Hydraulic tensioning device for motor transmission belt

Abstract

The utility model belongs to the technical field of crushers, and particularly relates to a hydraulic tensioning device for a motor transmission belt, which comprises a base and a motor, a swing arm is arranged on the base, the motor is arranged on the swing arm, one end of the swing arm is hinged with the base, the other end of the swing arm is rotatably provided with a hydraulic adjusting rod, and the hydraulic adjusting rod is arranged on the base. The side, away from the swing arm, of the hydraulic adjusting rod is hinged to the base. The swing arm and the hydraulic adjusting rod form a stable triangular structure through three hinge points so as to provide support for the motor. The hydraulic adjusting rod is started, so that the length of one side of the stable triangular structure is changed, then the position of the motor installed on the upper portion is changed accordingly, and finally the conveying belt is tightened so as to improve the transmission efficiency. The tightness of the conveyor belt is adjusted by directly changing the distance between the output shaft of the motor and the input shaft of the crusher, so that the conveyor belt can be more tightly matched on the cambered surface of the shaft body, and the sliding caused by the matching gap is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of crushers, and in particular relates to a hydraulic tensioning device for a motor transmission belt. Background Art

[0002] Crusher is a crushing machine used in the processing of metal and non-metal ores, which can crush the mined raw ore into small particles by squeezing and bending. Among them, cone crusher is suitable for medium or fine crushing. The uniformity of the discharge particle size of medium and fine crushing is generally higher than that of coarse crushing. Therefore, a parallel zone must be set at the bottom of the crushing chamber, and the rotation speed of the crushing cone must be increased so that the material is squeezed more than once in the parallel zone.

[0003] A double-layer crusher disclosed in patent CN204640600U includes a crushing device, the crushing device includes a crushing kettle and a driving source, the driving source is provided with a crushing motor, a first driving wheel and a first passive wheel, the crushing kettle is provided with a material channel, the crushing kettle is also provided with a first crushing wheel and a second crushing wheel, the first crushing wheel is connected to a first crushing shaft that passes through the material channel, the first crushing shaft is provided with a first rotary cutter, the second crushing wheel is connected to a second crushing shaft that passes through the material channel, the second crushing shaft is provided with a second rotary cutter, and a filter is further provided under the second rotary cutter; therefore, the utility model has a simple structure, occupies a small area, can be applied to different occasions, and the double-layer rotary cutter used has a better effect, sufficient crushing and higher efficiency.

[0004] In the above scheme, the driving wheel and the driven wheel transmit power through the conveyor belt, and a tensioning wheel is added between the two wheels to squeeze the middle section of the conveyor belt to achieve the purpose of tensioning the conveyor belt. However, driving the crusher requires a large torque. The contact surfaces of the conveyor belt and the driving and driven wheels are matched with concave and convex teeth, and the squeezing of the tensioning wheel only increases the pressure of the same side conveyor belt and the wheel intersection point, and more arc-shaped fitting surfaces of the conveyor belt and the driving and driven wheels cannot be effectively pressurized. Utility Model Content

[0005] The purpose of the utility model is to provide a motor transmission belt hydraulic tensioning device which can solve the above technical problems.

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

[0007] A motor drive belt hydraulic tensioning device comprises a base and a motor, wherein a swing arm is arranged on the base, the motor is arranged on the swing arm, one end of the swing arm is hinged to the base, and a hydraulic adjustment rod is rotatably arranged on the other end of the swing arm, and the side of the hydraulic adjustment rod away from the swing arm is hinged to the base.

[0008] In the motor drive belt hydraulic tensioning device, the swing arm includes a long arm section and a short arm section that are connected to each other. The end of the long arm section is connected to a hinge seat arranged on a base, and the end of the short arm section is rotatably connected to the hydraulic adjustment rod.

[0009] In the motor drive belt hydraulic tensioning device, a rotating shaft groove is provided at the end of the short arm section, a rotating shaft is arranged in the rotating shaft groove, and the rotating shaft is radially inserted into the end of the hydraulic adjustment rod.

[0010] In the motor drive belt hydraulic tensioning device, a rotation abutment surface is provided at the end of the hydraulic adjustment rod, and the rotation abutment surface is in sliding contact with the side wall of the rotating shaft groove.

[0011] In the motor drive belt hydraulic tensioning device, a support hole is formed at one end of the hydraulic adjustment rod away from the swing arm, and the support hole is parallel to the rotating shaft.

[0012] In the motor drive belt hydraulic tensioning device, an articulated seat is provided on the base, and a connecting shaft in the articulated seat is clearance-matched with the supporting hole.

[0013] In the motor drive belt hydraulic tensioning device, a mounting platform is provided on the upper side of the long arm section, the motor is provided on the mounting platform, and one side edge of the mounting platform abuts against the short arm section.

[0014] In the motor drive belt hydraulic tensioning device, a protective shell is provided on the base, a waist-shaped through hole is opened on the protective shell, and the output end of the motor extends into the protective shell from the waist-shaped through hole.

[0015] In the motor drive belt hydraulic tensioning device, the waist-shaped through hole is arranged along the axial direction of the hydraulic adjustment rod.

[0016] The advantages of the utility model are:

[0017] The swing arm and the hydraulic adjustment rod are connected at three hinge points to form a stable triangle structure to provide support for the motor. The hydraulic adjustment rod is activated to change the length of one side of the stable triangle structure, and the motor installed above also changes its position, which eventually tightens the conveyor belt to improve transmission efficiency. By directly changing the distance between the motor output shaft and the crusher input shaft to adjust the tightness of the conveyor belt, the conveyor belt can be more closely fitted on the curved surface of the shaft, reducing the slippage caused by the gap between the fits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a front view of the utility model.

[0020] Figure 3 It is a top view of the utility model.

[0021] In the figure, there are a base 1, an articulated seat 11, a motor 2, a swing arm 3, a hydraulic adjustment rod 31, a rotating abutment surface 32, a rotating shaft groove 33, a rotating shaft 34, a mounting platform 36, and a protective shell 4. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments.

[0023] like Figure 1-Figure 3 As shown, the motor drive belt hydraulic tensioning device includes a base 1 and a motor 2. A swing arm 3 is arranged on the base 1, and the motor is arranged on the swing arm 3. One end of the swing arm 3 is hinged to the base 1, and a hydraulic adjustment rod 31 is rotatably arranged on the other end of the swing arm 3. The side of the hydraulic adjustment rod 31 away from the swing arm 3 is hinged to the base 1.

[0024] That is, the swing arm and the hydraulic adjustment rod use three hinge points to form a stable triangular structure to provide support for the motor. Activating the hydraulic adjustment rod changes the length of one side of the stable triangular structure, and the motor installed above also changes its position, which ultimately tightens the conveyor belt to improve transmission efficiency. By directly changing the distance between the motor output shaft and the crusher input shaft to adjust the tightness of the conveyor belt, the conveyor belt can be more closely fitted on the curved surface of the shaft, reducing the slippage caused by the gap between the fit.

[0025] In this embodiment, the swing arm 3 includes a long arm section and a short arm section connected by two boxes. The end of the long arm section is connected to a hinge seat arranged on the base 1, and the end of the short arm section is rotatably connected to the hydraulic adjustment rod 31.

[0026] One end of the swing arm 3 is hinged and fixed while the other end can swing circumferentially to form a labor-saving lever. The short arm section supports the motor 1 while the long arm section is supported by the hydraulic adjustment rod 31, so that the adjustment mechanism can lift the motor 1 more easily.

[0027] In this embodiment, a rotating shaft groove 33 is formed at the end of the short arm section, a rotating shaft 34 is disposed in the rotating shaft groove 33 , and the rotating shaft 34 is radially inserted into the end of the hydraulic adjustment rod 31 .

[0028] In this embodiment, a rotation abutment surface 32 is provided at the end of the hydraulic adjustment rod 31 , and the rotation abutment surface 32 is in sliding contact with the side wall of the rotation shaft groove 33 .

[0029] The cooperation between the rotation abutment surface 32 and the side wall of the shaft groove 33 can limit the movement of the swing arm 3 except for the rotation around the shaft 34, ensuring that the end of the swing arm 3 will not slide axially in the shaft 34 to affect the overall stability.

[0030] In this embodiment, a support hole is formed at one end of the hydraulic adjustment rod 31 away from the swing arm 3 , and the support hole is parallel to the rotating shaft 34 .

[0031] The opening direction of the support hole is consistent with the rotation axis 34 so that the swing arm 3 can stand upright on the base 1.

[0032] Preferably, a hinge seat 11 is provided on the base 1, and a connecting shaft in the hinge seat 11 is clearance-matched with the supporting hole.

[0033] The higher the matching accuracy between the connecting shaft and the supporting hole, the more stable the support of the swing arm 3 to the motor 1 will be.

[0034] In this embodiment, a mounting platform 36 is provided on the upper side of the long arm section, the motor 2 is provided on the mounting platform 36, and one side edge of the mounting platform 36 abuts against the short arm section.

[0035] A certain angle is set at the connection between the long arm section and the short arm section, so that the long arm section and the short arm section can support the mounting platform 36 from different angles, thereby ensuring the stable placement of the motor 1.

[0036] In this embodiment, a protective shell 4 is disposed on the base 1 , a waist-shaped through hole is formed on the protective shell 4 , and the output end of the motor 2 extends into the protective shell 4 through the waist-shaped through hole.

[0037] A protective shell 4 is specially provided to cover the output end of the motor 1, the input end of the crusher and the conveyor belt to prevent foreign objects from entering and causing harm.

[0038] Preferably, the waist-shaped through hole is arranged along the axial direction of the hydraulic adjustment rod 31 .

[0039] Considering that the relative position of the output end of the motor 1 and the protective shell 4 also changes after the position of the adjusting nut 32 changes, the waist-shaped through hole needs to be opened into the shape of the output end of the motor 1 moving trajectory with the adjustment of the nut.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A motor transmission belt hydraulic tensioning device, comprising a base (1) and a motor (2), characterized in that: The base (1) is provided with a swing arm (3), the motor is arranged on the swing arm (3), one end of the swing arm (3) is hinged to the base (1), the other end of the swing arm (3) is rotatably provided with a hydraulic adjustment rod (31), and the side of the hydraulic adjustment rod (31) away from the swing arm (3) is hinged to the base (1); The swing arm (3) comprises a long arm section and a short arm section which are connected to each other; the end of the long arm section is connected to a hinge seat provided on the base (1); and the end of the short arm section is rotatably connected to the hydraulic adjustment rod (31).

2. The motor drive belt hydraulic tensioner according to claim 1, characterized in that: A rotating shaft groove (33) is provided at the end of the short arm section, a rotating shaft (34) is arranged in the rotating shaft groove (33), and the rotating shaft (34) is radially inserted into the end of the hydraulic adjustment rod (31).

3. The motor drive belt hydraulic tensioner according to claim 2, characterized in that: A rotational abutment surface (32) is provided at the end of the hydraulic adjustment rod (31), and the rotational abutment surface (32) is in sliding contact with a side wall of the rotating shaft groove (33).

4. The motor drive belt hydraulic tensioner according to claim 2, characterized in that: A support hole is formed at one end of the hydraulic adjustment rod (31) away from the swing arm (3), and the support hole is parallel to the rotating shaft (34).

5. The motor transmission belt hydraulic tensioner according to claim 4, characterized in that: An articulated seat (11) is provided on the base (1), and a connecting shaft in the articulated seat (11) is clearance-matched with the supporting hole.

6. The motor transmission belt hydraulic tensioner according to claim 1, characterized in that: A mounting platform (36) is provided on the upper side of the long arm section, the motor (2) is arranged on the mounting platform (36), and one side edge of the mounting platform (36) abuts against the short arm section.

7. The motor transmission belt hydraulic tensioner according to claim 1, characterized in that: A protective shell (4) is provided on the base (1), a waist-shaped through hole is provided on the protective shell (4), and the output end of the motor (2) extends into the protective shell (4) through the waist-shaped through hole.

8. The motor transmission belt hydraulic tensioner according to claim 7, characterized in that: The waist-shaped through hole is arranged along the axial direction of the hydraulic adjustment rod (31).

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