Tensioning structure for conveyor belt of vulcanization drying tunnel

Abstract

The utility model aims at providing a vulcanization drying tunnel conveyor belt tensioning structure which is used for being installed on a machine frame and comprises two tensioning assemblies, the two tensioning assemblies are arranged on the machine frame in a spaced mode, each tensioning assembly comprises a supporting plate, a sliding base, a limiting plate, two guide rods and two elastic pieces, the supporting plate is arranged on the machine frame, and the sliding base is arranged on the supporting plate. One ends of the two guide rods are arranged on the supporting plate, the axes of the two guide rods are parallel to each other, the limiting plate is arranged at the ends, away from the supporting plate, of the two guide rods, the two guide rods are sleeved with the two elastic pieces respectively, the two guide rods penetrate through the sliding seat, and the sliding seat is used for being rotationally connected with a driven shaft. The chain conveying belt drives the sliding base to be away from the limiting plate, and the sliding base compresses the elastic piece. Thus, the tensioning structure of the vulcanization drying tunnel conveying belt can adaptively enable the chain conveying belt to be always kept in a tensioning state, and compared with an existing structure which needs to manually rotate a lead screw to achieve adjustment, manual intervention is not needed, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of tensioning devices, and in particular to a tensioning structure for a vulcanizing drying tunnel conveyor belt. Background Technology

[0002] A tensioning device is used to tension conveyor belts, wire ropes, or scraper chains. It ensures that the conveyor belt or wire rope has appropriate tension at the point of departure of the drive drum, preventing slippage.

[0003] Chinese patent document CN211034067U discloses a conveyor belt tensioning device, which includes a frame and a screw and nut mechanism mounted on the frame corresponding to the driven shaft of the conveyor belt. The frame has two parallel slide rails, and a sliding seat that mates with the slide rails is positioned between the two rails. Both ends of the driven shaft are connected to the sliding seat. The center of the sliding seat has a through-hole along the length of the slide rail. The screw in the screw and nut mechanism passes through the through-hole, and both ends are connected to the frame. A nut fitted on the screw is located inside the through-hole. Cylindrical locking blocks extending outwards are fixed to the center of both the top and bottom surfaces of the nut. The top and bottom of the sliding seat have locking holes for accommodating the locking blocks. Thus, by adjusting the rotation of the screw, the sliding seat slides along the slide rails, thereby adjusting the position of the driven shaft connected to the sliding seat, and thus adjusting the distance between the drive shaft and the driven shaft to tension the conveyor belt.

[0004] However, existing conveyor belt tensioning devices require manual adjustment of the screw in practical use. When used in vulcanizing ovens, the temperature difference between the stopped and running states is significant. Since the chain conveyor belts primarily used in vulcanizing ovens experience thermal expansion and contraction, their lengths differ considerably between the stopped and running states. Using conventional screw-based tensioning devices can easily cause the chain conveyor belt to detach from the drive and driven shafts. Therefore, to address these issues, the vulcanizing oven conveyor belt tensioning structure proposed in this application is presented. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tensioning structure for a vulcanizing drying tunnel conveyor belt that can adaptively tension a chain conveyor belt.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A vulcanizing oven conveyor belt tensioning structure for mounting on a frame includes:

[0008] Two tensioning assemblies are spaced apart on the frame. Each tensioning assembly includes a support plate, a slide, a limiting plate, two guide rods, and two elastic elements. The support plate is mounted on the frame. One end of each guide rod is mounted on the support plate, and the axes of the two guide rods are parallel to each other. The limiting plate is mounted on the end of each guide rod away from the support plate. The two elastic elements are respectively sleeved on the two guide rods. The two guide rods pass through the slide.

[0009] The slide is used to rotate with the driven shaft. When the chain conveyor belt is sleeved on the driven shaft, the chain conveyor belt drives the slide away from the limiting plate, and the slide compresses the elastic element.

[0010] Optionally, the slide is provided with two linear bearings, and the two guide rods are respectively passed through the two linear bearings.

[0011] Optionally, the slide has a swivel hole, the axis of which is perpendicular to the axis of the linear bearing, and the driven shaft passes through the swivel hole.

[0012] Optionally, a ball bearing is respectively engaged at both ends of the swivel hole, and two ball bearings pass through the driven shaft.

[0013] Optionally, the tensioning assembly further includes a base, which is adjustablely mounted on the frame, and the support plate is detachably mounted on the base.

[0014] Optionally, the elastic element is a rectangular spring.

[0015] Optionally, a sprocket is provided at each end of the passive shaft, and the sprocket is engaged with the chain conveyor belt.

[0016] Optionally, the chain conveyor belt includes two chains and several crossbars, with each end of the crossbars connected to the two chains respectively, and the two chains respectively engaging with the two sprockets.

[0017] Optionally, a drive shaft is rotatably mounted on the frame, and a drive motor is also mounted on one side of the frame. The output shaft of the drive motor is connected to the drive shaft, and the chain conveyor belt is connected to both the drive shaft and the driven shaft.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This utility model discloses a tensioning structure for a vulcanizing oven conveyor belt, which is mounted on a frame. It includes two tensioning components spaced apart on the frame. Each tensioning component comprises a support plate, a slide block, a limiting plate, two guide rods, and two elastic elements. The support plate is mounted on the frame, and one end of each guide rod is mounted on the support plate, with their axes parallel to each other. The limiting plate is located on the end of each guide rod furthest from the support plate. The two elastic elements are respectively sleeved on the two guide rods. The two guide rods pass through the slide block, which is rotatably connected to the driven shaft. When the chain conveyor belt is mounted on the driven shaft, the chain conveyor belt drives the slide block away from the limiting plate, and the slide block compresses the elastic elements. Thus, this vulcanizing oven conveyor belt tensioning structure adaptively keeps the chain conveyor belt constantly taut. Compared to existing structures that require manual adjustment by rotating a screw, this structure eliminates the need for manual intervention and is more convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the tensioning structure of the vulcanizing drying tunnel conveyor belt according to one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the tensioning component according to one embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10. Tensioning structure of vulcanizing oven conveyor belt; 110. Frame; 200. Tensioning assembly; 210. Support plate; 220. Slide; 230. Limiting plate; 240. Guide rod; 250. Elastic element; 120. Passive shaft; 130. Chain conveyor belt; 260. Linear bearing; 270. Ball bearing; 280. Base; 140. Sprocket; 131. Chain; 132. Crossbar; 150. Drive shaft; 160. Drive motor. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0026] like Figure 1 and Figure 2As shown, a tensioning structure 10 for a vulcanizing drying tunnel conveyor belt is installed on a frame 110. It includes two tensioning components 200, which are spaced apart on the frame 110. Each tensioning component 200 includes a support plate 210, a slide block 220, a limiting plate 230, two guide rods 240, and two elastic elements 250. The support plate 210 is mounted on the frame 110, and one end of each guide rod 240 is mounted on the support plate 210. The axes of the two guide rods 240 are parallel to each other. The limiting plate 230 is set on the end of the two guide rods 240 away from the support plate 210. The two elastic elements 250 are respectively sleeved on the two guide rods 240. The two guide rods 240 pass through the slide 220. The slide 220 is used to rotate and connect with the driven shaft 120. When the chain conveyor belt 130 is sleeved on the driven shaft 120, the chain conveyor belt 130 drives the slide 220 away from the limiting plate 230, and the slide 220 compresses the elastic element 250.

[0027] It should be noted that two tensioning components 200 are installed at intervals on both sides of the frame 110. The two tensioning components 200 are rotatably connected to both ends of the driven shaft 120. The chain conveyor belt 130 is fitted onto the driven shaft 120. Thus, the two tensioning components 200 drive the driven shaft 120 to move, keeping the driven shaft 120 constantly tensioned on the chain conveyor belt 130. Specifically, the support plate 210 is bolted to the frame 110. One end of each of the two guide rods 240 is fixedly mounted on the support plate 210, and the two guide rods 240 are distributed laterally. Limiting plates 230 are fixedly connected to each of the two guide rods 240. Both guide rods 240 pass through the slide block 220, allowing the slide block 220 to slide along the guide rods 240. Two elastic elements 250 are respectively fitted onto the two guide rods 240, and the elastic elements 250 abut against the slide block 220 and the support plate 210 respectively. Thus, under the action of the chain conveyor belt 130, the driven shaft 120 drives the slide 220 to slide along the guide rod 240 away from the limiting plate 230. It should be noted that after the chain conveyor belt 130 is installed on the driven shaft 120, and at room temperature, the slide 220 remains in a state detached from the limiting plate 230. Therefore, after the chain conveyor belt 130 has been working for a period of time, it expands due to increased temperature, thus increasing the total circumference of the chain conveyor belt 130. Because the slide 220 is constantly pushed by the elastic element 250 to approach the limiting plate 230, the chain conveyor belt 130 remains taut. When the total circumference of the chain conveyor belt 130 decreases due to decreased temperature, it forcibly compresses the elastic element 250, thus maintaining the taut state of the chain conveyor belt 130. Thus, the vulcanizing oven conveyor belt tensioning structure 10 of this application can adaptively keep the chain conveyor belt 130 in a taut state at all times. Compared with the existing structure that requires manual rotation of the screw to achieve adjustment, it does not require manual intervention and is easy to use.

[0028] like Figure 1 and Figure 2 As shown, in one embodiment, the slide 220 is provided with two linear bearings 260, and the two guide rods 240 pass through the two linear bearings 260 respectively. In this way, installing the linear bearings 260 in the slide 220 so that the guide rods 240 pass through the linear bearings 260 can improve the sliding stability of the slide 220 relative to the guide rods 240.

[0029] like Figure 1 As shown, in one embodiment, a rotating hole is provided on the slide 220, and the axial direction of the rotating hole is perpendicular to the axial direction of the linear bearing 260. The driven shaft 120 passes through the rotating hole. In this way, the driven shaft 120 and the slide 220 are rotatably connected.

[0030] like Figure 1 As shown, in one embodiment, a ball bearing 270 is respectively engaged at both ends of the rotating hole, and two ball bearings 270 pass through the driven shaft 120. In this way, the driven shaft 120 can rotate stably relative to the slide 220, thereby enabling the driven shaft 120 to drive the chain conveyor belt 130 to rotate stably relative to the frame 110.

[0031] like Figure 1 and Figure 2 As shown, in one embodiment, the tensioning assembly 200 further includes a base 280, which is adjustablely mounted on the frame 110, and a support plate 210 is detachably mounted on the base 280.

[0032] It should be noted that, under normal temperature conditions, it is necessary to ensure that the chain conveyor belt 130 drives the slide 220 to compress the elastic element 250, while simultaneously keeping the slide 220 separated from the limiting plate 230. The base 280 is adjustablely mounted and fixed to the frame 110 with bolts, and the support plate 210 is then locked and fixed to the base 280 with bolts. Thus, by adjusting the position of the base 280 on the frame 110, it can be ensured that the chain conveyor belt 130 reliably compresses the elastic element 250 by driving the slide 220, while simultaneously keeping the slide 220 separated from the limiting plate 230.

[0033] In one embodiment, the elastic element 250 is a rectangular spring. Specifically, a rectangular spring, also called a mold spring, is a cylindrical helical spring with a rectangular cross-section. Compared to a cylindrical helical spring with a circular cross-section, under the same spatial conditions, a rectangular cross-section cylindrical helical compression spring has greater stiffness and absorbs more energy, thus reliably pushing the chain conveyor belt 130 to maintain its tension.

[0034] like Figure 1 and Figure 2As shown, in one embodiment, a sprocket 140 is respectively provided at both ends of the driven shaft 120, and the sprocket 140 is engaged with the chain conveyor belt 130. In this way, the sprocket 140 drives the chain conveyor belt 130 to rotate.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the chain conveyor belt 130 includes two chains 131 and several crossbars 132. Both ends of each crossbar 132 are connected to the two chains 131, and the two chains 131 are engaged with two sprockets 140. Thus, the driven shaft 120 drives the two sprockets 140 to rotate synchronously, thereby causing the two sprockets 140 to drive the two chains 131 and each crossbar 132 to rotate as a whole.

[0036] like Figure 1 As shown, in one embodiment, a drive shaft 150 is rotatably mounted on the frame 110, and a drive motor 160 is also mounted on one side of the frame 110. The output shaft of the drive motor 160 is connected to the drive shaft 150, and the chain conveyor belt 130 is connected to the drive shaft 150 and the driven shaft 120 respectively.

[0037] It should be noted that the drive shaft 150 is located below the driven shaft 120, and a sprocket is also installed on the drive shaft 150. The sprocket is engaged with the chain conveyor belt 130, and the drive shaft 150 is driven to rotate by the drive motor 160, so that the chain conveyor belt 130 can rotate continuously relative to the frame 110. With the tensioning structure of this application, it can be ensured that the chain conveyor belt 130 remains taut throughout the entire working process.

[0038] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tensioning structure for a vulcanizing drying tunnel conveyor belt, used for mounting on a frame, characterized in that, include: Two tensioning assemblies are spaced apart on the frame. Each tensioning assembly includes a support plate, a slide, a limiting plate, two guide rods, and two elastic elements. The support plate is mounted on the frame. One end of each guide rod is mounted on the support plate, and the axes of the two guide rods are parallel to each other. The limiting plate is mounted on the end of each guide rod away from the support plate. The two elastic elements are respectively sleeved on the two guide rods. The two guide rods pass through the slide. The slide is used to rotate with the driven shaft. When the chain conveyor belt is sleeved on the driven shaft, the chain conveyor belt drives the slide away from the limiting plate, and the slide compresses the elastic element.

2. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 1, characterized in that, The slide is provided with two linear bearings, and the two guide rods are respectively passed through the two linear bearings.

3. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 2, characterized in that, The slide block has a rotating hole, the axis of which is perpendicular to the axis of the linear bearing, and the driven shaft passes through the rotating hole.

4. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 3, characterized in that, Two ball bearings are respectively engaged at both ends of the swivel hole, and two ball bearings pass through the driven shaft.

5. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 1, characterized in that, The tensioning assembly also includes a base, which is adjustablely mounted on the frame, and a support plate is detachably mounted on the base.

6. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 1, characterized in that, The elastic element is a rectangular spring.

7. The vulcanizing drying tunnel conveyor belt tensioning structure according to claim 1, characterized in that, A sprocket is provided at each end of the passive shaft, and the sprockets are engaged with the chain conveyor belt.

8. The tensioning structure of the vulcanizing drying tunnel conveyor belt according to claim 7, characterized in that, The chain conveyor belt includes two chains and several crossbars. Both ends of each crossbar are connected to the two chains, and the two chains are respectively engaged with the two sprockets.

9. The vulcanizing drying tunnel conveyor belt tensioning structure according to claim 1, characterized in that, The frame is also rotatably mounted with a drive shaft, and a drive motor is also mounted on one side of the frame. The output shaft of the drive motor is connected to the drive shaft, and the chain conveyor belt is connected to both the drive shaft and the driven shaft.

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