B1 grade fire-retardant early warning safety type cable stretching device

Abstract

The utility model belongs to cable processing field especially a kind of B1 grade flame-retardant early warning safety type cable stretching device, to the effect of part although being provided with shell and other components, but effect is relatively single, if it is opened directly after stretching without resetting, it may occur that the cable without resetting is suddenly rebounded due to residual elastic potential and hurt the phenomenon problem, present and propose the following scheme, it includes base, the top fixed mounting of base has portal frame;Front baffle and back baffle, the back baffle is fixedly installed in the back of portal frame, the front baffle is rotatably connected in the front of portal frame by hinge, protect by closing front baffle, to ensure the installation of staff, and during stretching and end but not completely reset, front baffle cannot be opened, to prevent the possibility of staff being hurt due to the elastic potential rebound of cable.

Description

Technical Field

[0001] This utility model relates to the field of cable processing technology, and in particular to a B1-grade flame-retardant early warning safety cable stretching device. Background Technology

[0002] In the cable production process, the stretching process is a key step to ensure the uniformity of cable materials and improve mechanical properties. The main function of the cable stretching device is to test the tensile strength: by applying tension, the tensile strength, breaking strength and elongation of the cable are tested to ensure that the cable meets the quality standards.

[0003] Most of the tensioning devices commonly available on the market are traditional open structures. When the cable breaks or the clamp loosens during the tensioning process, causing a splashing accident, it poses a safety hazard to the operator. Although some are equipped with protective shells and other components, their function is relatively simple. If the device is opened directly without being reset after tensioning, the cable may suddenly rebound due to residual elastic potential energy and injure people. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where cables that have not been reset may suddenly rebound due to residual elastic potential energy, potentially causing injury to people. Therefore, this invention proposes a B1-grade flame-retardant early warning safety cable tensioning device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A B1-grade flame-retardant early warning safety cable tensioning device includes a base, and a gantry frame is fixedly installed on the top of the base;

[0007] A front baffle and a rear baffle, wherein the rear baffle is fixedly installed on the rear side of the gantry frame, and the front baffle is rotatably connected to the front side of the gantry frame via a hinge;

[0008] Two fixing components are respectively installed at the bottom of the slide and the top of the base. The fixing components include a mounting plate, a first fixing plate, a clamping plate and a second fixing plate. The first fixing plate and the second fixing plate are both fixedly installed on the mounting plate. The clamping plate is slidably disposed at the bottom of the mounting plate and is located between the first fixing plate and the second fixing plate. A threaded shaft is rotatably disposed on one side of the clamping plate, and one end of the threaded shaft is threaded through the second fixing plate.

[0009] The limiting mechanism includes a T-shaped round rod fixed to the end of the threaded shaft and a limiting plate disposed on the inner side of the front baffle. The limiting plate has a T-shaped sliding cavity that cooperates with the T-shaped round rod.

[0010] In one possible design, the clamping surfaces of both the clamping plate and the first fixing plate are curved, forming a double-curved clamping structure.

[0011] In one possible design, the inner walls of both sides of the gantry are provided with sliding grooves. A limit rod is fixedly installed in one of the sliding grooves, and a threaded rod is rotatably installed in the other sliding groove. The two ends of the slide block are respectively slidably sleeved on the outer wall of the limit rod and threadedly sleeved on the outer wall of the threaded rod.

[0012] In one possible design, a servo motor is fixedly installed inside the base, and the output shaft of the servo motor is connected to the lower end of the threaded rod via a coupling.

[0013] In one possible design, both mounting plates are mounted on the bottom of the slide and the top of the base, respectively, via force sensors.

[0014] In one possible design, the front baffle has an observation window in the central area, the observation window being made of a transparent polycarbonate sheet.

[0015] In one possible design, the rear baffle and the front baffle together form a semi-enclosed protective space, and the rear baffle is welded and fixed to the rear side of the gantry.

[0016] In this application, during actual use, the end of the cable is first placed between the clamping plate and the first fixing plate. Then, by rotating the threaded shaft, the clamping plate is moved to fix the cable, thus completing the cable installation. After that, the front baffle is closed, and then the threaded rod is rotated by driving the servo motor, which moves the upper slide upward to stretch the cable. At this time, the stretching can be detected by the force sensor installed between the slide and the mounting plate. When the slide moves upward, the T-shaped rod will enter the interior of the T-shaped slide cavity and move inside it. At this time, the front baffle will be limited and cannot be rotated open. Only after the end and the device is reset, so that the T-shaped rod is disengaged from the T-shaped slide cavity, can the front baffle be opened. This avoids the accidental release of the cable fixation before the device is fully reset, and prevents the cable from suddenly rebounding due to residual elastic potential energy and injuring people.

[0017] In this utility model, the B1-grade flame-retardant early warning safety cable tensioning device can clamp and fix the cable through the fixing component, and the double arc surface clamping structure can increase the contact area. Combined with the threaded shaft fine adjustment function, it can have a certain adaptability.

[0018] In this utility model, the B1-grade flame-retardant early warning safety cable stretching device, through a limiting mechanism, can ensure that the front baffle can protect the area around it during the stretching test, and the front baffle can only be opened after the measurement is completed, thereby avoiding the possibility of accidental operation causing injury to the staff.

[0019] In this invention, when used for tensile testing, the front baffle is closed for protection, thereby ensuring the safety of the installer. The front baffle cannot be opened during the tensile testing process or after the test but before the cable is fully reset, thus preventing the possibility of injury to the worker due to the elastic rebound of the cable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of a B1-grade flame-retardant early warning safety cable tensioning device proposed in this utility model;

[0021] Figure 2 This is a bottom view of the structure of a B1-grade flame-retardant early warning safety cable tensioning device proposed in this utility model.

[0022] Figure 3 This utility model Figure 2 Enlarged view of the structure of part A in the middle.

[0023] In the diagram: 1. Base; 2. Gantry frame; 3. Rear baffle; 4. Front baffle; 5. Limiting plate; 6. Slide seat; 7. Fixing component; 8. T-shaped slide cavity; 9. Threaded rod; 10. Slide groove; 11. Mounting plate; 12. Fixing plate No. 1; 13. Clamping plate; 14. Fixing plate No. 2; 15. Threaded shaft; 16. T-shaped round rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Reference Figure 1-2 A stretching device includes: a base 1, a gantry frame 2, a front baffle 4, a rear baffle 3, and a stretching actuator.

[0027] The base 1 is a rectangular frame structure, and the top of it is fixed to the gantry frame 2 by bolts. The gantry frame 2 has an inverted U-shaped design, and the inner walls on both sides have symmetrical sliding grooves 10. The front baffle 4 is hinged to the front end of the gantry frame 2, and the rear baffle 3 is fixed to the rear end by welding, forming a semi-enclosed protective space.

[0028] For the movement of the slide block 6, a limiting rod and a threaded rod 9 are respectively installed inside the slide groove 10. The limiting rod is a smooth shaft structure, and the two ends of the threaded rod 9 are rotatably connected to the slide groove 10 through bearings. The two ends of the slide block 6 are respectively fitted onto the limiting rod and the threaded rod 9, and the end in contact with the threaded rod 9 has an internal threaded hole fit structure. A servo motor is installed inside the base 1, and its output shaft is connected to the lower end of the threaded rod 9 through a coupling to realize the vertical lifting movement of the slide block 6.

[0029] For the two fixing parts 7 of the cable clamp, the upper fixing part 7 is installed at the bottom of the slide 6 by bolts, and the lower fixing part 7 is fixed to the top of the base 1 by welding, forming an upper and lower corresponding layout.

[0030] Reference Figure 3 Each fastener 7 includes a mounting plate 11, a first fixing plate 12, a clamping plate 13, and a second fixing plate 14. The mounting plate 11 is a rectangular steel plate, with the first fixing plate 12 and the second fixing plate 14 welded to its two sides respectively. The clamping plate 13 is slidably mounted between the two fixing plates, and a threaded shaft 15 passes through the second fixing plate 14 and is connected to the clamping plate 13 by a bearing. The mounting plate 11 is installed using a force sensor.

[0031] Specifically, the end of the cable is first placed between the clamping plate 13 and the first fixing plate 12. Then, by rotating the threaded shaft 15, the clamping plate 13 is moved to fix the cable by clamping, thus completing the installation of the cable. After that, the front baffle 4 is closed, and then the threaded rod 9 is rotated by driving the servo motor, which moves the upper slide 6 upward to stretch the cable. At this time, the stretching can be detected by the force sensor installed between the slide 6 and the mounting plate 11.

[0032] The T-shaped round rod 16 is welded to the end of the threaded shaft 15 as a limiting mechanism for protection. The limiting plate 5 is welded to the inner side of the front baffle 4, and a T-shaped sliding cavity 8 is opened on its surface.

[0033] Specifically, when the slide block 6 moves upward to stretch, the T-shaped rod 16 will enter the interior of the T-shaped slide cavity 8 and move inside it. At this time, the front baffle 4 will be limited and cannot be rotated and opened. Only when the process is completed and the device is reset so that the T-shaped rod 16 is disengaged from the T-shaped slide cavity 8 can the front baffle 4 be opened. This avoids the accidental release of the cable fixation before the device is fully reset, and prevents the cable from suddenly rebounding due to residual elastic potential energy and injuring people.

[0034] This application can be used in the field of cable processing, or in other fields applicable to this application.

[0035] Example 2

[0036] refer to Figure 1 An improvement based on Embodiment 1: A B1-grade flame-retardant early warning safety cable stretching device, which is applied to the cable processing field, wherein the surface of the clamping plate 13 is machined with an arc-shaped groove, forming a symmetrical clamping structure with the arc surface of the first fixing plate 12.

[0037] A rectangular observation window is provided in the center of the front baffle 4. It is made of 5mm thick transparent polycarbonate sheet and is fixed to the baffle frame by silicone sealing strip, which combines strength and visibility.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of force sensors and servo motors are commonplace and are all conventional methods or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A B1-grade flame-retardant early warning safety cable tensioning device, characterized in that, include: A base (1), on the top of which a gantry frame (2) is fixedly installed; A front baffle (4) and a rear baffle (3), wherein the rear baffle (3) is fixedly installed on the rear side of the gantry (2), and the front baffle (4) is rotatably connected to the front side of the gantry (2) via a hinge; Two fasteners (7) are respectively installed on the bottom of the slide (6) and the top of the base (1). The fasteners (7) include a mounting plate (11), a first fixing plate (12), a clamping plate (13) and a second fixing plate (14). The first fixing plate (12) and the second fixing plate (14) are both fixedly installed on the mounting plate (11). The clamping plate (13) is slidably disposed on the bottom of the mounting plate (11) and is located between the first fixing plate (12) and the second fixing plate (14). A threaded shaft (15) is rotatably disposed on one side of the clamping plate (13), and one end of the threaded shaft (15) is threaded through the second fixing plate (14). The limiting mechanism includes a T-shaped round rod (16) fixed to the end of the threaded shaft (15) and a limiting plate (5) disposed inside the front baffle (4). The limiting plate (5) has a T-shaped sliding cavity (8) that cooperates with the T-shaped round rod (16).

2. The B1-grade flame-retardant early warning safety cable tensioning device according to claim 1, characterized in that, The clamping surfaces of the clamping plate (13) and the first fixing plate (12) are both arc surfaces, forming a double arc surface clamping structure.

3. The B1-grade flame-retardant early warning safety cable tensioning device according to claim 1, characterized in that, The inner walls of both sides of the gantry (2) are provided with sliding grooves (10). A limit rod is fixedly installed in one of the sliding grooves (10), and a threaded rod (9) is rotatably installed in the other sliding groove (10). The two ends of the slide block (6) are respectively slidably sleeved on the outer wall of the limit rod and threadedly sleeved on the outer wall of the threaded rod (9).

4. The B1-grade flame-retardant early warning safety cable tensioning device according to claim 3, characterized in that, A servo motor is fixedly installed inside the base (1), and the output shaft of the servo motor is connected to the lower end of the threaded rod (9) through a coupling.

5. The B1-grade flame-retardant early warning safety cable tensioning device according to claim 1, characterized in that, Both mounting plates (11) are mounted on the bottom of the slide (6) and the top of the base (1) respectively via force sensors.

6. The B1-grade flame-retardant early warning safety cable tensioning device according to claim 1, characterized in that, An observation window is provided in the central area of ​​the front baffle (4), and the observation window is made of transparent polycarbonate sheet.

7. The B1-grade flame-retardant early warning safety cable tensioning device according to any one of claims 1-6, characterized in that, The rear baffle (3) and the front baffle (4) together form a semi-enclosed protective space, and the rear baffle (3) is welded and fixed to the rear side of the gantry (2).

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