High-precision electronic belt scale

Abstract

The utility model belongs to the technical field of belt weighers, and discloses a high-precision electronic belt weigher, which comprises two side frames, driving rollers are rotatably mounted on one sides of opposite surfaces of the two side frames, and driven rollers are rotatably arranged on two sides of the opposite surfaces of the two side frames; a tensioning degree detection assembly is fixedly installed on the side, close to the driven roller, of each side frame, each tensioning degree detection assembly comprises a downward pressing main body welded between the tops of the two side frames and a tightness adjusting main body fixed in an inner cavity of the corresponding side frame, and cross beam plates are welded to the sides, close to the driven roller, of the opposite faces of the two side frames; a switch is fixedly mounted at the top of the cross beam plate. According to the belt tensioning device, whether the belt is pressed on the switch or not is judged through intermittent descending of the pressing rod and pressing of the belt, if the belt is pressed on the switch, the tensioning degree of the belt is stable, the second electric telescopic rod is controlled to stretch to adjust the tensioning degree of the belt, and the tensioning degree of the belt is guaranteed; and the weighing precision of the belt weigher is prevented from being influenced by the tension degree of the belt.

Description

Technical Field

[0001] The utility model relates to the technical field of belt scales, in particular to a high-precision electronic belt scale. Background Art

[0002] Electronic belt scale is also known as a general term for all belt scales including through-type belt scale, quantitative feeder, DGP hanging belt scale, etc. In general, a belt scale refers to a separate weighing device installed on a long conveyor belt frame. It only consists of a weighing frame, a sensor and an instrument, and has no drive motor or power device. It only weighs and accumulates the materials passing through the conveyor belt, and does not control the size of the material flow. Its advantages are low cost, simple installation, and no need to make major changes to the original equipment. Electronic belt scales are mainly used to transport bulk solid materials and measure materials during the transportation process. Commonly measured and transported materials include raw coal, limestone, clay, iron powder, clinker, etc. Therefore, electronic belt scales play an irreplaceable role in the field of weighing.

[0003] Prior art, such as publication number: CN218895832U discloses a high-precision electronic belt scale, including a conveyor belt, a conveyor roller, a support frame, a weighing sensor, a display screen, a material leveling device and a limit roller, wherein the weighing sensor and the conveyor roller are disposed on the support frame. The present application sets a material leveling device above the conveyor belt, which is conducive to uniform conveyance of materials on the conveyor belt and reduces the possibility of materials falling due to excessive accumulation.

[0004] In summary, the current high-precision electronic belt scales still have the following defects during installation and use on the user side: when the belt scale is in use, the materials to be transported will fall directly onto the belt after being guided. When the materials hit the belt, the impact force will be applied to the belt, causing the belt to deform. Over time, the belt will become loose, and the tension of the belt will change as it relaxes. The tension of the belt also has a great influence on the accuracy of the belt scale. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0006] Specifically, the technical problem to be solved by the utility model is to provide a high-precision electronic belt scale to solve the current technical problem that the belt will become loose after long-term use, the looseness of the belt will cause its tension to change, and the tension of the belt will also have a great impact on the accuracy of the belt scale.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A high-precision electronic belt scale, comprising two side frames, one side of the opposite sides of the two side frames is rotatably provided with a driving roller, and both sides of the opposite sides of the two side frames are rotatably provided with driven rollers, and a belt is installed between the driving roller and the driven roller;

[0009] A tension detection assembly is fixedly installed on one side of the side frame close to the driven roller, and the tension detection assembly includes a downward pressing body welded between the tops of the two side frames, and a tension adjustment body fixed in the inner cavity of the side frame, and the tension adjustment body drives the driven roller to move laterally, and a crossbeam plate is welded on the opposite surfaces of the two side frames and close to the side of the driven roller, and a switch is fixedly installed on the top of the crossbeam plate and directly below the downward pressing end of the tension detection assembly.

[0010] As an improved technical solution, the downward pressure body includes a U-shaped frame welded between the tops of the two side frames, an electric telescopic rod is fixedly installed on the top of the U-shaped frame, a fixed sleeve is fixedly installed on the movable end of the electric telescopic rod, a downward pressure rod is detachably installed in the inner cavity of the fixed sleeve, and a pressure sensor is fixedly installed on the bottom of the downward pressure rod.

[0011] As an improved technical solution, the tension adjustment body includes a movable seat slidably installed in the inner cavity of the side frame, and the axial end of the driven roller is rotatably installed on the movable seat through a bearing, and a sliding cavity is penetrated on the side of the side frame close to the driven roller for the movable seat to pass through.

[0012] As an improved technical solution, an electric telescopic rod 2 is fixedly installed inside the side frame and on one side close to the sliding cavity, and the movable end of the electric telescopic rod 2 is fixedly connected to a connecting block, and the connecting block is welded to the movable seat.

[0013] As an improved technical solution, slide rails are installed inside the side frame and at the upper and lower positions of the slide cavity, and sliders that slide on the slide rails are fixedly installed on the top and bottom of the movable seat.

[0014] As an improved technical solution, a fixing through hole is penetrated at a lower position on one side of the fixing sleeve, a bolt is arranged on the fixing sleeve through the fixing through hole, and two thread grooves connected to the bolt thread are opened from top to bottom at an upper position on one side of the lower pressure rod close to the bolt.

[0015] As an improved technical solution, a T-slot is provided at the top of the lower pressure rod and on a side away from the threaded groove, and a T-shaped guide block matching the T-slot is welded on a side of the inner wall of the fixing sleeve away from the bolt.

[0016] After adopting the above technical solution, the beneficial effects of the utility model are:

[0017] The utility model presses down the belt by intermittently descending the lower pressure rod, and determines whether it will press on the switch by pressing down the belt. If it presses on the switch, the tension of the belt is stable, and controls the extension of the electric telescopic rod to adjust the tension of the belt, so as to ensure the tightness of the belt tension and avoid the weighing accuracy of the belt scale being affected by the tension of the belt; and allows the bolt to pass through the fixed through hole on the fixing sleeve and enter the inside of the thread groove for threaded connection, so that the thread of the lower pressure rod is clamped and fixed inside the fixing sleeve, which is convenient for assembling, disassembling and replacing the lower pressure rod; when installing the lower pressure rod, the T-shaped guide block is allowed to enter the inside of the T-shaped groove, which limits the position of the lower pressure rod entering the inside of the fixing sleeve, ensures that the thread groove is directly opposite to one side of the bolt, and facilitates the bolt to accurately and quickly enter the inside of the thread groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 The utility model is a structural schematic diagram of a high-precision electronic belt scale.

[0020] Figure 2 The utility model is a schematic diagram of the partial inner cavity structure of a high-precision electronic belt scale.

[0021] Figure 3 The utility model is a structural schematic diagram of a pressing body of a high-precision electronic belt scale.

[0022] Figure 4 The utility model is a schematic diagram of the structure of a lower pressure rod of a high-precision electronic belt scale.

[0023] Figure 5 The utility model is a schematic diagram of the internal structure of a fixing sleeve of a high-precision electronic belt scale.

[0024] Figure 6 The utility model is a structural schematic diagram of a tension adjustment body of a high-precision electronic belt scale.

[0025] Description of reference numerals:

[0026] 1. Side frame; 2. Belt; 3. Tension detection assembly; 31. Pressing body; 311. U-shaped frame; 312. Electric telescopic rod 1; 313. Fixed sleeve; 314. Pressing rod; 315. Bolt; 316. T-slot; 317. Threaded groove; 318. T-guide block; 32. Tension adjustment body; 321. Electric telescopic rod 2; 322. Slide rail; 323. Movable seat; 324. Slide cavity; 325. Sliding block; 326. Connecting block; 33. Crossbeam plate; 34. Switch; 4. Driven roller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0030] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] like Figures 1 to 6As shown together, the utility model provides a high-precision electronic belt scale, including two side frames 1, a leg frame is welded between the two sides of the bottom of the two side frames 1, a driving roller is rotatably installed on one side of the opposite surface of the two side frames 1, and the driving end of the driving roller is fixedly connected to the driving end of the servo motor, the servo motor is fixed on the side frame 1, and a driven roller 4 is rotatably arranged on both sides of the opposite surface of the two side frames 1, and a belt 2 is installed between the driving roller and the driven roller 4 for transmission;

[0032] A tension detection assembly 3 is fixedly installed on one side of the side frame 1 close to the driven roller 4. The tension detection assembly 3 includes a downward pressing body 31 welded between the tops of the two side frames 1, and a tension adjustment body 32 fixed in the inner cavity of the side frame 1, and the tension adjustment body 32 drives the driven roller 4 to move laterally. A cross beam 33 is welded on the opposite sides of the two side frames 1 and close to the driven roller 4, and a switch 34 is fixedly installed on the top of the cross beam 33 and directly below the downward pressing end of the tension detection assembly 3.

[0033] According to a high-precision electronic belt scale of an embodiment of the utility model, the belt 2 is pressed down by the intermittent descent of the lower pressure rod 314, and it is judged by pressing down the belt 2 whether it will press on the switch 34. If it presses on the switch 34, the tension of the belt 2 is stable, and the electric telescopic rod 2 321 is controlled to extend to adjust the tension of the belt 2, so as to ensure the tightness of the tension of the belt 2 and avoid the tension of the belt 2 affecting the weighing accuracy of the belt scale.

[0034] like Figure 3 As shown, in this embodiment, the pressing body 31 includes a U-shaped frame 311 welded between the tops of the two side frames 1, and an electric telescopic rod 312 is fixedly installed on the top of the U-shaped frame 311. The movable end of the electric telescopic rod 312 is located in the inner cavity of the U-shaped frame 311, and a fixing sleeve 313 is fixedly installed on the movable end of the electric telescopic rod 312. A pressing rod 314 is detachably installed in the inner cavity of the fixing sleeve 313, and a pressure sensor is fixedly installed on the bottom of the pressing rod 314.

[0035] The extension of the electric telescopic rod 1 312 drives the fixing sleeve 313 and the lower pressing rod 314 thereon to move downward, so that the bottom end of the lower pressing rod 314 is pressed on the upper surface of the belt 2. At this time, the pressure sensor starts to detect the pressure applied by the lower pressing rod 314 to the upper surface of the belt 2. If the pressure reaches a preset threshold, the electric telescopic rod 1 312 stops extending. If the pressure does not reach the threshold, the electric telescopic rod 1 312 continues to extend.

[0036] When the pressure value reaches the threshold value, if the belt 2 is relatively tight, when the pressing rod 314 presses down the belt 2, the belt 2 will only be slightly deformed, and the pressing rod 314 will not press down on the switch 34.

[0037] When the pressure value reaches the threshold, if the belt 2 is relatively loose, the belt 2 will be greatly deformed, and the lower pressure rod 314 presses the belt 2 to move downward and press on the switch 34;

[0038] If the pressure value does not reach the threshold value, but the lower pressure rod 314 presses the belt 2 downward and presses on the switch 34, the electric telescopic rod 321 will be controlled to extend and push the movable seat 323 to move to the side away from the active roller, thereby expanding the distance between the driven roller 4 and the active roller, and adjusting the tension of the belt 2 to make the belt 2 in a straight state.

[0039] like Figure 6 As shown, in this embodiment, the tension adjustment body 32 includes a movable seat 323 slidably installed in the inner cavity of the side frame 1, and the axial end of the driven roller 4 is rotatably installed on the movable seat 323 through a bearing, and a sliding cavity 324 is penetrated on the side of the side frame 1 close to the driven roller 4 for the movable seat 323 to pass through.

[0040] like Figure 6 As shown, in this embodiment, an electric telescopic rod 321 is fixedly installed inside the side frame 1 and on one side close to the sliding cavity 324, and a connecting block 326 is fixedly connected to the movable end of the electric telescopic rod 321, and the connecting block 326 is welded to the movable seat 323.

[0041] like Figure 6 As shown together, in the present embodiment, slide rails 322 are installed inside the side frame 1 and at the upper and lower positions of the slide cavity 324, and sliders 325 sliding on the slide rails 322 are fixedly installed on the top and bottom of the movable seat 323. The slider 325 slides on the slide rails 322 to support and limit the movable seat 323, thereby ensuring the stability of the movable seat 323 when supporting and moving the driven roller 4.

[0042] like Figure 3 , Figure 5 As shown together, in the present embodiment, a fixing through hole is penetrated at a lower position on one side of the fixing sleeve 313, a bolt 315 is provided on the fixing sleeve 313 through the fixing through hole, and two thread grooves 317 threadedly connected with the bolt 315 are provided from top to bottom on the upper position of the lower pressure rod 314 near the side of the bolt 315. The process of fixing the lower pressure rod 314 to the fixing sleeve 313 is as follows: the lower pressure rod 314 is placed into the interior of the fixing sleeve 313, and the bolt 315 is passed through the fixing through hole on the fixing sleeve 313 and then enters the interior of the thread groove 317 for threaded connection, so that the lower pressure rod 314 is threadedly clamped and fixed in the interior of the fixing sleeve 313, which is convenient for assembly, disassembly and replacement of the lower pressure rod 314.

[0043] like Figure 4 , Figure 5As shown together, in the present embodiment, a T-slot 316 is provided at the top of the lower pressure rod 314 and on the side away from the threaded groove 317, and a T-guide block 318 matched with the T-slot 316 is welded on the side of the inner wall surface of the fixing sleeve 313 away from the bolt 315. When the lower pressure rod 314 is installed, the T-guide block 318 enters the interior of the T-slot 316, which limits the position of the lower pressure rod 314 entering the interior of the fixing sleeve 313, ensures that the threaded groove 317 is opposite to the side of the bolt 315, and facilitates the bolt 315 to accurately and quickly enter the interior of the threaded groove 317.

[0044] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A high-precision electronic belt scale, comprising two side frames (1), characterized in that: A driving roller is rotatably mounted on one side of the opposing surfaces of the two side frames (1), and driven rollers (4) are rotatably mounted on both sides of the opposing surfaces of the two side frames (1), and a belt (2) is installed between the driving roller and the driven roller (4); A tension detection assembly (3) is fixedly mounted on one side of the side frame (1) close to the driven roller (4), the tension detection assembly (3) comprising a downward pressing body (31) welded between the tops of the two side frames (1), and a tension adjustment body (32) fixed in the inner cavity of the side frame (1), and the tension adjustment body (32) drives the driven roller (4) to move laterally, a cross beam (33) is welded on one side of the two side frames (1) facing each other and close to the driven roller (4), and a switch (34) is fixedly mounted on the top of the cross beam (33) and directly below the downward pressing end of the tension detection assembly (3).

2. A high-precision electronic belt scale according to claim 1, characterized in that: The pressing body (31) comprises a U-shaped frame (311) welded between the tops of the two side frames (1), an electric telescopic rod (312) is fixedly mounted on the top of the U-shaped frame (311), a fixing sleeve (313) is fixedly mounted on the movable end of the electric telescopic rod (312), a pressing rod (314) is detachably mounted in the inner cavity of the fixing sleeve (313), and a pressure sensor is fixedly mounted on the bottom of the pressing rod (314).

3. A high-precision electronic belt scale according to claim 2, characterized in that: The tension adjustment body (32) comprises a movable seat (323) slidably mounted in the inner cavity of the side frame (1), and the shaft end of the driven roller (4) is rotatably mounted on the movable seat (323) via a bearing, and a sliding cavity (324) is formed through a side of the side frame (1) close to the driven roller (4) for the movable seat (323) to pass through.

4. A high-precision electronic belt scale according to claim 3, characterized in that: A second electric telescopic rod (321) is fixedly installed inside the side frame (1) and on a side close to the sliding cavity (324); a connecting block (326) is fixedly connected to the movable end of the second electric telescopic rod (321); and the connecting block (326) is welded to the movable seat (323).

5. A high-precision electronic belt scale according to claim 4, characterized in that: Slide rails (322) are installed inside the side frame (1) and at the upper and lower positions of the slide cavity (324), and sliders (325) that slide on the slide rails (322) are fixedly installed at the top and bottom of the movable seat (323).

6. A high-precision electronic belt scale according to claim 5, characterized in that: A fixing through hole is formed at a lower position on one side of the fixing sleeve (313), and a bolt (315) is provided on the fixing sleeve (313) through the fixing through hole. Two thread grooves (317) threadably connected to the bolt (315) are formed from top to bottom on the upper position of the lower pressure rod (314) near the bolt (315).

7. A high-precision electronic belt scale according to claim 6, characterized in that: A T-shaped groove (316) is provided at the top of the pressing rod (314) and on a side away from the thread groove (317), and a T-shaped guide block (318) adapted to the T-shaped groove (316) is welded on a side of the inner wall of the fixing sleeve (313) away from the bolt (315).

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