Belt conveyor tensioning device

Abstract

The utility model discloses a belt conveyor tensioning device which comprises a machine tail frame provided with a belt drum. Track support structures arranged on the two sides at intervals are arranged at the bottom of the machine tail frame in a sliding mode, and in the tensioning process, the machine tail frame rolls on the track support structures. The machine tail frame is tensioned through a tensioning mechanism, the tensioning mechanism comprises a tensioning motor, a tensioning wheel is installed on the tensioning motor, and a tensioning rope structure wound on the tensioning wheel is assembled and connected to the machine tail frame; a plurality of spring telescopic structures are installed at the front end of the machine tail frame and installed on a machine frame of the belt conveyor in a sliding mode. And the tail frame of the dragging machine can reset and move after being tensioned and adjusted through a spring telescopic structure. By means of the structure, tensioning of the belt conveyor is achieved in an efficient, labor-saving and convenient-to-operate mode.

Description

Technical Field

[0001] This utility model belongs to the field of belt conveyor tensioning technology, and in particular relates to a belt conveyor tensioning device. Background Technology

[0002] The belt conveyor's main structure includes a frame, several idlers mounted on the frame, a tail frame mounted at the rear of the frame, a drive belt roller mounted on the tail frame, and a driven belt roller mounted at the head of the frame. The drive belt roller and the driven belt roller are driven by a transmission belt.

[0003] As the belt is used over time, the rubber belt gradually loosens. A loose belt is not only prone to misalignment but also cannot maintain stable material transport. Therefore, existing technology uses a tailstock adjustment mechanism to tension the belt. Specifically, this adjustment is achieved via a screw between the tailstock and the frame.

[0004] In actual operation, the tailstock is quite heavy, making adjustments very difficult. Furthermore, the corrosion of metal components, such as the screws, often necessitates cutting off corroded parts during adjustments, further complicating the process.

[0005] Therefore, in actual operation, if the tailstock of the belt conveyor can be adjusted in a convenient and labor-saving manner, and the belt drum, which adjusts accordingly, gradually tensions the belt, it not only greatly improves the operational flexibility of the conveyor but also allows for real-time adjustment based on the tension of the conveyor belt during production, ensuring that the belt conveyor transports materials in optimal condition.

[0006] However, the current adjustment method has the above-mentioned drawbacks, which makes it very troublesome to adjust in actual work, and will greatly affect work efficiency once adjustment is needed. Utility Model Content

[0007] Based on the above background, the purpose of this utility model is to provide a belt conveyor tensioning device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A belt conveyor tensioning device includes a tail frame for mounting belt drums;

[0010] The bottom of the tail frame is slidably provided with a track support structure spaced apart on both sides. During the tensioning process, the tail frame rolls on the track support structure.

[0011] The tail frame is tensioned by a tensioning mechanism, which includes a tensioning motor, a tensioning wheel mounted on the tensioning motor, and a tensioning rope structure wound on the tensioning wheel mounted on the tail frame.

[0012] The front end of the tail frame is equipped with several spring telescopic structures, which are slidably mounted on the frame of the belt conveyor.

[0013] The tailstock can be reset and moved after tension adjustment by using a spring-loaded telescopic structure.

[0014] Preferably, the tail frame includes symmetrically arranged frames on both sides, bearing seats are installed inside the frames, and belt drums are rotatably connected to the bearing seats;

[0015] A top mount is installed on the top of the frame, and the motor of the drive belt drum is mounted on the top mount;

[0016] Rollers are rotatably connected to both sides of the lower end of the frame, and the rollers roll on the track.

[0017] Preferably, the track support structure includes tracks symmetrically arranged on the left and right sides, with a bottom frame fixedly connected between the bottoms of the tracks, and a plurality of support frames fixedly connected to the bottom of the bottom frame.

[0018] Preferably, the tensioning rope structure includes V-shaped rope sections that are fixedly connected to the upper and lower ends of the frame;

[0019] A pull rope is fixedly connected between the V-shaped rope sections, and the pull rope is wound around the tensioning wheel.

[0020] Preferably, a pair of spring telescopic structures spaced vertically apart are installed on the left and right sides of the frame;

[0021] The spring telescopic structure includes an adjusting slide rod that is slidably connected to the frame of the belt conveyor;

[0022] The adjusting slide is fixedly connected to the frame.

[0023] Preferably, a spring is sleeved on the adjusting slide rod, and the two ends of the spring are respectively fixedly connected to the frame and the frame of the belt conveyor.

[0024] Preferably, a positioning structure is installed on the tail frame;

[0025] After the tail frame is tensioned and pulled, it is positioned by the positioning structure.

[0026] Preferably, the positioning structure includes a pair of fixed brackets fixedly connected to the top two sides of the bottom frame base;

[0027] The rear ends of the frame are respectively fixedly connected to sliding positioning screws that are slidably connected to the fixed bracket;

[0028] The sliding positioning screw is threaded with a pair of positioning nuts positioned on both sides of the fixed bracket.

[0029] Preferably, a motor support is installed at the bottom of the tensioning motor.

[0030] This utility model has the following beneficial effects:

[0031] 1. A track support structure with spaced intervals on both sides is slidably installed at the bottom of the tail frame. During tensioning, the tail frame rolls on the track support structure. Specifically, the track support structure includes symmetrically arranged tracks on the left and right sides, with a bottom frame fixedly connected between the bottom of the tracks. Several support frames are fixedly connected to the bottom of the bottom frame. Rollers are rotatably connected to the lower ends of the frames, and these rollers roll on the tracks. During tensioning, the lower end of the tail frame rolls on the tracks via the rollers, thereby moving the tail frame for tensioning.

[0032] 2. The tensioning rope structure includes V-shaped rope sections fixedly connected to the upper and lower ends of the frame; a pull rope is fixedly connected between the V-shaped rope sections, and the pull rope is wound around the tensioning wheel. During operation, due to the aforementioned tensioning rope structure, as the tensioning wheel winds, the upper and lower V-shaped rope sections apply a uniform dragging force from the upper and lower ends of the frame, as well as from the left and right sides of the upper and lower ends. Under the action of this tensioning rope structure, the tail frame can maintain uniform force, thus enabling the tail frame to be dragged and moved in a stable and flexible manner, and the tension belt is then tensioned after movement.

[0033] 3. After tensioning and pulling the tail frame, the tail frame is positioned using a positioning structure. The positioning structure includes a pair of fixed brackets fixedly connected to the top sides of the bottom frame; sliding positioning screws, slidably connected to the fixed brackets, are fixedly connected to the rear ends of the frame; a pair of positioning nuts, positioned on both sides of the fixed brackets, are threaded onto the sliding positioning screws. Before dragging, the inner positioning nuts are moved forward (and the rear positioning nuts are moved backward), allowing sufficient sliding length for the sliding positioning screws. Once dragged to the designated position, the positioning nuts on both sides are locked and positioned on the fixed brackets. Positioning ensures stable operation of the conveyor belt. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0036] Figure 2 This is a schematic diagram of the tension rope structure in an embodiment of the present invention;

[0037] Figure 3 This is an embodiment of the present utility model. Figure 1 Top view in the middle;

[0038] Figure 4 This is a schematic diagram of the structure of the roller rolling on the track in an embodiment of this utility model.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0043] Example 1

[0044] like Figure 1-4As shown, a belt conveyor tensioning device includes a tail frame 3 for mounting belt drums. Specifically, the tail frame 3 includes symmetrically arranged frames 31 (metal frames 31 in the shape of an octagon) on the left and right sides, and bearing seats 33 are installed inside the frames 31. The belt drums (rotating shafts at both ends) are rotatably connected to the bearing seats 33.

[0045] Meanwhile, a top seat 32 is installed on the top of the frame 31, and the motor of the transmission belt drum 4 is installed on the top seat 32 (similar to the existing belt conveyor, the driven pulley is installed on the belt drum 4, the driving pulley is installed on the motor, and the transmission belt passes through the opening in the top seat 32).

[0046] This method allows for synchronous adjustment of the motor and belt drum 4 during the adjustment process. Its advantage is that the tail frame 3 can be adjusted to tension the belt without stopping the machine.

[0047] To reduce adjustment resistance, the bottom of the tail frame 3 is slidably provided with a track support structure spaced apart on both sides. During tensioning, the tail frame 3 rolls on the track support structure 6. Specifically, the track support structure 6 includes tracks 62 symmetrically arranged on the left and right sides, with a bottom frame 61 fixedly connected between the bottoms of the tracks 62, and several support frames fixedly connected to the bottom of the bottom frame 61.

[0048] Specifically, rollers 34 are rotatably connected to both sides of the lower end of the frame 31, and the rollers 34 roll on the track 62.

[0049] During the tensioning process, the lower end of the tail frame 3 rolls on the track 62 via rollers 34, thereby moving the tail frame 3 for tensioning.

[0050] The tail frame 3 is tensioned by a tensioning mechanism 5, which includes a tensioning motor 54 (in the conventional way, a motor support is installed at the bottom of the tensioning motor, and the tensioning motor is fixed to a workbench by the motor support). A tensioning wheel 541 is installed on the tensioning motor 54, and a tensioning rope structure wound on the tensioning wheel 541 is assembled and connected on the tail frame 3.

[0051] Specifically, in order to increase the stability of the tractor tail frame 3 during movement, the tensioning rope structure includes V-shaped rope sections (upper V-shaped rope section 51 and lower V-shaped rope section 52) fixedly connected to the upper and lower ends of the frame 31 respectively; a pulling rope 53 is fixedly connected between the upper V-shaped rope section 51 and the lower V-shaped rope section 52, and the pulling rope 53 is wound on the tensioning wheel 541.

[0052] During operation, due to the use of the tensioning rope structure described above, when the tensioning wheel 541 is winding, the upper V-shaped rope part 51 and the lower V-shaped rope part 52 apply a uniform dragging force from the upper and lower ends of the frame 31 as well as from the left and right sides of the upper and lower ends. Under the action of the tensioning rope structure, the tail frame 3 can be kept under uniform force, and thus the tail frame 3 can be dragged and moved in a stable and flexible manner, and the tensioning belt is tightened after the movement.

[0053] Example 2

[0054] like Figure 1-4 As shown, in this embodiment, based on the structure of embodiment 1, in order to facilitate the movement of the tail frame 3 in the reset direction after it is tensioned by dragging, if the tension is excessive, the tail frame 3 needs to be loosened. Therefore, several spring telescopic structures 2 are installed at the front end of the tail frame 3. The spring telescopic structures 2 are slidably installed on the frame of the belt conveyor.

[0055] Specifically, a pair of spring telescopic structures 2, spaced vertically apart, are installed on the left and right sides of the frame 31. The spring telescopic structure 2 includes an adjusting slide rod 21 slidably connected to the frame of the belt conveyor. The adjusting slide rod 21 is fixedly connected to the frame 31. At the same time, a spring 22 is sleeved on the adjusting slide rod 21, and the two ends of the spring 22 are fixedly connected to the frame of the belt conveyor and the frame 31, respectively.

[0056] Specifically, during the dragging process, the adjusting slide bar 21 slides relative to the frame. During the sliding process, the spring (using a reinforced spring) is stretched. Once the tension wheel 541 rotates in the opposite direction to release the tension rope structure, the tail frame 3 is reset and moved under the elastic restoring force of the spring.

[0057] Example 3

[0058] like Figure 1-4 As shown, in this embodiment, based on the structure of embodiment 2, a positioning structure 7 is installed on the tailstock 3. When the tailstock 3 is adjusted, it is positioned by the positioning structure 7, thereby maintaining the stability of the belt tension.

[0059] Specifically, after tensioning and pulling the tail frame 3, the tail frame 3 is positioned by the positioning structure 7. The positioning structure 7 includes a pair of fixed brackets 71 fixedly connected to the top two sides of the bottom frame 61; sliding positioning screws 72 slidably connected to the fixed brackets 71 are fixedly connected to the rear ends of the frame 31; and a pair of positioning nuts 73 are threadedly connected to the sliding positioning screws 72 and positioned on both sides of the fixed brackets.

[0060] Before dragging, first move the inner positioning nut 73 forward (move the rear positioning nut 73 backward) to allow sufficient sliding length for the sliding positioning screw 72. After dragging to the designated position, lock the positioning nuts 73 on both the front and rear sides to the sides of the fixed bracket.

[0061] The tensioning motor 54 is equipped with a motor support at its bottom.

[0062] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A belt conveyor tensioning device, characterized in that, The machine tail frame includes a belt cylinder installation; The bottom of the machine tail frame is slidably provided with a track support structure arranged on both sides, and the machine tail frame rolls on the track support structure during tensioning; The machine tail frame is tensioned by a tensioning mechanism, which includes a tensioning motor, a tensioning wheel mounted on the tensioning motor, and a tensioning rope structure wound on the tensioning wheel assembled on the machine tail frame; The front end of the machine tail frame is provided with a plurality of spring extension structures, which are slidably installed on the rack of the belt conveyor; The machine tail frame can be reset after being dragged by the spring extension structure for tensioning adjustment.

2. Belt conveyor tensioning device according to claim 1, characterized in that The machine tail frame includes two symmetrically arranged frames, a bearing seat is installed in the frame, and the belt cylinder is rotatably connected to the bearing seat; The top of the frame is provided with a top seat, and the motor driving the belt cylinder is installed on the top seat; The lower end of the frame is rotatably connected with a roller on both sides, and the roller rolls on the track.

3. The belt tensioner of claim 2, wherein The track support structure includes two symmetrically arranged tracks, a bottom frame is fixedly connected between the bottoms of the tracks, and a plurality of support frames are fixedly connected to the bottom of the bottom frame.

4. The belt tensioner of claim 2, wherein The tensioning rope structure includes V-shaped rope portions fixedly connected to the upper and lower ends of the frame, respectively; The V-shaped rope portions are fixedly connected with a pulling rope, and the pulling rope is wound on the tensioning wheel.

5. The belt tensioner of claim 2, wherein The frame is respectively provided with a pair of spring extension structures arranged in an upper and lower interval on both sides; The spring extension structure includes an adjusting slide rod slidably connected to the rack of the belt conveyor; The adjusting slide rod is fixedly connected to the frame.

6. The belt tensioner of claim 5, wherein A spring is sleeved on the adjusting slide rod, and the both ends of the spring are fixedly connected to the rack of the belt conveyor and the frame, respectively.

7. The belt tensioner of claim 3, wherein The machine tail frame is provided with a positioning structure; The machine tail frame is positioned by the positioning structure after being tensioned and pulled.

8. A belt tensioner as claimed in claim 7, characterised in that The positioning structure includes a pair of fixed supports fixedly connected to the top of the bottom frame on both sides; The rear ends of the frame are respectively fixedly connected with slide positioning screws slidably connected to the fixed supports; The slide positioning screws are threadedly connected with a pair of positioning nuts positioned on both sides of the fixed supports.

9. The belt tensioner of claim 1, wherein, The bottom of the tensioning motor is provided with a motor support.

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