Cable sheath thermal aging test equipment

Abstract

The invention discloses cable sheath thermal aging test equipment, and relates to the field of aging test equipment. According to the cable sheath thermal aging test equipment, through the ingenious structural design, the replacement efficiency of the sheath is greatly improved, when the sheath is replaced by traditional thermal aging test equipment, a user needs to manually take down clamps one by one, then the clamps with the clamped sheath are hung again, operation is tedious, and consumed time is long; the power rod is rotatably mounted at the bottom of the storage rack, the positioning rack on the power rod is matched with the sleeve rods to fix cable sheaths in advance, the sheaths do not need to be mounted one by one when replaced, follow-up detection can be carried out only by placing the sleeve rods with the mounted sheaths on the positioning rack, the sheath replacement time is effectively shortened, and meanwhile, the cable sheaths can be conveniently replaced. The multiple sets of power rods rotate synchronously through the second chain wheel and the second chain, it is ensured that the multiple sets of positioning frames act synchronously, the replacement efficiency is further improved, and great convenience is brought to detection work of the cable sheath.

Description

Technical Field

[0001] The invention relates to the field of aging test equipment, in particular to a cable sheath thermal aging test equipment. Background Art

[0002] Cables play a vital role in the fields of power transmission and communication in modern society. As a key part of protecting cables, the performance of cable sheath directly affects the service life and safety of cables. Cable sheath thermal aging test equipment is mainly used to simulate the aging process of cable sheath under different temperature conditions. By testing and analyzing various performance indicators of cable sheath before and after aging, the heat aging resistance of cable sheath is evaluated, providing an important basis for cable design, production and quality control.

[0003] The cable sheath thermal aging test equipment in the prior art usually consists of a heating system, a temperature control system, a ventilation system and a test chamber; the heating system can provide a stable high-temperature environment, the temperature control system can accurately control the test temperature, and the ventilation system ensures air circulation in the test chamber to avoid local overheating; the advantage of this equipment is that it can more accurately simulate the thermal aging of the cable sheath in actual use, provide reliable test data for R&D personnel, and help improve the quality and reliability of the cable sheath; when using the equipment on the market for thermal aging testing of the sheath of small cables, most of them use a clamp to clamp the sheath. Because it is mainly used to clamp the sheath of small cables, the clamps of this type of thermal aging test equipment are mostly paper clips, or thin steel wires and other items. At the same time, a storage rack will be fixedly installed in the thermal aging test equipment, and a hook for hanging the clamp will be installed on the storage rack. When testing, the cable is fixed and hung in the thermal aging test equipment for testing.

[0004] However, in actual use, the above-mentioned thermal aging test equipment requires the user to manually remove the clamps one by one after testing the sheath, and then re-hang the clamps with the sheath in the thermal aging test equipment. Since the number of sheaths tested each time is relatively large, it takes a relatively long time to replace them one by one, and the whole operation is relatively inconvenient. In order to improve the replacement efficiency of the sheath and improve the testing efficiency, it is urgently needed to make improvements based on the existing thermal aging test equipment. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a cable sheath thermal aging test device to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a cable sheath thermal aging test device, comprising a test cabinet and a rack, the rack being rotatably mounted in the test cabinet, a power rod being rotatably mounted at the bottom of the rack, a positioning frame being fixedly mounted on the power rod, and a sleeve rod being provided on the positioning frame, and a clamp for fixing the cable sheath being installed on the sleeve rod; A transmission rod connected to the rack is rotatably installed in the test cabinet, and a stepping motor connected to the transmission rod is installed on the outer wall of the test cabinet; The outer wall of the power rod is provided with a gear, and the inner wall of the test cabinet is provided with a transmission groove corresponding to the gear, for driving the gear to rotate; The outer wall of the test cabinet is provided with a discharge groove corresponding to the sleeve rod, and the opening position of the discharge groove corresponds to the position after the angle of the storage rack is changed. The outer wall of the test cabinet is installed with a material door for sealing the discharge groove, and a transmission mechanism corresponding to the material door is installed in the test cabinet, and the transmission mechanism is connected to the transmission rod.

[0007] By adopting the above technical solution, when replacing the sheath, there is no need to install them one by one. It is only necessary to place the sheath rod with the installed sheath on the positioning frame for subsequent inspection, which effectively shortens the time for replacing the sheath and brings great convenience to the inspection of the cable sheath.

[0008] Furthermore, the power rods are installed in multiple groups at equal intervals at the bottom of the rack, and two groups of positioning frames are symmetrically installed on the power rods, a counterweight plate is installed between the two groups of positioning frames, and the counterweight plate is used to connect the two groups of positioning frames.

[0009] By adopting the above technical solution, it is ensured that the positioning frame will rotate under the gravity of the positioning frame and the counterweight plate, so that it is convenient for the user to place the sleeve rod on the positioning frame.

[0010] Furthermore, a group of sleeve rods are provided on the two groups of positioning frames, and the counterweight plates installed on the side walls of the positioning frames are staggered from the positions of the sleeve rods.

[0011] By adopting the above technical solution, both ends of the sleeve rod are supported by the positioning frame, thereby ensuring the stability of the sleeve rod on the positioning frame.

[0012] Furthermore, guide wheels are installed at both ends of the sleeve rod, and the distance between the guide wheels is greater than the distance between the positioning frames.

[0013] By adopting the above technical solution, the setting of the guide wheel can limit the lateral position of the sleeve rod after it is installed on the positioning frame.

[0014] Furthermore, the corners on both sides of the top of the rack are designed to be beveled, and the width of the top of the rack is smaller than the spacing between the guide wheels, and the discharge trough and the material door are both provided with guide troughs corresponding to the beveled angles of the top of the rack.

[0015] By adopting the above technical solution, the guide wheel will be restricted when driving the sleeve rod to move outward, ensuring that the guide wheel and the sleeve rod can slide out of the test cabinet smoothly.

[0016] Furthermore, a plurality of racks are installed in the test cabinet, and sprockets are installed on the transmission rods on the outer walls of the racks, and the sprockets are connected by chains.

[0017] By adopting the above technical solution, it is ensured that all the racks rotate synchronously, so that the angles of change of all the racks are the same.

[0018] Furthermore, teeth corresponding to the gear are installed on the inner wall of one side of the transmission groove, and only half of the area of ​​the inner wall of one side of the transmission groove is installed with teeth, and the spacing between the inner walls of the transmission groove is greater than the diameter of the gear.

[0019] By adopting the above technical solution, the user saves time in manually removing the covers one by one after opening the cabinet door, thereby improving the use efficiency of the test cabinet.

[0020] Furthermore, the power rods are all equipped with sprockets 2, and the sprockets 2 are connected by chains 2. Multiple groups of sprockets 3 corresponding to chains 2 are installed in the storage rack, and the installation positions of the sprockets 3 and the sleeve rods are staggered.

[0021] By adopting the above technical solution, it is ensured that multiple groups of positioning frames will rotate synchronously and multiple groups of sleeve rods will fall synchronously.

[0022] Furthermore, the material door is rotatably installed in multiple groups on the outer wall of the test cabinet through a rotating shaft, and the outer wall of the material door is larger than the opening size of the discharge chute, and a sealing member is provided on the outer wall of the material door.

[0023] By adopting the above technical solution, it is ensured that the material door can smoothly cover the discharge chute, thereby reducing the probability of heat leakage when the test cabinet is in use.

[0024] Furthermore, the transmission mechanism includes a sprocket four installed on the outer wall of the transmission rod and a sprocket five installed on the rotating shaft of the material gate. The sprocket four and the sprocket five are connected by a three-phase chain, and the diameter and the number of teeth of the sprocket four are four times the diameter and the number of teeth of the sprocket five. Multiple groups of sprockets five are installed on the rotating shafts of the material gates, and the multiple groups of sprockets five are connected by a four-phase chain.

[0025] By adopting the above technical solution, the angle of the material door after rotation corresponds to the angle of the discharge chute, further ensuring that the sleeve rod will smoothly leave the test cabinet.

[0026] In summary, the present invention mainly has the following beneficial effects: The cable sheath thermal aging test equipment of the present invention greatly improves the replacement efficiency of the sheath through its ingenious structural design. When replacing the sheath with traditional thermal aging test equipment, the user needs to manually remove the clamps one by one and then re-hang the clamps with the sheath fixed. The operation is cumbersome and time-consuming. In the present invention, a power rod is rotatably installed at the bottom of the storage rack. The positioning frame on the power rod cooperates with the sleeve rod to fix the cable sheath in advance. When replacing the sheath, there is no need to install them one by one. Only the sleeve rod with the installed sheath needs to be placed on the positioning frame for subsequent inspection, which effectively shortens the time for replacing the sheath. At the same time, multiple groups of power rods are rotated synchronously through sprocket two and chain two to ensure that multiple groups of positioning frames move synchronously, further improving the replacement efficiency and bringing great convenience to the inspection of the cable sheath.

[0027] The present invention has a high degree of automation. After the sheath detection is completed, the stepper motor is started, the storage rack rotates to change the angle of the positioning rack, the sleeve rod automatically falls off, and the sleeve rod on a group of storage racks closest to the ground will directly fall into the discharge groove opened on the inner wall of the test cabinet, and smoothly slide out of the test cabinet under the action of the guide wheel and the guide groove, so that the aged sheath is automatically taken out of the test cabinet, eliminating the operation of manually taking out the sheath. In addition, the material door is synchronously rotated and opened with the storage rack under the action of the transmission mechanism, and there is no need to manually open the material door, which further improves the automation level of the equipment. This highly automated design not only improves work efficiency, but also reduces errors and labor intensity caused by manual operation, making the test process more stable and reliable.

[0028] The cable sheath thermal aging test equipment of the present invention has a reasonable structural design, and the synergistic effect of various components ensures the stable operation of the equipment. The storage rack is rotatably installed in the test cabinet and can change its angle, which is convenient for the user to put the sheath into the test cabinet. The positioning frame and the sleeve rod on the power rod cooperate to realize the rapid fixation and replacement of the sheath. The setting of the counterweight plate increases the weight of the positioning frame to ensure that when the power rod loses the gear restriction, the positioning frame can rotate under the action of gravity, which is convenient for the user to place the sleeve rod. The design of the guide wheel supports and limits the sleeve rod to avoid direct contact between the sleeve rod and other components, and at the same time plays a guiding role in the process of the sleeve rod falling and sliding out of the test cabinet. The setting of transmission components such as sprocket one, chain one, sprocket two, chain two, sprocket three, sprocket four, chain three, and sprocket five realizes the synchronous movement of multiple groups of storage racks, power rods and material doors, making the operation of the equipment smoother. This reasonable structural design improves the practicability and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure after sectioning of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the storage rack of the present invention; Figure 4 For the present invention Figure 2 A schematic diagram of the three-dimensional structure of the storage rack after partial sectioning in the state; Figure 5 It is a schematic diagram of the three-dimensional structure of the storage rack of the present invention after sectioning; Figure 6 It is a three-dimensional structural schematic diagram of the positioning frame and sleeve rod of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the test cabinet after the rack of the present invention is rotated and then cut open; Figure 8 For the present invention Figure 7 Plan view after removing the stepper motor in the state; Fig. 9 It is a schematic diagram of the three-dimensional structure of the test cabinet of the present invention after partial cut-away; Fig.10 It is a three-dimensional structural schematic diagram of the transmission mechanism of the present invention.

[0030] In the figure: 1. test cabinet; 2. storage rack; 3. transmission rod; 30. stepper motor; 31. sprocket one; 32. chain one; 4. power rod; 40. gear; 401. transmission slot; 41. sprocket two; 42. chain two; 43. sprocket three; 5. positioning frame; 51. counterweight plate; 6. sleeve rod; 7. guide wheel; 71. wheel slot; 8. discharge slot; 9. material door; 10. guide slot; 11. sprocket four; 12. sprocket five; 13. chain three; 14. chain four. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The following describes an embodiment of the present invention based on its overall structure.

[0033] This embodiment provides a cable sheath thermal aging test device, such as Figure 1 - Fig.10 As shown, it includes a test cabinet 1 and a storage rack 2; The rack 2 is rotatably installed in the test cabinet 1, so that the angle of the rack 2 can be changed, so that the distance between the end of the rack 2 close to the test cabinet 1 and the door of the test cabinet 1 is shortened, which is convenient for the user to put the sheath into the test cabinet 1 later; In this embodiment, a power rod 4 is further rotatably installed at the bottom of the storage rack 2, and a positioning frame 5 is fixedly installed on the power rod 4, and a sleeve rod 6 is provided on the positioning frame 5, and a clamp for fixing the cable sheath is installed on the sleeve rod 6, so that when the user needs to test the sheath, it only needs to be fixed on the sleeve rod 6 in advance, and then the sleeve rod 6 with the sheath installed is placed on the positioning frame 5, and subsequent testing can be carried out, eliminating the operation of installing the sheaths one by one during each test, thereby effectively shortening the time for replacing the sheath and improving the use efficiency.

[0034] Exemplarily, in this embodiment, multiple groups of power rods 4 are installed at equal intervals at the bottom of the storage rack 2, and two groups of positioning frames 5 are symmetrically installed at the ends of each group of power rods 4, and a group of sleeve rods 6 is provided on each of the two groups of positioning frames 5, so that both ends of the sleeve rods 6 are supported by the positioning frames 5, thereby ensuring the stability of the sleeve rods 6 on the positioning frames 5; It should be noted that in the present embodiment, a group of counterweight plates 51 will be installed between the two groups of positioning frames 5 on each group of power rods 4. Both ends of the counterweight plates 51 are fixedly connected to the outer walls of the positioning frames 5, so that the counterweight plates 51 are used to connect the two groups of positioning frames 5, ensuring that the two groups of positioning frames 5 will support each other under the action of the counterweight plates 51. At the same time, the counterweight plates 51 will increase the weight of the positioning frames 5, ensuring that when the power rods 4 lose the restriction given by the gears 40, the positioning frames 5 will rotate under the gravity of the positioning frames 5 and the counterweight plates 51, so that the user can place the sleeve rod 6 on the positioning frames 5. At the same time, the counterweight plates 51 installed on the side walls of the positioning frames 5 are staggered with the sleeve rod 6, ensuring that the setting of the counterweight plates 51 will not affect the use of the sleeve rod 6 and the clamp on the sleeve rod 6.

[0035] See also Figure 3 - Figure 5 In this embodiment, a sprocket 2 41 is further installed on each group of power rods 4. When the power rods 4 rotate, the sprocket 2 41 is driven to rotate synchronously. At the same time, because the sprockets 41 are connected by chains 42, when one group of power rods 4 starts to rotate, multiple groups of power rods 4 are caused to rotate synchronously under the action of the sprockets 41 and the chains 42, ensuring that multiple groups of positioning frames 5 rotate synchronously and multiple groups of sleeve rods 6 fall synchronously. At the same time, the present embodiment further installs multiple sets of sprocket three 43 corresponding to the chain two 42 in the storage rack 2. It should be noted that the installation positions of the sprocket three 43 and the sleeve rod 6 in the present embodiment are staggered, so that the settings of the sprocket two 41 and the chain two 42 and the sprocket three 43 will not affect the falling of the sleeve rod 6 and the rotation of the positioning frame 5.

[0036] See also Figure 1 - Figure 4 and Figure 7In this embodiment, a transmission rod 3 fixedly connected to the rack 2 is further rotatably installed in the test cabinet 1, so that it rotates synchronously with the rack 2. Because a stepper motor 30 connected to the transmission rod 3 is installed on the outer wall of the test cabinet 1, when the stepper motor 30 is started, the transmission rod 3 obtains the power to rotate, so that when the sheath needs to be replaced, the stepper motor 30 is started to facilitate the replacement of the sleeve rod 6.

[0037] Exemplarily, in this embodiment, multiple groups of racks 2 are installed in the test cabinet 1, and sprockets 31 are installed on the transmission rods 3 on the outer walls of the racks 2. At the same time, because the sprockets 31 are connected by chains 32, when the stepper motor 30 is running, the multiple groups of racks 2 will start to rotate synchronously under the action of sprockets 31, chains 32 and transmission rods 3.

[0038] See also Figure 7 - Fig. 9 In this embodiment, a gear 40 is further installed on the outer wall of the power rod 4, and a transmission groove 401 corresponding to the gear 40 is opened on the inner wall of the test cabinet 1. When the rack 2 starts to rotate, the gear 40 will move in the transmission groove 401. The setting of the transmission groove 401 ensures that the gear 40 will not affect the normal operation of the rack 2; At the same time, in the present embodiment, teeth corresponding to the gear 40 are installed on the inner wall of one side of the transmission groove 401. When the storage rack 2 is in a state parallel to the ground, the gear 40 is in a state of meshing with the teeth. When the storage rack 2 starts to rotate, the gear 40 will start to rotate under the action of the transmission groove 401 and the teeth, so that the gear 40 will drive the power rod 4 to start rotating, so that the power rod 4 obtains the power to drive the positioning frame 5 to rotate, so that when the storage rack 2 rotates, the angle of the positioning frame 5 will change, causing it to separate from the sleeve rod 6, so that the sleeve rod 6 will automatically fall off, and the sleeve rod 6 can be automatically removed. Because the cover is installed on the sleeve rod 6, it is undoubtedly saved The time of manually removing the covers one by one after opening the cabinet door, improves the use efficiency of the present test cabinet 1; Furthermore, since only half of the area of ​​the inner wall on one side of the transmission groove 401 is installed with teeth, when the storage rack 2 rotates 15°, the gear 40 will be separated from the teeth, and since the number of teeth in the transmission groove 401 corresponds to the gear 40, the gear 40 has rotated 180° during this process, ensuring that the positioning frame 5 and the sleeve rod 6 are separated smoothly during this process, and since the spacing between the inner walls of the transmission groove 401 is greater than the diameter of the gear 40 for driving the gear 40 to rotate, it is further ensured that the gear 40 can run smoothly in the transmission groove 401.

[0039] See also Figure 2 - Figure 5 and Figure 7 - Fig. 9In this embodiment, a discharge groove 8 corresponding to the sleeve rod 6 is further opened on the outer wall of the test cabinet 1, so that the sleeve rod 6 can move out of the test cabinet 1 through the discharge groove 8 after falling. At the same time, the position of the discharge groove 8 corresponds to the position after the angle of the rack 2 is changed, further ensuring that the sleeve rod 6 can smoothly slide into the discharge groove 8 during the rotation of the rack 2; At the same time, the present embodiment further installs a material door 9 for sealing the discharge trough 8 on the outer wall of the test cabinet 1. When the test cabinet 1 is in use, the material door 9 will block the opening of the discharge trough 8. Because the material door 9 is rotatably installed in multiple groups on the outer wall of the test cabinet 1 through a rotating shaft, the multiple groups of discharge troughs 8 are only blocked by the material door 9. Because the outer wall of the material door 9 is larger than the opening size of the discharge trough 8, it is ensured that the material door 9 can smoothly block the discharge trough 8, and the outer wall of the material door 9 is provided with a sealing member, which further improves the sealing performance of the material door 9 after closing, and reduces the probability of heat leakage when the test cabinet 1 is in use; See also Figure 7 - Fig.10 In this embodiment, a transmission mechanism corresponding to the material door 9 is further installed in the test cabinet 1, and the transmission mechanism is connected to the transmission rod 3; In some examples, the transmission mechanism includes a sprocket wheel 4 11 installed on the outer wall of the transmission rod 3 and a sprocket wheel 5 12 installed on the rotating shaft of the material door 9, and the sprocket wheel 4 11 and the sprocket wheel 5 12 are connected by a chain 3 13. When the transmission rod 3 starts to rotate, the material door 9 starts to rotate under the action of the sprocket wheel 4 11, the sprocket wheel 5 12 and the chain 3 13, so that the material door 9 starts to open synchronously with the rotation of the storage rack 2, thereby saving the time of manually opening the material door 9. At the same time, because the diameter and the number of teeth of the sprocket four 11 are four times the diameter and the number of teeth of the sprocket five 12, the material door 9 will rotate 120°, so that the angle of the material door 9 after rotation corresponds to the angle of the discharge chute 8, further ensuring that the sleeve rod 6 will smoothly leave the test cabinet 1; because the sprocket five 12 is installed on the rotating shaft of the multiple groups of material doors 9, the multiple groups of sprocket five 12 are connected by the chain four 14, so that the multiple groups of material doors 9 will move synchronously.

[0040] See also Figure 3 - Figure 6 In this embodiment, guide wheels 7 are installed at both ends of the sleeve rod 6, and wheel grooves 71 corresponding to the guide wheels 7 are opened on the storage rack 2. At the same time, the diameter of the guide wheels 7 is larger than the diameter of the sleeve rod 6, so that when the sleeve rod 6 falls, the guide wheels 7 will support the sleeve rod 6, so that the sleeve rod 6 will not directly contact with the storage rack 2, the discharge trough 8 and other components. At the same time, because the spacing between the guide wheels 7 is larger than the spacing between the positioning frames 5, the influence of the setting of the guide wheels 7 on the installation of the sleeve rod 6 is reduced. At the same time, the setting of the guide wheels 7 will also limit the lateral position of the sleeve rod 6 after it is installed on the positioning frame 5; The two side corners on the top of the rack 2 in this embodiment are configured to be an oblique angle design for guiding the guide wheels 7 at both ends of the sleeve rod 6, and the width of the top of the rack 2 is smaller than the spacing between the guide wheels 7, so that when the sleeve rod 6 descends, the guide wheels 7 will fall on the oblique angle on the rack 2, and the oblique angle will limit the guide wheels 7 to avoid a huge deviation in the sliding direction of the guide wheels 7, ensuring that the guide wheels 7 can smoothly drive the sleeve rod 6 to slide into the discharge chute 8. At the same time, the discharge chute 8 and the material door 9 are both provided with guide grooves 10 corresponding to the oblique angle of the top of the rack 2, so that the guide wheels 7 will be restricted when driving the sleeve rod 6 to move outward, ensuring that the guide wheels 7 and the sleeve rod 6 can smoothly slide out of the test cabinet 1.

[0041] The working principle of the present invention is as follows: when the sheath needs to be tested, the door of the test cabinet 1 is first opened, and then the stepper motor 30 is started, so that the transmission rod 3 starts to drive the rack 2 to rotate. Since the transmission rods 3 are connected by the sprocket 1 31 and the chain 1 32, multiple groups of racks 2 will rotate synchronously. During the rotation of the rack 2, the gear 40 will start to rotate under the action of the teeth in the transmission groove 401, and then the gear 40 drives the power rod 4 to rotate. As the power rod 4 rotates, the angle of the positioning frame 5 will change. When the rack 2 rotates 15°, the gear 40 will separate from the teeth in the transmission groove 401. At this time, the positioning frame 5 will rotate on its own. The rack 2 starts to droop under the action of gravity and the counterweight plate 51. When the rack 2 rotates 30°, the positioning frame 5 will be perpendicular to the ground under the action of its own gravity and the counterweight plate 51. At this time, the user can place the sleeve rod 6 with the sleeve to be tested installed on the positioning frame 5. At this time, the positioning frame 5 will limit and support the sleeve rod 6. Then the user can close the cabinet door and start the stepper motor 30 again, so that the rack 2 starts to reverse. During this process, the gear 40 will start to reverse under the action of the teeth in the transmission groove 401, prompting the positioning frame 5 to start to rotate in the opposite direction, limit the sleeve rod 6, and ensure the fixed position of the sleeve rod 6 during the test. Finally, the test cabinet 1 is started to start testing the sleeve. When the sheath detection is completed, similarly to the above, the stepper motor 30 is started again. When the rack 2 starts to rotate and the angle of the positioning frame 5 changes, the sleeve rod 6 loses its restriction and falls downward, realizing automatic shedding. When the sleeve rod 6 falls, the guide wheel 7 will fall onto the next group of racks 2. At the same time, the sleeve rod 6 on the group of racks 2 closest to the ground will directly fall into the discharge groove 8 opened on the inner wall of the test cabinet 1. At this time, the top angle of the rack 2 and the guide groove 10 in the discharge groove 8 and the guide groove 10 on the material door 9 will restrict and guide the guide wheel 7, so that the guide wheel 7 will drive the sleeve rod 6 to slide out of the test cabinet 1 smoothly, realizing automatic removal of the aged sleeve out of the test cabinet 1, eliminating the operation of manually taking out the sleeve, making the test cabinet 1 more convenient to use; It should be noted that the guide wheels 7 on the group of racks 2 closest to the ground are lowered to the bottom and directly fall into the discharge groove 8 provided on the bottom surface of the test cabinet 1. At the same time, since the discharge groove 8 is also provided with a guide groove 10, the guide wheels 7 dropped from the reorganized racks 2 can still slide out of the test cabinet 1 smoothly.

[0042] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A cable sheath thermal aging test equipment, characterized in that: The utility model comprises a test cabinet (1) and a storage rack (2), wherein the storage rack (2) is rotatably mounted in the test cabinet (1), a power rod (4) is rotatably mounted on the bottom of the storage rack (2), a positioning rack (5) is fixedly mounted on the power rod (4), and a sleeve rod (6) is provided on the positioning rack (5), and a clamp for fixing a cable sheath is installed on the sleeve rod (6); A transmission rod (3) connected to the storage rack (2) is rotatably mounted in the test cabinet (1), and a stepping motor (30) connected to the transmission rod (3) is mounted on the outer wall of the test cabinet (1); A gear (40) is mounted on the outer wall of the power rod (4), and a transmission groove (401) corresponding to the gear (40) is formed on the inner wall of the test cabinet (1) for driving the gear (40) to rotate; The outer wall of the test cabinet (1) is provided with a discharge groove (8) corresponding to the sleeve rod (6), and the opening position of the discharge groove (8) corresponds to the position of the storage rack (2) after the angle is changed. The outer wall of the test cabinet (1) is provided with a material door (9) for sealing the discharge groove (8), and a transmission mechanism corresponding to the material door (9) is installed in the test cabinet (1), and the transmission mechanism is connected to the transmission rod (3).

2. A cable sheath thermal aging test equipment according to claim 1, characterized in that: A plurality of power rods (4) are installed at equal intervals at the bottom of the storage rack (2), and two groups of positioning frames (5) are symmetrically installed on each power rod (4). A counterweight plate (51) is installed between the two groups of positioning frames (5), and the counterweight plate (51) is used to connect the two groups of positioning frames (5).

3. A cable sheath thermal aging test equipment according to claim 1, characterized in that: A set of sleeve rods (6) are provided on the two sets of positioning frames (5), and the counterweight plates (51) installed on the side walls of the positioning frames (5) are staggered from the sleeve rods (6).

4. A cable sheath thermal aging test equipment according to claim 1, characterized in that: Guide wheels (7) are installed at both ends of the sleeve rod (6), and the spacing between the guide wheels (7) is greater than the spacing between the positioning frames (5).

5. A cable sheath thermal aging test equipment according to claim 4, characterized in that: The side corners on both sides of the top of the storage rack (2) are designed to be beveled, and the width of the top of the storage rack (2) is smaller than the spacing between the guide wheels (7), and the discharge trough (8) and the material door (9) are both provided with a guide trough (10) corresponding to the bevel of the top of the storage rack (2).

6. The cable sheath thermal aging test equipment according to claim 1, characterized in that: The racks (2) are installed in a plurality of groups in the test cabinet (1), and sprocket wheels (31) are installed on the transmission rods (3) on the outer walls of the racks (2), and the sprocket wheels (31) are connected to each other via chains (32).

7. The cable sheath thermal aging test equipment according to claim 1, characterized in that: The inner wall of one side of the transmission groove (401) is provided with teeth corresponding to the gear (40), and only half of the area of ​​the inner wall of one side of the transmission groove (401) is provided with teeth, and the spacing between the inner walls of the transmission groove (401) is greater than the diameter of the gear (40).

8. The cable sheath thermal aging test equipment according to claim 1, characterized in that: The power rods (4) are all equipped with sprocket wheels (41), and the sprocket wheels (41) are connected to each other via chains (42). A plurality of groups of sprocket wheels (43) corresponding to the chains (42) are installed in the storage rack (2), and the installation positions of the sprocket wheels (43) and the sleeve rod (6) are staggered.

9. The cable sheath thermal aging test equipment according to claim 1, characterized in that: The material door (9) is rotatably mounted in groups on the outer wall of the test cabinet (1) via a rotating shaft, and the outer wall of the material door (9) is larger than the opening size of the discharge trough (8), and a sealing member is provided on the outer wall of the material door (9).

10. A cable sheath thermal aging test equipment according to claim 9, characterized in that: The transmission mechanism comprises a sprocket wheel four (11) mounted on the outer wall of the transmission rod (3) and a sprocket wheel five (12) mounted on the rotating shaft of the material gate (9); the sprocket wheel four (11) and the sprocket wheel five (12) are connected by a chain three (13); the diameter and the number of teeth of the sprocket wheel four (11) are four times the diameter and the number of teeth of the sprocket wheel five (12); a plurality of groups of the rotating shafts of the material gates (9) are each mounted with a sprocket wheel five (12); and a plurality of groups of the sprocket wheels five (12) are connected by a chain four (14).

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