device, characterized in that: The invention comprises a fixing fixture (1) and an end stop block (2), wherein the end stop block (2) is used to be installed at both ends of a steel ladder (4), and the fixing fixture (1) clamps a cable (3) on the end stop block (2); the fixing fixture (1) is provided with a cavity (11), a push plate mechanism (12) is provided at the top of the cavity (11), a power source (13) is provided at one side of the cavity (11), a pressure plate mechanism (14) and a distance measurement module (18) are mounted on the back side of the fixing fixture (1), the top of the end stop block (2) is an anti-slip groove surface (22), a sleeve (21) is provided at one side of the end stop block (2), and a riveting groove and a distance measurement mark point (24) are provided at the other side of the end stop block (2).

2. The end limit structure of the bundled test pay-off device according to claim 1 is characterized in that: The push plate mechanism (12) is composed of an air pump (121), an air pipe (122) and a push plate (123); the air pump (121) is fixed on the top of the cavity (11); the push plate (123) is located below the air pump (121); the power source (13) is an air pressure source drive module; the air pipe (122) connects the air pump (121) and the air pressure source drive module; there is at least one push plate mechanism (12), and at least two air pumps (121) are connected to the top of one push plate (123).

3. The end limit structure of the bundled test pay-off device according to claim 1 is characterized in that: The push plate mechanism (12) is composed of a screw drive motor (121A), a circuit (122A) and a push plate (123); the screw drive motor (121A) comprises a motor (121A1), a screw (121A2) and a nut sleeve (121A3); the motor (121A1) is fixed to the top of the cavity (11); the transmission shaft of the motor (121A1) is connected to the screw (121A2); the nut sleeve (121A3) is assembled on the screw (121A2); the bottom of the nut sleeve (121A3) is connected to the push plate (123); the power source (13) is a battery drive module; the motor (121A1) is connected to the battery drive module via the circuit (122A); there is at least one push plate mechanism (12); and the top of one push plate (123) is connected to at least two nut sleeves (121A3) and matching screws (121A2).

4. The end limit structure of the bundled test pay-off device according to claim 3 is characterized in that: The positions of the screw rod (121A2) and the nut sleeve (121A3) can be interchanged, the transmission shaft of the motor (121A1) is connected to the nut sleeve (121A3), the screw rod (121A2) is assembled inside the nut sleeve (121A3), and the bottom of the screw rod (121A2) is connected to the push plate (123).

5. The end limit structure of the bundled test pay-off device according to any one of claims 2 to 3, characterized in that: There are four push plate mechanisms (12), and the four push plate mechanisms (12) are arranged in sequence at the top of the cavity (11) of the fixing fixture (1). The long axis direction of the push plate (123) is perpendicular to the direction of the cable (3). The lengths of the four push plates (123) are respectively 1 / 4, 2 / 4, 3 / 4 and 4 / 4 of the length of the anti-skid groove surface (22) at the top of the end limit block (2). Four push plate mechanisms (12) are provided, and when laying the cable (3), laying starts from the position of the distance measuring mark point (24). When the laying cable (3) is located at 1 / 4, 2 / 4, 3 / 4 and 4 / 4 of the length of the anti-skid groove surface (22), the corresponding push plate mechanisms (12) are activated respectively.

6. The end limit structure of the bundled test pay-off device according to claim 1 is characterized in that: Slide blocks (17) are provided on both sides of the cavity (11) of the fixing fixture (1), and slide grooves (23) are provided on both sides of the end limit block (2), and the slide blocks (17) and the slide grooves (23) are meshed with each other to prevent the end limit block (2) from sliding freely in the cavity (11); a baffle plate (15) and a distance measuring track (16) are provided at the end of the cavity (11) of the fixing fixture (1), the baffle plate (15) is used to limit the sliding stroke of the end limit block (2), and the distance measuring track (16) is used to install a distance measuring module (18).

7. The end limit structure of the bundled test pay-off device according to claim 1 is characterized in that: A supporting shaft (19) is provided on the back side of the fixing fixture (1); the pressing plate mechanism (14) comprises a rotating armrest (141), a bracket (142) and a pressing plate (143); the rotating armrest (141) is mounted on the supporting shaft (19); the bracket (142) is symmetrically mounted at both ends of the rotating armrest (141); and the pressing plate (143) is detachably mounted on the bracket (142).

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