Double-pressure mahjong machine tensioning wheel structure capable of preventing deviation of conveying belt

Abstract

The utility model discloses a double-pressure mahjong machine tensioning wheel structure capable of preventing a conveying belt from deviating. The double-pressure mahjong machine tensioning wheel structure comprises an installation shell and a tensioning structure. The mounting shell comprises a mounting frame, two torsional spring limiting columns and two arc-shaped sliding grooves. The mounting frame is in a U shape and comprises two supporting plates which are symmetrically arranged. The two arc-shaped sliding grooves are in a circular arc shape, and the two arc-shaped sliding grooves are formed in the supporting plate and correspond to each other in position. The two torsion spring limiting columns are arranged on the supporting plate and correspond to each other in position. The tensioning structure slides in the arc-shaped sliding groove in a reciprocating mode so that the conveying belt can be tensioned. The device is reasonable in structural design, the problem that the belt of the mahjong machine is prone to deviation and abrasion is effectively solved, and meanwhile the device is simple in structure, few in component and convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of mahjong machines, in particular to a tensioning wheel structure of a mahjong machine with double pressure to prevent conveyor belt deviation. Background Art

[0002] Mahjong machine is a machine used to automatically sort, stack and upgrade cards, usually used in mahjong games. It can save time, reduce manual sorting, stacking and placement operations, and ensure the fairness of the game process.

[0003] However, in the prior art, the conveyor belt tensioning guide structure inside the mahjong machine for transferring mahjong pieces is tightened by a single-side lever relying on a tension spring. The belt is easily deviated due to the large influence of parts and assembly errors, which increases the belt wear and causes the mahjong machine to fail to work properly.

[0004] Therefore, a double-pressure tensioning wheel structure for a mahjong machine to prevent conveyor belt deviation is provided to solve the above problems. Utility Model Content

[0005] The utility model provides a double-pressure tensioning wheel structure for preventing conveyor belt from deviating, aiming to solve the problems in the prior art that a single-side lever is tightened by a tension spring, parts and assembly errors are large, and the belt is prone to deviation and wear.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-pressure tensioning wheel structure for a mahjong machine to prevent conveyor belt deviation comprises a mounting shell and a tensioning structure; the mounting shell comprises a mounting frame, two torsion spring limiting columns and two arcuate slide grooves; the mounting frame is U-shaped and comprises two symmetrically arranged support plates; the two arcuate slide grooves are arc-shaped, and the two arcuate slide grooves are respectively arranged on the support plates and in corresponding positions; the two torsion spring limiting columns are respectively arranged on the support plates and in corresponding positions; the tensioning structure reciprocates in the arcuate slide groove to tension the conveyor belt.

[0008] Preferably, the tensioning structure includes a limit torsion spring, a rolling shaft and a tensioning wheel; the limit torsion spring is composed of a pressure-bearing end, a torsion spring wire, a torsion ring and a reaction force folded edge in sequence; the pressure-bearing end on the limit torsion spring abuts against the rolling shaft, and the tensioning wheel is sleeved on the rolling shaft.

[0009] Preferably, a fixed plate is provided between the two symmetrically arranged support plates, the torsion ring is installed on the two torsion spring limit columns, the reaction force folded edge is a folded edge facing one direction arranged in the middle of the two torsion rings, the folded edge is in a U-shape and abuts against the fixed plate, the pressure-bearing end abuts against the rolling shaft, and the angle between the pressure-bearing end and the torsion spring steel wire is a preset angle.

[0010] Preferably, the preset angle is 135 degrees.

[0011] Preferably, each end of the rolling shaft has a sliding section for cooperating with the arc-shaped slide groove on the mounting frame, and a limiting groove is provided on the inner side of the sliding section; the two pressure-bearing end heads correspond one-to-one to the two limiting grooves; the two pressure-bearing end heads are respectively and correspondingly clamped in the limiting grooves.

[0012] Preferably, the two pressure-bearing end heads are single-strand torsion spring steel wires and the heads are slightly bent symmetrically inwards.

[0013] Preferably, the tensioner wheel comprises a central axis and two wide sides; the two wide sides are symmetrically arranged at two ends of the central axis and vertically connected to the central axis, and a through hole is arranged at the axis center of the central axis.

[0014] Preferably, the rolling shaft is inserted into the through hole, and the tensioning wheel moves along the arc-shaped sliding groove driven by the rolling shaft.

[0015] A mahjong machine comprises a mahjong machine tensioning wheel structure with double pressure to prevent conveyor belt from running off track.

[0016] In the utility model, the mounting shell includes a mounting frame, on which a torsion spring limiting column, a fixing plate and an arc-shaped slide groove are provided; the tension wheel structure includes a torsion spring torsion ring installed on the torsion spring limiting column, a rolling shaft connected to the arc-shaped slide groove and a tension wheel connected to the rolling shaft, the fixing plate is located between the two side walls of the mounting frame, the arc-shaped slide groove is located on the two side walls of the mounting frame, the torsion spring is respectively abutted against the fixing plate and the rolling shaft, and the rolling shaft is slidably connected to the arc-shaped slide groove. The utility model uses a torsion spring arranged on two torsion spring limit columns on the mounting frame, and the reaction force folded edge is in a U-shaped contact with the fixing plate, the pressure-bearing end is a single-strand torsion spring steel wire, and the head is symmetrically slightly bent inward to prevent scratching with the mounting frame fixing plate, the pressure-bearing end of the limiting torsion spring is a single-strand torsion spring steel wire, which can be inserted into the limiting groove to reversely tighten the rolling shaft and the tensioning wheel without affecting the circular movement of the rolling shaft and the tensioning wheel with the conveyor belt, and can also limit the lateral displacement between the tensioning wheel and the rolling shaft and the mounting frame, compared with the traditional tension spring, the torsion spring has torsional force on both sides, so that the tensioning wheel can quickly tighten the conveyor belt, the tensioning force of the conveyor belt is large, so that it is not easy to deviate during operation, the torsion spring is also more fatigue-resistant than the tension spring, and is not easy to malfunction, and at the same time, the device has fewer components than the traditional tensioning wheel structure components and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a tensioning wheel structure of a mahjong machine for preventing conveyor belt deviation with double pressure proposed by the utility model;

[0018] Figure 2This is a schematic diagram of the structure of the mounting frame proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the tensioner wheel proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the torsion spring proposed by the utility model;

[0021] Figure 5 This is a schematic structural diagram of the rolling shaft proposed by the utility model.

[0022] In the figure: 1, mounting frame; 11, torsion spring limiting column; 12, fixing plate; 13, arc-shaped slide groove; 2, limiting torsion spring; 21, reaction force folding edge; 22, torsion spring steel wire; 23, pressure-bearing end; 3, rolling shaft; 31, limiting groove; 4, tensioning wheel; 41, wide side; 42, through hole. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0025] Reference Figure 1-5 An embodiment of the utility model provides a double-pressure tensioning wheel structure for a mahjong machine to prevent the conveyor belt from deviating, comprising a mounting shell and a tensioning structure; the mounting shell comprises a mounting frame 1, two torsion spring limiting columns 11 and two arc-shaped slide grooves 13; the mounting frame 1 is U-shaped, comprising two symmetrically arranged support plates; the two arc-shaped slide grooves 13 are arc-shaped, and the two arc-shaped slide grooves 13 are respectively arranged on the support plates, and their positions correspond; the two torsion spring limiting columns 11 are respectively arranged on the support plates, and their positions correspond; the tensioning structure reciprocates in the arc-shaped slide grooves 13 to tighten the conveyor belt.

[0026] It can be understood that the tensioning wheel 4 is used to tighten the conveyor belt to prevent it from running off the track. The tensioning wheel 4 is installed on the mounting frame 1 through the rolling shaft 3, so that the tensioning wheel 4 can move along the arc groove 13 on the mounting frame 1 through the rolling shaft 3. When the tensioning wheel 4 tightens the tensioning conveyor belt, the tensioning wheel 4 will be displaced along the arc groove 13 under the action of the tensioning conveyor belt; the limiting torsion spring 2 is installed on the torsion spring limiting column 11 on the mounting frame 1, and the reaction force folded edge 21 on the limiting torsion spring 2 abuts against the fixed plate 12 on the mounting frame 1, and the pressure-bearing end 23 on the torsion spring steel wire 22 on the limiting torsion spring 2 abuts against the torsion spring groove 31 on the rolling shaft 3, so that the tensioning wheel 4 can reset the tensioning wheel 4 under the action of the tensioning conveyor belt.

[0027] In one embodiment, the tensioning structure includes a limiting torsion spring 2, a rolling shaft 3 and a tensioning wheel 4; the limiting torsion spring 2 is composed of a pressure-bearing end 23, a torsion spring steel wire 22, a torsion ring, and a reaction force folded edge 21 in sequence; the pressure-bearing end 23 on the limiting torsion spring 2 abuts against the rolling shaft 3, the tensioning wheel 4 is sleeved on the rolling shaft 3, a fixed plate 12 is provided between the two symmetrically arranged support plates, the torsion ring is installed on the two torsion spring limiting columns 11, the pressure-bearing end 23 is a reaction force folded edge 21 facing one direction arranged between the two torsion rings, the reaction force folded edge 21 is in a U-shaped abutment on the fixed plate 12, the pressure-bearing end 23 abuts against the rolling shaft 3, and the angle between the pressure-bearing end 23 and the torsion spring steel wire 22 is a preset angle.

[0028] It can be understood that by arranging the torsion springs on the two torsion spring limit columns 11 on the mounting frame 1, the reaction force fold 21 is in a U-shaped contact with the fixed plate 12, and the pressure-bearing end 23 is a single-strand torsion spring steel wire 22 and the head is symmetrically slightly bent inward to prevent scratching with the fixed plate 12 of the mounting frame 1. The pressure-bearing end 23 of the limiting torsion spring 2 is a single-strand torsion spring steel wire 22, which can reversely tighten the rolling shaft 3 and the tensioning wheel 4 by inserting into the limiting groove 31 without affecting the circular movement of the rolling shaft 3 and the tensioning wheel 4 with the conveyor belt, and can also limit the lateral displacement between the tensioning wheel 4 and the rolling shaft 3 and the mounting frame 1. Compared with the traditional tension spring, the limiting torsion spring 2 has torque on both sides, which makes it difficult for the transmission belt to deviate during operation.

[0029] In one embodiment, the preset angle is 135 degrees. It is understandable that the tensioning wheel 4 can be pushed to the highest position when not in use to increase the tensioning force of the tensioning wheel mechanism.

[0030] In one embodiment, each end of the rolling shaft 3 has a sliding section for cooperating with the arc-shaped slide groove 13 on the mounting frame 1, and the inner side of the sliding section is provided with a torsion spring limiting groove 31; the two pressure-bearing end heads 23 correspond to the two limiting grooves 31 one by one; and the two pressure-bearing end heads 23 are respectively correspondingly clamped in the limiting grooves 31. It can be understood that the pressure-bearing end heads 23 on the limiting torsion spring 2 are more conveniently installed in the limiting groove 31, and the pressure-bearing end heads 23 are prevented from sliding when the limiting torsion spring 2 is reset. The limiting grooves 31 are provided at both ends of the rolling shaft 3, so that the tensioning wheel 4 is more stable when resetting in the arc-shaped slide groove 13. The limiting grooves 31 provided at both ends of the rolling shaft 3 make the rolling shaft 3 evenly stressed when performing the pressing and resetting movement, so that the tensioning wheel 4 is more stable when moving, and the tensioning wheel mechanism is not easy to deviate when tightening the conveyor belt.

[0031] In one embodiment, the two pressure-bearing end heads 23 are single-strand torsion spring steel wires and the heads are slightly bent symmetrically toward the inside. It can be understood that the pressure-bearing end heads 23 are prevented from scratching the support plate of the mounting frame 1.

[0032] In one embodiment, the tension wheel 4 includes a central axis and two wide sides 41; the two wide sides 41 are symmetrically arranged at both ends of the central axis and vertically connected to the central axis, and a through hole 42 is arranged at the axis of the central axis. It can be understood that the wide sides 41 can prevent the tension wheel mechanism from deviating on the tension wheel 4 when tightening the conveyor belt, and the rolling shaft 3 passes through the through hole 42 to drive the tension wheel 4 to move in the arc-shaped slide groove 13.

[0033] In one embodiment, the rolling shaft 3 is inserted into the through hole 42, and the tensioner 4 moves along the arc-shaped slide groove 13 driven by the rolling shaft 3. It can be understood that the tensioner 4 moves along the arc-shaped slide groove 13 through the rolling shaft 3, so that the tensioner 4 can smoothly press down and reset the conveyor belt when tightening the conveyor belt, so that the conveyor belt will not deviate when moving.

[0034] An embodiment of the utility model further provides a mahjong machine, the mahjong machine comprising the mahjong machine tensioning wheel structure for preventing the conveyor belt from deviating due to double pressure.

[0035] In the mahjong machine of the utility model, a mahjong machine tensioning wheel structure for preventing conveyor belt from deviating with double pressure is provided. When assembled and installed, the torsion rings of the limiting torsion spring 2 are respectively inserted into the torsion spring limiting column 11 on the inner side of the support plate of the mounting frame 1, and the rolling shaft 3 is inserted into the tensioning wheel 5 to obliquely insert the sliding end of one end of the rolling shaft 3 into the arc-shaped slide groove 13 of the mounting frame 1 and then snap into the sliding end of the other end. When snapping in, the limiting groove 31 of the rolling shaft 3 is used to press against the pressure-bearing end of the torsion spring, and the two ends of the steel wire are also pressed against and snapped in successively. When these combinations are completed, the torsion spring reversely tensions the rolling shaft 3 and the tensioning wheel 4, and the torsion spring steel wire 22 is also limited to the left and right positions, so that the function of the tensioning component is realized. Generally, the buckle method is adopted to install and fix it to the corresponding position of the conveying assembly. The structure is simple and stable, the adaptability is wide, the conveyor belt does not deviate, and the torsion spring is also more fatigue-resistant than the tension spring, and is not easy to fail. At the same time, the device has fewer components than the traditional tensioning wheel structure and is convenient to install.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-pressure tensioner structure for preventing conveyor belt deviation in a mahjong machine, characterized in that: Including a mounting shell and a tensioning structure; The mounting shell includes a mounting frame, two torsion spring limiting columns and two arc-shaped slide grooves; the mounting frame is U-shaped and includes two symmetrically arranged support plates; the two arc-shaped slide grooves are arc-shaped, and the two arc-shaped slide grooves are respectively arranged on the support plates and in corresponding positions; the two torsion spring limiting columns are respectively arranged on the support plates and in corresponding positions; The tensioning structure slides back and forth in the arc-shaped slide groove to tension the conveyor belt.

2. A double-pressure tensioning wheel structure for preventing conveyor belt deviation in a mahjong machine according to claim 1, characterized in that: The tensioning structure includes a limit torsion spring, a rolling shaft and a tensioning wheel; the limit torsion spring is composed of a pressure-bearing end, a torsion spring wire, a torsion ring and a reaction force folded edge in sequence; the pressure-bearing end on the limit torsion spring abuts against the rolling shaft, and the tensioning wheel is sleeved on the rolling shaft.

3. A double-pressure tensioning wheel structure for preventing conveyor belt deviation in a mahjong machine according to claim 2, characterized in that: A fixed plate is provided between the two symmetrically arranged support plates, the torsion ring is installed on the two torsion spring limit columns, the pressure-bearing end is a reaction force folded edge facing in one direction arranged between the two torsion rings, the reaction force folded edge is in a U-shape and abuts against the fixed plate, the pressure-bearing end abuts against the rolling shaft, and the angle between the pressure-bearing end and the torsion spring steel wire is a preset angle.

4. A double-pressure tensioning wheel structure for preventing conveyor belt deviation in a mahjong machine according to claim 3, characterized in that: The preset angle is 135 degrees.

5. The double-pressure tensioning wheel structure for preventing conveyor belt deviation of a mahjong machine according to claim 3 is characterized by: Each end of the rolling shaft has a sliding section for cooperating with the arc-shaped slide groove on the mounting frame, and a limiting groove is provided on the inner side of the sliding section; the two pressure-bearing end heads correspond one-to-one to the two limiting grooves; the two pressure-bearing end heads are respectively and correspondingly clamped in the limiting grooves.

6. A double-pressure tensioning wheel structure for preventing conveyor belt deviation in a mahjong machine according to claim 5, characterized in that: The two pressure-bearing end heads are single-strand torsion spring steel wires, and the heads are slightly bent symmetrically toward the inside.

7. A double-pressure tensioning wheel structure for preventing conveyor belt deviation in a mahjong machine according to claim 2, characterized in that: The tensioner wheel comprises a central axis and two wide sides; the two wide sides are symmetrically arranged at two ends of the central axis and vertically connected to the central axis, and a through hole is arranged at the axis center of the central axis.

8. The double-pressure tensioning wheel structure for preventing conveyor belt deviation of a mahjong machine according to claim 7, characterized in that: The rolling shaft is inserted into the through hole, and the tensioning wheel moves along the arc-shaped sliding groove driven by the rolling shaft.

9. A mahjong machine, characterized in that: The mahjong machine includes the mahjong machine tensioning wheel structure for preventing the conveyor belt from deviating with double pressure as described in any one of claims 1 to 8.

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