Tensioning device for speed chain conveying line

Abstract

The utility model discloses a speed chain conveyor line tensioning device which comprises a tensioning wheel support, a speed chain sprocket assembly body, sliding blocks and a screw rod, the speed chain sprocket assembly body is rotatably connected with the sliding blocks at the two ends through a wheel shaft, a guide groove is machined in the inner wall of the sliding block tensioning wheel support, the guide groove is in sliding fit with the sliding blocks, and the screw rod is arranged in the guide groove. The sliding block can move along the guide groove; a threaded hole is formed in the sliding block, the screw penetrates through the threaded hole and is in threaded fit with the threaded hole, and the two ends of the screw are connected to the tensioning wheel support. The double-speed chain conveying line tensioning device has the advantages that the double-speed chain conveying line tensioning device is installed and operated in part of electromechanical manufacturers, the use condition is tracked and known, the user reflection is good, and the double-speed chain conveying line tensioning device is accepted by the market; 2, the tensile strength and the impact resistance of the material are improved compared with those of the prior art; 3, in the tensioning degree adjusting process of the speed chain conveying line, due to the fact that the wheel shafts move in parallel, the chain wheels cannot deflect when the tensioning degree of the conveying line is adjusted, the conveying line is kept in the original state, and adjustment is more convenient; and the adjusted conveying line runs more safely and stably.

Description

Technical Field

[0001] The utility model relates to the fields of electromechanics, logistics, etc., and more specifically to a tensioning device for a double-speed chain conveyor line. Background Art

[0002] With the improvement of industrial automation level, material conveyor lines are installed in many processing enterprises. Due to the large conveying capacity of the double-speed chain, it can carry a large load; and the conveying accuracy is accurate and the operation is stable. Most of these conveyor lines use the double-speed chain as the traction and carrier to convey materials. Each double-speed chain conveyor line must be composed of at least two double-speed chains to convey materials smoothly.

[0003] In order to ensure the stable and safe operation of the double-speed chain conveyor line, a set of double-speed chain tensioning devices must be installed on each double-speed chain. The tensioning degree of the double-speed chain is adjusted by this tensioning device so that the tensioning degree of each double-speed chain is kept consistent, that is, the tightness of the double-speed chain conveyor line is appropriate.

[0004] The existing double-speed chain conveyor line tensioning device has the following deficiencies:

[0005] 1. The bracket is processed from cast iron, which is easy to break and has a short service life;

[0006] 2. Relying on the middle waist-shaped round hole to support the wheel shaft, the tension adjustment of the double-speed chain conveyor line is relatively difficult. When adjusting, the wheel shaft cannot always move smoothly, resulting in the deflection of the double-speed chain sprocket and the deviation of the double-speed chain conveyor line, causing unilateral stress on the double-speed chain walking slideway and affecting the service life of the slideway and the double-speed chain. Content of the Utility Model

[0007] In order to overcome the above defects of the prior art, the utility model provides a tensioning device for a double-speed chain conveyor line. The problem to be solved by this new double-speed chain conveyor line tensioning device is to facilitate the adjustment of the tensioning degree of the double-speed chain conveyor line and improve the stability, safety and service life of the double-speed chain conveyor line.

[0008] The technical solution of the utility model is as follows:

[0009] The double-speed chain conveyor line tensioning device includes a tensioning wheel bracket, a double-speed chain sprocket assembly, a slider, and a screw rod. The double-speed chain sprocket assembly is rotatably connected to the sliders at both ends through a wheel shaft. The inner wall of the tensioning wheel bracket of the slider is processed with a guide groove, which is slidably matched with the slider, enabling the slider to move along the guide groove; a threaded hole is provided on the slider, and the screw rod passes through the threaded hole and is in threaded cooperation. Both ends of the screw rod are connected to the tensioning wheel bracket.

[0010] The double-speed chain sprocket assembly is installed on the wheel shaft through a bearing and can rotate on the wheel shaft.

[0011] Sliders are installed at both ends of the axle, and the axle is locked to the bracket with a pressure plate and fastening bolts.

[0012] The double-speed chain sprocket assembly is assembled from a double-speed chain sprocket, a deep groove ball bearing, a retaining sleeve and a hole circlip.

[0013] Guide bosses are machined on both the upper and lower surfaces of the slider, and a hole for mating with the axle and a female thread, i.e., a threaded hole, for mating with the screw are machined in the middle part.

[0014] The adjusting screw is a full-thread screw. By rotating the screw, the slider can be driven to translate, thereby driving the axle and the double-speed sprocket to translate together, which is used to adjust the tension of the double-speed chain conveyor line. One end of the screw is the head, and the other end is connected to a nut.

[0015] The technical effects and advantages of the present utility model:

[0016] 1. The tensioning device for the double-speed chain conveyor line of the present utility model has been installed and operated in some mechanical and electrical factories, and the usage situation has been tracked and understood. The users have reported good results and it has been recognized by the market.

[0017] 2. The tensile and impact resistance properties of the material have been improved compared with before;

[0018] 3. During the process of adjusting the tension of the double-speed chain conveyor line, since the axle moves parallelly, the sprocket will not deflect when the conveyor line tension is adjusted, and the conveyor line remains in its original state, and the adjustment is more convenient; after adjustment, the conveyor line runs more safely and smoothly. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the assembly of the tensioning device for the double-speed chain conveyor line;

[0020] Figure 2 It is a schematic diagram of the left bracket;

[0021] Figure 3 It is a schematic diagram of the right bracket;

[0022] Figure 4 It is a schematic diagram of the double-speed chain sprocket assembly;

[0023] Figure 5 It is a schematic diagram of the axle;

[0024] Figure 6 It is a schematic diagram of the slider;

[0025] Figure 7 It is the adjusting screw. Detailed Description of the Preferred Embodiment

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] 1. Use a new type of double-speed chain conveyor tensioning device. The tensioning wheel bracket 1 is formed by machining ordinary carbon structural steel. Guide grooves 11 are machined on the tensioning wheel bracket, and the guide grooves 11 are in sliding fit with the slider 2; a female thread 4 matching the screw 3 is machined on the slider 2, and rotating the screw 3 can drive the slider 2 to move; the double-speed chain sprocket 5 is installed on the wheel shaft 7 through a bearing 6 and can rotate on the wheel shaft; both ends of the wheel shaft are connected to the slider. When the slider moves to an appropriate position, the wheel shaft can be locked on the bracket with a pressing plate 8 and a fastening bolt 9.

[0029] ( Figure 1 )

[0030] 2. The tensioning wheel bracket includes a left bracket and a right bracket, made of ordinary carbon structural steel, with guide grooves machined thereon. The guide grooves are in sliding fit with the slider, enabling the slider to move along the guide grooves; a process window 12 for facilitating the installation or removal of the slider is also machined on the bracket. ( Figure 2 、 Figure 3 )

[0031] 3. Double-speed chain sprocket assembly: The main body of the double-speed chain sprocket is made of 40Cr quenched and tempered material, and the sprocket teeth are subjected to high-frequency quenching to improve the fatigue strength and surface wear resistance of the sprocket; the double-speed chain sprocket assembly is assembled by a double-speed chain sprocket, a deep groove ball bearing, a retaining sleeve and a hole-type circlip. ( Figure 4 )

[0032] 4. Wheel shaft: The material of this wheel shaft is high-quality carbon structural steel and is subjected to conditioning treatment; its function is to realize the rotation of the double-speed chain sprocket; it cooperates with the slider and the screw to translate on the bracket. ( Figure 5 )

[0033] 5. Slider: The material of the slider is ordinary carbon structural steel. Guide bosses 21 are machined on its upper and lower surfaces, and holes for cooperating with the wheel shaft and female threads for cooperating with the screw are machined in the middle part. ( Figure 5 )

[0034] 6. Adjusting screw: This screw is a full-thread screw, connected to the bracket and the slider. Rotating the screw can drive the slider to translate, thereby driving the wheel shaft and the double-speed chain sprocket to translate together for adjusting the tension of the double-speed chain conveyor.

[0035] Embodiment 2

[0036] 1. Install the tensioning device of the double-speed chain conveyor line at one end of the double-speed chain conveyor line and fasten it. The double-speed chain moves along the slideway through the driving wheel and the tensioning wheel, thereby driving the load on it to move together. The tensioning device of the double-speed chain conveyor line is used to adjust the tension of the conveyor line to make the double-speed chain conveyor line run more smoothly.

[0037] 2. As can be seen from the tensioning device of the double-speed chain conveyor line, when using the new type of tensioning device of the double-speed chain conveyor line, the double-speed chain sprocket and the axle keep translating together when adjusting the screw rod, and the double-speed chain sprocket will not deflect. The conveyor line remains in its original state, only the tightness of the conveyor line is changed.

[0038] 3. The existing tensioning device of the double-speed chain conveyor line has no sliding guiding mechanism. The axle is placed in the waist-shaped grooves of the left and right brackets, and the tension of the conveyor line is adjusted by the screw rods on the two brackets. When adjusting the tightness of the conveyor line, the axle may not move parallel, which will inevitably cause the double-speed chain sprocket to deflect. It takes multiple adjustments and trial runs to make the double-speed chain conveyor line on the right track. Once the double-speed chain sprocket deflects, it will cause the double-speed chain to be stressed unilaterally and rub against the side of the double-speed chain running slideway, thereby reducing the service life of the slideway and the double-speed chain.

[0039] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The double-speed chain conveyor line tensioning device is characterized by: It includes a tensioning wheel bracket, a double-speed chain sprocket assembly, a slider, and a screw. The double-speed chain sprocket assembly is rotatably connected to the sliders at both ends through a wheel axle. The inner wall of the slider tensioning wheel bracket is processed with a guide groove, and the guide groove is slidably matched with the slider, so that the slider can move along the guide groove; a threaded hole is opened on the slider, and the screw passes through the threaded hole and is threadedly matched, and both ends of the screw are connected to the tensioning wheel bracket.

2. The double-speed chain conveyor line tensioning device according to claim 1 is characterized in that: The double-speed chain sprocket assembly is mounted on the axle through bearings and can rotate on the axle.

3. The double-speed chain conveyor line tensioning device according to claim 1 is characterized in that: Slide blocks are installed at both ends of the wheel axle, and the wheel axle is locked on the bracket by using a pressure plate and fastening bolts.

4. The double-speed chain conveyor line tensioning device according to claim 1 is characterized in that: The double-speed chain sprocket assembly is assembled from a double-speed chain sprocket, a deep groove ball bearing, a retaining sleeve and a retaining spring for a hole.

5. The double-speed chain conveyor line tensioning device according to claim 1 is characterized in that: The upper and lower surfaces of the sliding block are both processed with guide bosses, and the middle part is processed with a hole matched with the wheel axle and a female thread, that is, a threaded hole matched with the screw rod.

6. The double-speed chain conveyor line tensioning device according to claim 1 is characterized in that: The adjusting screw is a full-thread screw. Rotating the screw can drive the slider to translate, thereby driving the wheel axle and the double-speed sprocket to translate together. It is used to adjust the tension of the double-speed chain conveyor line. One end of the screw is the head and the other end is connected to the nut.

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