Tensioning device for belt or chain

Abstract

The utility model discloses a belt or chain tensioning device which comprises a main machine frame, a motor frame is installed above the main machine frame, a motor is fixedly connected to the motor frame, the motor frame is installed on the main machine frame in a rotating mode, an upward protrusion is arranged at the upper end of the main machine frame, one end of an adjusting lead screw is movably installed on the motor frame, and the other end of the adjusting lead screw is movably connected with the motor. The other end of the adjusting lead screw penetrates through the protrusion, a first nut and a second nut are installed on the adjusting lead screw, and when the first nut and the second nut are screwed on the two sides of the protrusion, the positions of the main machine frame, the motor frame and the adjusting lead screw are fixed. One end of the adjusting lead screw is cylindrical and is provided with a long thread. The tensioning device is installed on a main machine of mining equipment, the occupied space of the equipment is reduced, the basic design is simplified, the installation difficulty of the equipment is reduced, the basic cost investment is reduced, the tensioning adjustment or replacement of a belt or a chain is simpler, and the use and maintenance of the equipment are facilitated.

Description

Technical Field

[0001] The utility model relates to a mining equipment component, in particular to a tensioning device which is installed on a main machine of the mining equipment and provides convenience for tensioning and loosening of a belt or chain drive. Background Art

[0002] The tensioning device is an indispensable part of belt or chain transmission equipment and is widely used in mining equipment. At present, most mining equipment using belt drive and chain drive still adopts the traditional structural design, the main machine is separated from the transmission device, the tensioning form of the belt or chain is relatively traditional, and the structure is relatively complex. The crusher is a good example. The transmission and the main machine are separated. The basic design needs to be carried out separately for the main machine and the transmission device. The basic design is relatively complex, the equipment occupies a large space, and the basic investment cost is high. The adjustment or replacement of the belt and chain requires loosening the fixing bolts of the motor and moving the motor position before adjustment. The operation process is relatively complicated, the operation time is long, the labor intensity is high, and it is not conducive to the use and maintenance of the equipment.

[0003] In addition, in actual use, the integrated design of the mainframe and transmission device is conducive to simplifying the basic design of mining equipment, reducing the difficulty of equipment installation, saving installation space, and reducing basic investment costs. The use of a specially designed tensioning device can make the overall structure design more reasonable and compact, making the tensioning and loosening operation of the belt or chain simpler, shortening the adjustment or replacement time, improving work efficiency, and facilitating the use and maintenance of the equipment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a belt or chain tensioning device, which effectively solves the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a belt or chain tensioning device, comprising a main frame, a motor frame is installed above the main frame, the motor is fixedly connected to the motor frame, the motor frame is rotatably installed on the main frame, the upper end of the main frame has an upward protrusion, one end of the adjusting screw is movably installed on the motor frame, the other end of the adjusting screw passes through the protrusion, and nut one and nut two are installed on the adjusting screw, when nut one and nut two are tightened on both sides of the protrusion, the positions of the main frame, the motor frame and the adjusting screw are fixed.

[0006] Furthermore, one end of the adjusting screw is cylindrical and has a long thread. This end is fixed to the main frame through nut 1, washer 1, washer 2, and nut 2. The other end is annular, with a hole in the center of the ring, and is connected to the main frame through pin shaft 1, washer 5, and cotter pin 1.

[0007] Furthermore, it also comprises a small belt pulley, the inner hole of which is mounted on the output shaft of the motor through a flat key.

[0008] Furthermore, the motor frame 10 is composed of a motor mounting plate 101 and a support plate 102, both of which are made of steel plates. The left end of the motor mounting plate 101 is bent along the axial direction of the motor 11, and the bending angle is between 90° and 120°. Four mounting holes are provided on the motor mounting plate 101, and the mounting holes cooperate with fasteners to mount the motor on the motor mounting plate. Two groups of support plates 102 are welded on the bottom surface of the motor mounting plate perpendicular to the axial direction of the motor 11, with two pieces in each group. Holes are provided at the bottom and left end of the support plate 102 near the top, which are respectively used to connect with the main frame 1 and the adjusting screw 6.

[0009] Furthermore, it also includes a small pulley, a large pulley and a belt, and the belt connects the small pulley and the large pulley for transmission.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The tensioning device of the utility model is installed on the main machine of the mining equipment, which reduces the space occupied by the equipment, simplifies the basic design, reduces the difficulty of equipment installation, reduces the basic cost investment, makes the tension adjustment or replacement of the belt or chain simpler, and is beneficial to the use and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the tensioning device of the utility model when it is relaxed;

[0016] Figure 4 It is a schematic diagram of the structure of the tensioning device of the utility model when being tensioned.

[0017] In the figure: 1, main frame; 2, nut one; 3, washer one; 4, washer two; 5, nut two; 6, adjusting screw; 7, pin one; 8, washer three; 9, cotter pin one; 10, motor frame; 11, motor; 12, belt; 13, pulley; 14, flat key; 15, fastener; 16, pin two; 17, washer four; 18, washer five; 101, mounting plate; 102, support plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Depend on Figure 1-4 The utility model discloses a tensioning device of the utility model, including a main frame 1, a nut 2, a washer 3, a washer 4, a nut 5, an adjusting screw 6, a pin 7, a washer 3, a split pin 9, a motor frame 10, a motor 11, a belt 12, a small pulley 13, a flat key 14, a fastener 15, a pin 2 16, a washer 4 17, and a washer 5 18. The inner hole of the small pulley 13 is mounted on the output shaft of the motor 11 through the flat key 14, and the motor 11 is fixed to the motor frame 10 with a fastener 15. Two parallel slewing bearings 1 are provided at the bottom of the motor frame 10 along the axial direction of the motor 11, and the slewing bearing 1 is connected to the main frame 1 through the pin 2 16, the washer 4 17, the split pin 2, and the washer 18. Two parallel slewing bearings 2 are arranged at the upper left end of the motor frame 10 along the axial direction of the motor. The slewing bearing 2 is connected to one end of the adjusting screw 6 through a pin 1 7, a washer 3 8, and a cotter pin 1 9. The other end of the adjusting screw 6 is fixed to the frame 1 of the host through a nut 1 2, a nut 2 5, a washer 1 3, and a washer 2 4. The belt 12 is mounted on a small pulley 13, and the other end is mounted on a large pulley (or sprocket) of the host for transmitting motion.

[0020] The main frame includes a main frame 1, a nut 2, a washer 3, a washer 2, a nut 2, a screw 6, a pin 1, a washer 3, a washer 4, a nut 2, a screw 6, a pin 1, a washer 3, a cotter pin 9, a motor frame 10, a motor 11, a belt 12, a small pulley 13, a flat key 14, a fastener 15, a pin 2 16, a washer 4 17, and a washer 5 18. The inner hole of the small pulley 13 is mounted on the output shaft of the motor 11 through the flat key 14. The motor 11 is fixed to the motor frame 10 with a fastener 15. The bottom of the motor frame 10 Two parallel slewing bearings 1 are provided along the axial direction of the motor 11, and the slewing bearings 1 are connected to the main frame 1 through the pin 2 16, the washer 4 17, the split pin 2, and the washer 18. Two parallel slewing bearings 2 are provided along the axial direction of the motor at the upper left end of the motor frame 10, and the two are connected to one end of the adjusting screw 6 through the pin 1 7, the washer 3 8, and the split pin 1 9. The other end of the adjusting screw 6 is fixed to the frame 1 of the main machine through the nut 1 2, the nut 2 5, the washer 1 3, and the washer 2 4. The V-belt is mounted on the small pulley 13, and the other end is mounted on the large pulley (or sprocket) of the main machine, which is used to transmit the motive force.

[0021] The tensioning device of the utility model realizes the position change of the motor 11 and the motor frame 10 by adjusting the position of the adjusting screw 6 and the nut 12 and the nut 25, so that the center distance of the pulley or the sprocket becomes longer or shorter, thereby realizing the loosening or tightening adjustment or replacement of the belt 12. The specific operation is: after loosening the nut 25, tighten the nut 12, the motor 11 and the motor frame 10 rotate counterclockwise as a whole, and the belt 12 becomes loose, and the belt 12 can be replaced at this time. On the contrary, after loosening the nut 2, tighten the nut 25, the motor 11 and the motor frame 10 rotate clockwise as a whole, and the belt 12 is tensioned. When the tensioning requirement is met, tighten the nut 2.

[0022] The motor frame 10 of the utility model is composed of a motor mounting plate 101 and a support plate 102. The motor mounting plate 101 and the support plate 102 are both made of steel plates. The left end of the motor mounting plate 101 is bent along the axis direction of the motor 11. The bending angle can be selected between 90° and 120° according to actual needs. Four mounting holes are provided on the motor mounting plate 101 for mounting the motor 11. Two groups of support plates 102 are welded on the bottom surface of the motor mounting plate 101 perpendicular to the axis direction of the motor 11, and each group has two pieces. Holes are provided at the bottom and left end of the support plate 102 near the top, which are respectively used to connect with the main frame 1 and the adjusting screw 6. When the support plate 102 is welded, the relative concentricity of the holes must be ensured to ensure that the motor frame 10 is flexible to rotate after being assembled with the pin shaft 1 7 and the pin shaft 2 16.

[0023] The adjusting screw 6 of the utility model is made of thick steel plate, one end of which is cylindrical and has a long thread, and the end is fixed to the frame of the main machine through nut 1 2, nut 2 5, washer 1 3, washer 2 4. The other end is annular, and a hole is provided in the center of the ring, which is connected to the main frame 1 through pin 1 7, washer 3 8, cotter pin 1 9. When installed, the axis of the adjusting screw 6 is approximately perpendicular to the left end surface of the motor frame 10.

[0024] The tensioning device of the utility model has a simple, compact and novel structure and strong versatility, and can be used for most mining equipment adopting belt drive or chain drive.

[0025] The tensioning device of the utility model is simple to adjust or replace the belt, which saves time and effort and has low maintenance cost.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A belt or chain tensioning device, comprising a main frame (1), characterized in that: A motor frame (10) is installed above the main frame (1), the motor (11) is fixedly connected to the motor frame (10), the motor frame (10) is rotatably installed on the main frame (1), the upper end of the main frame (1) has an upward protrusion, one end of an adjusting screw (6) is movably installed on the motor frame (10), the other end of the adjusting screw (6) passes through the protrusion, and a nut (2) and a nut (5) are installed on the adjusting screw (6), when the nut (2) and the nut (5) are tightened on both sides of the protrusion, the positions of the main frame (1), the motor frame (10) and the adjusting screw (6) are fixed.

2. A belt or chain tensioning device according to claim 1, characterized in that: One end of the adjusting screw (6) is cylindrical and has a long thread. The end is fixed to the main frame (1) through a nut (2), a washer (3), a washer (4), and a nut (5). The other end is annular, with a hole at the center of the ring. The adjusting screw (6) is connected to the main frame (1) through a pin (7), a washer (8), and a cotter pin (9).

3. A belt or chain tensioning device according to claim 1, characterized in that: The utility model also comprises a small belt pulley (13), the inner hole of which is mounted on the output shaft of the motor (11) through a flat key (14).

4. A belt or chain tensioning device according to claim 1, characterized in that: The motor frame (10) is composed of a motor mounting plate (101) and a support plate (102). The motor mounting plate (101) and the support plate (102) are both made of steel plates. The left end of the motor mounting plate (101) is bent along the axis direction of the motor (11), and the bending angle is between 90° and 120°. The motor mounting plate (101) is provided with four mounting holes, and the mounting holes cooperate with fasteners (15) to mount the motor (11) on the motor mounting plate (101). Two groups of support plates (102) are welded on the bottom surface of the motor mounting plate (101) perpendicular to the axis direction of the motor (11), and each group has two pieces. The bottom and left end of the support plate (102) are provided with holes near the top, which are respectively used to connect with the main frame (1) and the adjusting screw (6).

5. A belt or chain tensioning device according to claim 1, characterized in that: The utility model also comprises a small belt pulley (13), a large belt pulley and a belt (12), wherein the belt (12) connects the small belt pulley (13) and the large belt pulley for transmission.

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