Dust-free drag chain with good protectiveness

Abstract

The utility model relates to the technical field of drag chains, and discloses a dust-free drag chain with good protectiveness, which comprises a connector and a driving mechanism, the driving mechanism comprises a connecting frame, and a second gear is rotatably arranged in the middle of one side of the connecting frame; a ratchet wheel is fixedly arranged on one side of the second gear, and a rotating handle is fixedly arranged on one side of the ratchet wheel. A first gear and a third gear are fixedly arranged at the upper end and the lower end of one side of the connecting frame correspondingly. A second transmission shaft is fixedly arranged on one side of the first gear, and a first transmission shaft is fixedly arranged on one side of the third gear. The first gear, the third gear and the second gear are meshed with one another. A first thread is fixedly arranged on the side, close to the first gear, of the second transmission shaft. According to the utility model, the installation efficiency is high, and the device can be accurately adjusted to adapt to different cables; the cable is prevented from twisting and falling off due to rigid connection; locking is reliable, installation stability is guaranteed, and use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable chain technology, and in particular to a dust-free cable chain with good protection. Background Technology

[0002] In modern industrial production, cable chains are widely used in various reciprocating motion applications as important components to protect built-in cables, oil pipes, air pipes, water pipes, etc. Especially in fields with extremely high requirements for environmental cleanliness, such as semiconductor manufacturing and precision electronic equipment production, cleanroom cable chains are key components to ensure the stable operation of sensitive electronic equipment. They can effectively reduce the risk of contaminants entering the equipment and ensure the safe operation of the equipment in a cleanroom environment.

[0003] However, most existing cable carriers have significant drawbacks when installing internal cables. Due to the considerable length of the cable carriers and the thickness of some cables, installers must manually thread the cables through the carrier, a process that is not only cumbersome and physically demanding but also severely impacts installation efficiency. Furthermore, during the reciprocating motion of traditional cable carriers, friction between the carrier body and the cables easily generates fine particles. If these particles enter sensitive electronic equipment, they can severely damage equipment performance and lifespan, failing to meet the demands of high-precision, high-cleanliness industrial production environments.

[0004] Therefore, those skilled in the art have provided a dust-free cable chain with good protection to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dust-free cable chain with good protection, high installation efficiency, precise adjustment to adapt to different cables, a stable structure, rigid connection to prevent cable twisting and falling off, reliable locking to ensure stable installation and improve safety during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dust-free cable chain with good protection, including a connector and a drive mechanism, wherein the drive mechanism includes a connecting frame, and a second gear is rotatably arranged in the middle of one side of the connecting frame;

[0007] A ratchet is fixedly provided on one side of the second gear, and a rotating handle is fixedly provided on one side of the ratchet;

[0008] Gear No. 1 and Gear No. 3 are fixedly installed at the top and bottom ends of one side of the connecting frame, respectively.

[0009] A second drive shaft is fixedly installed on one side of the first gear, and a first drive shaft is fixedly installed on one side of the third gear.

[0010] Gear No. 1, Gear No. 3 and Gear No. 2 mesh with each other;

[0011] The No. 2 drive shaft is fixedly provided with a No. 1 thread on the side closer to the No. 1 gear, and the No. 2 drive shaft is fixedly provided with a No. 2 thread on the side away from the No. 3 gear.

[0012] Two inner sliders are slidably arranged at both the upper and lower ends of the connecting frame, and a drive wheel is rotatably arranged between each pair of the four inner sliders.

[0013] Two of the four inner sliders are fixedly equipped with servo motors at their upper ends.

[0014] Furthermore, the second drive shaft is rotatably positioned inside the upper two inner sliders of the four inner sliders, and the first drive shaft is rotatably positioned inside the lower two inner sliders of the four inner sliders, also at a rearward position.

[0015] Furthermore, one of the upper ends of the four inner sliders, near the first gear, is threaded around the first thread, and one of the lower ends of the four inner sliders, near the third gear, is threaded around the second thread.

[0016] Furthermore, the connecting frame is fixedly disposed at the front end of the cable chain body, and the connector head is fixedly disposed at the rear end of the cable chain body.

[0017] Furthermore, a positioning block is fixedly provided on one side of the connecting frame, and a positioning rod is rotatably provided at the rear end of the positioning block;

[0018] A pawl is rotatably provided on one side of the positioning block, and a No. 1 spring is connected between the positioning rod and the pawl;

[0019] A second spring connects the pawl to the positioning block.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model proposes a dust-free cable carrier with good protective properties. This dust-free cable carrier utilizes a drive mechanism, employing two drive wheels to clamp the cable. A servo motor drives the drive wheels to rotate, enabling the cable to automatically move into the cable carrier. This design significantly reduces the labor intensity of installation personnel, avoids the tedious process of manual cable threading, greatly improves cable installation efficiency, shortens equipment installation and commissioning time, and saves industrial production significant labor and time costs.

[0022] 2. The dust-free cable chain with good protection proposed in this utility model has the following advantages. On the one hand, the cable chain body is equipped with rollers inside, which allows the cable to slide more easily inside the cable chain, reducing the friction between the cable chain body and the cable. This avoids the generation of fine particles due to friction and effectively prevents these contaminants from entering sensitive electronic equipment, thus protecting the normal operation of the equipment. On the other hand, the ratchet-pawl structure in the drive mechanism can lock the movement position of the cable, preventing the cable from accidentally sliding during installation. This further improves the protection effect of the cable chain on the internal cables and ensures that the equipment can still work stably under complex working conditions. Attached Figure Description

[0023] Figure 1 This is an isometric schematic diagram of the present invention;

[0024] Figure 2 This is a cross-sectional axonometric schematic diagram of the drive mechanism of this utility model;

[0025] Figure 3 This is a partial isometric schematic diagram of the drive mechanism of this utility model.

[0026] Legend:

[0027] 1. Connector; 2. Cable chain body; 3. Drive mechanism; 301. Connecting frame; 302. Servo motor; 303. Positioning block; 304. Rotary handle; 305. Positioning rod; 306. Spring No. 1; 307. Pawl; 308. Spring No. 2; 309. Thread No. 1; 310. Gear No. 1; 311. Gear No. 2; 312. Ratchet; 313. Inner slider; 314. Drive wheel; 315. Thread No. 2; 316. Drive shaft No. 1; 317. Gear No. 3; 318. Drive shaft No. 2. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1-3This utility model provides an embodiment of a dust-free cable chain with good protection, including a connector 1 and a drive mechanism 3. The drive mechanism 3 includes a connecting frame 301, and a second gear 311 is rotatably disposed on one side of the connecting frame 301. A ratchet 312 is fixedly disposed on one side of the second gear 311, and a rotating handle 304 is fixedly disposed on one side of the ratchet 312. A first gear 310 and a third gear 317, both with a module of 2mm and 24 teeth respectively, are fixedly disposed at the upper and lower ends of one side of the connecting frame 301. A second drive shaft 318 is fixedly disposed on one side of the first gear 310, and a first drive shaft 316 is fixedly disposed on one side of the third gear 317. The first gear 310, the third gear 317, and the second gear 311 mesh with each other. The second drive shaft 318 is fixedly provided with a first thread 309 with a pitch of 2mm and a lead angle of 15° on the side near the first gear 310. The first drive shaft 316 is fixedly provided with a second thread 315 of the same specification on the side away from the third gear 317, but the direction of the thread is opposite, which facilitates the position control of the drive wheel 314. Two inner sliders 313 are slidably provided at both the upper and lower ends of the connecting frame 301. The inner sliders 313 are engaged with the connecting frame 301 by a rectangular guide rail with a width of 15mm and a fit clearance of 0.05-0.1mm. A polyurethane drive wheel 314 with an outer diameter of 60mm, a width of 25mm, and a surface hardness of Shore A 85 is rotatably provided between each pair of the four inner sliders 313. A servo motor 302 is fixedly provided at the upper end of each of the four inner sliders 313.

[0030] Specifically, rotating the handle 304 drives the second gear 311 to rotate, which in turn drives the first gear 310 and the third gear 317 to rotate synchronously. The rotation of the first gear 310 drives the second drive shaft 318 to rotate, and the rotation of the third gear 317 drives the first drive shaft 316 to rotate. Since the threads on the second drive shaft 318 and the first drive shaft 316 engage with the inner slider 313, the rotational motion of the gears is converted into the linear motion of the inner slider 313, thereby adjusting the spacing of the drive wheel 314. After the spacing is adjusted, the servo motor 302 drives the drive wheel 314 to rotate, using friction to move the cable into the cable chain. The gear transmission system has a compact structure, high transmission efficiency, and can precisely adjust the spacing of the drive wheel 314, making it suitable for cable installation with diameters of 6-50mm. The threaded transmission is smooth, has a strong load-bearing capacity, and can reliably transmit power and maintain a stable adjustment position. The material of the drive wheel 314 provides sufficient friction while avoiding damage to the cable sheath, effectively improving the efficiency and quality of cable installation.

[0031] The second drive shaft 318 is rotatably positioned inside the upper two inner sliders 313 at a rearward position. The first drive shaft 316 is rotatably positioned inside the lower two inner sliders 313 at a rearward position. One threaded section of the upper end of each inner slider 313, near the first gear 310, is fitted around the first thread 309. One threaded section of the lower end of each inner slider 313, near the third gear 317, is fitted around the second thread 315. This structure further ensures that the drive shaft and inner sliders, through threaded engagement, stably achieve synchronous opening and closing of the drive wheel 314, guaranteeing the stability and reliability of the adjustment process.

[0032] The connecting frame 301 is fixedly installed at the front end of the cable chain body 2, and the connector 1 is fixedly installed at the rear end of the cable chain body 2. The connecting frame 301 and the cable chain body 2 are connected by M8×20 hexagon socket head cap screws with a spacing of 50mm, and the connection strength is not less than 5kN; the connector 1 is made of 8mm thick aluminum alloy with an anodized surface, and can withstand a maximum tensile force of 20kN.

[0033] Specifically, the drive mechanism 3 is rigidly connected to the front end of the cable carrier body 2 through the connecting frame 301, so that the cable can obtain a stable driving force when it enters the cable carrier; the connector 1 is used to fix the connection with the equipment end, ensuring the stability of the overall structure of the cable carrier and effectively transmitting the tension and thrust during the movement of the cable carrier. This rigid connection method between the front and rear ends ensures the structural stability of the cable carrier during use, so that the cable does not twist or fall off during reciprocating motion, extending the service life of the cable carrier and the cable, and is suitable for various industrial scenarios.

[0034] A positioning block 303 is fixedly installed on one side of the connecting frame 301. A positioning rod 305 is rotatably installed at the rear end of the positioning block 303. A pawl 307 is rotatably installed on one side of the positioning block 303. A first spring 306 with an elastic modulus of 800 MPa and a preload of 5 N is connected between the positioning rod 305 and the pawl 307. A second spring 308 with an elastic modulus of 500 MPa and a preload of 3 N is connected between the pawl 307 and the positioning block 303. The ratchet 312 has a module of 2 mm, 24 teeth, and a tooth angle of 60°.

[0035] Specifically, when the second gear 311 drives the ratchet 312 to rotate clockwise, the pawl 307 slides across the tooth groove, at which time the pawl 307 compresses the second spring 308; when locking is required, the pawl 307 engages with the tooth groove of the ratchet 312 under the action of the first spring 306, preventing the ratchet from rotating counterclockwise, thus locking the cable's position. This ratchet-pawl locking mechanism has a simple structure and high reliability, and can lock the cable position without additional power, effectively preventing the cable from retracting due to its own weight or external force during installation, ensuring the stability and safety of the cable installation process.

[0036] Working principle: When cable installation is required, the cable is first placed between the two drive wheels 314, and the servo motor 302 is started. The servo motor 302 drives the drive wheels 314 to rotate, using friction to move the cable into the cable chain. During this process, the power of the servo motor 302 is transmitted to the cable through the drive wheels 314, realizing automatic cable installation.

[0037] In the drive mechanism 3, the rotary handle 304 is fixedly connected to the ratchet 312 and the second gear 311. When the rotary handle 304 is rotated, the second gear 311 rotates accordingly, driving the first gear 310 and the third gear 317, which mesh with it, to rotate. The rotation of the first gear 310 drives the second transmission shaft 318 to rotate, and the rotation of the third gear 317 drives the first transmission shaft 316 to rotate. Since the second transmission shaft 318 is provided with a first thread 309 and the first transmission shaft 316 is provided with a second thread 315, and some of the four inner sliders 313 are respectively threaded around the first thread 309 and the second thread 315, the rotation of the first gear 310 and the third gear 317 can be transmitted through the threads, causing the inner sliders 313 to slide at the upper and lower ends of the connecting frame 301, thereby adjusting the position of the drive wheel 314 to adapt to the installation requirements of cables of different thicknesses.

[0038] Meanwhile, to prevent the drive wheel 314 from reversing during the movement of the cable, the drive mechanism 3 is equipped with a ratchet 312-pawl 307 locking structure. When the second gear 311 rotates, the ratchet 312, which is fixedly connected to it, rotates synchronously. Under the action of the first spring 306 and the second spring 308, the pawl 307 engages with the tooth groove of the ratchet 312. When the ratchet 312 rotates clockwise, the pawl 307 compresses the second spring 308 under the push of the tooth groove, smoothly passing through the tooth groove; when the ratchet 312 has a counterclockwise tendency, the pawl 307, under the tension of the first spring 306, engages with the tooth groove of the ratchet 312, preventing the ratchet 312 from reversing, thereby locking the position of the cable movement and ensuring the stability and safety of the cable installation process.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust-free cable chain with good protection, comprising a connector (1) and a drive mechanism (3), characterized in that: The drive mechanism (3) includes a connecting frame (301), and a second gear (311) is rotatably disposed on one side of the connecting frame (301). A ratchet (312) is fixedly provided on one side of the second gear (311), and a rotating handle (304) is fixedly provided on one side of the ratchet (312). The first gear (310) and the third gear (317) are fixedly installed at the upper and lower ends of one side of the connecting frame (301). A second drive shaft (318) is fixedly installed on one side of the first gear (310), and a first drive shaft (316) is fixedly installed on one side of the third gear (317). The first gear (310), the third gear (317), and the second gear (311) mesh with each other; The No. 2 drive shaft (318) is fixedly provided with a No. 1 thread (309) on the side close to the No. 1 gear (310), and the No. 1 drive shaft (316) is fixedly provided with a No. 2 thread (315) on the side away from the No. 3 gear (317). The connecting frame (301) has two inner sliders (313) slidably arranged at both the upper and lower ends, and the four inner sliders (313) are rotatably arranged with drive wheels (314) between each pair. Two of the four inner sliders (313) are fixedly equipped with servo motors (302) at their upper ends.

2. A dust-free drag chain cable of claim 1, wherein: The second drive shaft (318) is rotatably positioned inside the upper two inner sliders (313) of the four inner sliders (313) at a rearward position, and the first drive shaft (316) is rotatably positioned inside the lower two inner sliders (313) of the four inner sliders (313) at a rearward position.

3. A clean chain according to claim 1, wherein: One of the four inner sliders (313) has an upper thread close to the first gear (310) and is fitted around the first thread (309). One of the four inner sliders (313) has a lower thread close to the third gear (317) and is fitted around the second thread (315).

4. A clean chain according to claim 1, wherein: The connecting frame (301) is fixedly installed at the front end of the drag chain body (2), and the connector (1) is fixedly installed at the rear end of the drag chain body (2).

5. The dust-free cable chain with good protective properties according to claim 1, characterized in that: A positioning block (303) is fixedly provided on one side of the connecting frame (301), and a positioning rod (305) is rotatably provided at the rear end of the positioning block (303). A pawl (307) is rotatably provided on one side of the positioning block (303), and a No. 1 spring (306) is connected between the positioning rod (305) and the pawl (307). A second spring (308) is connected between the pawl (307) and the positioning block (303).

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