CN219111761U

CN219111761U - Automatic tensioning device and curved block crusher

Info

Publication number: CN219111761U
Application number: CN202223363207.4U
Authority: CN
Inventors: 王志; 陈月; 郭家刚
Original assignee: Jiangsu Zhengxin Industrial Equipment Co ltd
Current assignee: Jiangsu Zhengxin Industrial Equipment Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-02
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses an automatic tensioning device and a curved block crusher, the automatic tensioning device comprises a frame, a motor mounting plate, a motor, a driving wheel, a driven wheel, a supporting frame and a spring mechanism, wherein the spring mechanism comprises a guide screw rod hinged with the supporting frame, a first spring and a second spring sleeved on the guide screw rod, a rotating pin is arranged on the end of the motor mounting plate opposite to the hinged position of the motor mounting plate, the guide screw rod penetrates through the rotating pin, and the first spring and the second spring are limited on two sides of the rotating pin through a first nut and a second nut respectively. According to the utility model, the motor mounting plate is hinged, and the spring mechanism is arranged, so that the pretension force of the belt transmission is controlled in a proper range, and the tensioning frequency is reduced; meanwhile, the belt transmission center distance set by automatic tensioning has a certain floating range, so that automatic compensation can be performed after the transmission belt is stretched, and the frequency of periodic tensioning is further reduced.

Description

Automatic tensioning device and curved block crusher

Technical Field

The present utility model relates to a tensioner, and in particular to an automatic tensioner and a curved block crusher.

Background

At present, belt conveyors are widely used in various industries to convey materials, process the materials and the like. The belt can be loosened after working for a period of time, so that the transmission capacity is reduced, and the belt must be tensioned in time in order to ensure the transmission capacity.

The claw crusher is used for crushing massive materials through two crushing shaft pairs and modes of extrusion, striking, shearing and the like. The crushing shaft is generally driven by a belt drive, and when in operation, the load impact is large and is discontinuous, and the pretension of the drive belt is difficult to adjust. The pretension force is adjusted to be too loose, so that the transmission belt is easy to slip and age, and the productivity of equipment is affected; too tight tension is adjusted, and the driving belt is too long too early, so that the tension is reduced and then slips, and the service life of the driving belt is seriously influenced.

At present, a regular tensioning mode is commonly used, as shown in fig. 10, the belt transmission center distance is adjusted through a mechanical structure, and the tensioning force is set through an empirical or measurement mode, in this mode, since the belt transmission center distance is a fixed value, the length of a transmission belt is lengthened as the working time of the belt transmission is prolonged, and the pretension of the belt transmission is gradually reduced and loosened, so that the tensioning adjustment needs to be performed through regular frequent adjustment.

Disclosure of Invention

Aiming at the problem that the transmission belt needs to be frequently tensioned, the utility model provides the automatic tensioning device and the curved block crusher, and the automatic tensioning device can enable the pretension force of the belt transmission to be more conveniently set to a proper range, reduce the frequency of periodic tensioning, prolong the service life of the transmission belt, improve the use stability of equipment and stabilize the productivity of the equipment.

In order to achieve the above purpose, according to one aspect of the present utility model, an automatic tensioning device is provided, which includes a frame, a motor mounting plate hinged to the frame, a motor mounted on the motor mounting plate, a driving wheel connected to the motor, a driven wheel connected to the driving wheel through a driving belt, a support frame disposed on the frame and disposed opposite to the motor mounting plate, and a spring mechanism connecting the frame and the support frame, wherein the spring mechanism includes a guide screw hinged to the support frame, a first spring and a second spring sleeved on the guide screw, a rotating pin is disposed on an end of the motor mounting plate opposite to the hinge position of the motor mounting plate, the guide screw penetrates through the rotating pin, and the first spring and the second spring are respectively limited on two sides of the rotating pin through a first nut and a second nut.

Preferably, a pair of through holes are formed in the end heads, opposite to the hinge positions of the motor mounting plate, a pair of pin holes are formed in the two ends of the rotating pin, opposite to the hinge positions of the motor mounting plate, the rotating pin penetrates through the through holes and is limited in the through holes through pins inserted into the pin holes, and therefore the rotating pin can rotate in the through holes.

Preferably, washers are respectively arranged at the ends of the first spring and the second spring, which are close to the rotating pin.

Preferably, the motor mounting plate is provided with a strip-shaped through groove, the through groove extends from the end close to the hinged position to the end close to the rotating pin on the motor mounting plate, the bottom plate of the base of the motor is mounted on the through groove through bolts, and two sides of the base of the motor on the motor mounting plate are respectively provided with a limiting mechanism for limiting and fixing the motor.

Further, the limiting mechanism at least comprises a pair of vertical plates which are oppositely arranged, the vertical plates are connected with limiting bolts in a threaded mode, and the axes of the limiting bolts are parallel to the center line of the through groove.

A second aspect of the utility model provides a curved block crusher comprising an automatic tensioning device as described above.

Further, the crusher comprises a pair of automatic tensioning devices as described above.

Still further, the crusher further comprises a crusher body arranged on the frame, and a pair of driven wheels are respectively connected with two blades of the crusher body so as to drive the blades to rotate relatively.

Through the technical scheme, the utility model has the following beneficial effects:

1. according to the utility model, the motor mounting plate is hinged, and the spring mechanism is arranged, so that the pretension force of the belt transmission is controlled in a proper range, the tensioning frequency is reduced, and automatic compensation is performed according to the extension length of the transmission belt under the condition of meeting the pretension force, so that the situation of over-loosening or over-tightening of the belt transmission is avoided, and the transmission efficiency is improved; meanwhile, the belt transmission center distance set by automatic tensioning has a certain floating range, so that automatic compensation can be performed after the transmission belt is stretched, and the frequency of periodic tensioning is further reduced.

2. In a preferred technical scheme of the utility model, the motor can be movably arranged on the motor mounting plate, and the position of the motor is adjusted by the limiting mechanism on the motor mounting plate, so that the center distance of belt transmission can be further increased, and tensioning is realized.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of an automatic tensioning device of the present utility model;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a perspective view of FIG. 1;

FIG. 6 is a schematic illustration of the connection of the spring mechanism to the support plate and motor mounting plate of the present utility model;

FIG. 7 is a schematic perspective view of FIG. 6;

FIG. 8 is a schematic view of the construction of the curved block crusher according to the present utility model;

fig. 9 is a perspective view of fig. 8;

fig. 10 is a schematic diagram of a prior art periodic tensioning scheme.

Description of the reference numerals

A frame 1;

2, a motor mounting plate, a 21 rotating pin, a 22 pin shaft, a 23 through groove, a 24 vertical plate and a 25 limit bolt;

3, a motor and a 31 bottom plate;

4 driving wheels, 5 driving belts, 6 driven wheels and 7 supporting frames;

81 lead screw, 82 first spring, 821 first nut, 83 second spring, 831 second nut, 822,832 washer;

9 crusher body.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

It should be noted that, in the following description, terms such as "upper" and "lower" and the like are used in terms of the directions and the like of the components of the automatic tensioning device, which are normally referred to, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and thus, features defining "first," "second," or the like, may explicitly or implicitly include one or more of such features.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 7, the automatic tensioning device according to the present utility model comprises a frame 1, a motor mounting plate 2 hinged to the frame 1, a motor 3 mounted on the motor mounting plate 2, a driving wheel 4 connected to the motor 3, a driven wheel 6 connected to the driving wheel 4 through a driving belt 5, a support frame 7 provided on the frame 1 and opposite to the motor mounting plate 2, and a spring mechanism connecting the frame 1 and the support frame 7, wherein the spring mechanism comprises a guide screw 81 hinged to the support frame 7, a first spring 82 and a second spring 83 sleeved on the guide screw 81, a rotating pin 21 is provided on an end of the motor mounting plate 2 opposite to the hinge position, the guide screw 81 passes through the rotating pin 21, and the first spring 82 and the second spring 83 are limited on two sides of the rotating pin 21 through a first nut 821 and a second nut 831, respectively.

In the above technical scheme, after the installation of the driving belt 5 is completed, the driving belt 5 can be initially tensioned through the dead weight of the motor 3, but the pretension force at the moment cannot meet the normal working requirement, so that the motor mounting plate 2 is required to be compressed downwards through the spring mechanism to form resultant force with gravity, the center distance of the belt transmission is adjusted, and the pretension force of the driving belt 5 is adjusted to be in a proper state. The specific action process is as follows: the first nut 821 and the second nut 831 are screwed in a direction approaching the support frame 7, and the motor mounting plate 2 is compressed downward by the spring.

When the belt transmission works for a period of time, the length of the transmission belt 5 is lengthened, at the moment, the motor mounting plate 2 automatically rotates downwards around the hinge point under the action of gravity and spring force, and the center distance of the belt transmission is increased, so that the automatic tensioning of the transmission belt is realized. At this time, the tension of the driving belt 5 is still the resultant force of the gravity of the motor 3 and the spring force, and the pretension of the driving belt 5 is not changed greatly in the moving range of automatic tension adjustment, and can be basically kept in a proper range.

According to the utility model, the motor mounting plate 2 is hinged, and the spring mechanism is arranged, so that the pretension of the belt transmission is controlled in a proper range, the tensioning frequency is reduced, and automatic compensation is performed according to the extension length of the transmission belt 5 under the condition of meeting the pretension, so that the situation of over-loosening or over-tightening of the belt transmission is avoided, and the transmission efficiency is improved; meanwhile, the belt transmission center distance set by automatic tensioning has a certain floating range, so that automatic compensation can be performed after the transmission belt is stretched, and the frequency of periodic tensioning is further reduced.

As a preferred embodiment of the rotating pin 21 in the present utility model, a pair of through holes are formed at the opposite ends of the motor mounting plate 2 to the hinge position, a pair of pin holes are formed at the opposite ends of the rotating pin 21, the rotating pin 21 passes through the through holes and is limited in the through holes by a pin shaft 22 inserted in the pin holes, so that the rotating pin 21 can rotate in the through holes.

As shown in fig. 3,

washers

822 and 832 are provided at the ends of the first and

second springs

82 and 83 near the rotation pin 21, respectively, to provide sufficient support for the ends of the first and

second springs

82 and 83.

Further, as shown in fig. 7, the motor mounting plate 2 is provided with a strip-shaped through groove 23, the through groove 23 extends from the end close to the hinge position to the end close to the rotating pin 21 on the motor mounting plate 2, the bottom plate 31 of the base of the motor 3 is mounted on the through groove 23 through bolts, and two sides of the base of the motor 3 on the motor mounting plate 2 are respectively provided with a limiting mechanism for limiting and fixing the motor 3.

In the technical scheme, the position of the motor 3 on the motor mounting plate 2 can be adjusted through the adjustment of the limiting mechanism, so that the center distance of belt transmission is increased, and tensioning is realized.

As a preferred embodiment of the limiting mechanism, as shown in fig. 6 and 7, the limiting mechanism at least comprises a pair of opposite vertical plates 24, wherein a limiting bolt 25 is connected to the vertical plates 24 in a threaded manner, and the axis of the limiting bolt 25 is parallel to the central line of the through groove 23. The limit bolts 25 are screwed, so that the base close to or far away from the motor 3 is realized, and the position of the motor 3 on the motor mounting plate 2 is adjusted.

In a second aspect the utility model provides a curved block crusher comprising said automatic tensioning device.

Further, as shown in fig. 8-9, the curved block crusher includes a pair of the automatic tensioners described above.

In addition, the curved block crusher further comprises a crusher body 9 (the body is in a commercially available common structure, the specific structure of the crusher body is not an innovation point of the scheme, and the detailed description is omitted herein), and the driven wheel 6 and the two blades of the crusher body 9 are respectively connected to drive the blades to rotate relatively.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides an automatic overspeed device tensioner, its characterized in that, including frame (1), with frame (1) articulated motor mounting panel (2), install in motor (3) on motor mounting panel (2), with action wheel (4) that motor (3) are connected, with driven driving wheel (6) that action wheel (4) are connected through drive belt (5), locate on frame (1) and with support frame (7) and the connection that motor mounting panel (2) set up relatively frame (1) with spring mechanism of support frame (7), spring mechanism include with support frame (7) articulated guide screw (81), the cover is established first spring (82) and second spring (83) on guide screw (81), be equipped with on the end that motor mounting panel (2) are relative rather than articulated position rotary pin (21), guide screw (81) pass rotary pin (21), first spring (82) with second spring (83) are in respectively through first nut (821) and second nut (831) both sides are spacing rotary pin (21).

2. An automatic tensioning device according to claim 1, characterized in that the end of the motor mounting plate (2) opposite to the hinge position thereof is provided with a pair of oppositely arranged through holes, two ends of the rotary pin (21) are respectively provided with a pair of oppositely arranged pin holes, and the rotary pin (21) passes through the through holes and is limited in the through holes by a pin shaft (22) inserted in the pin holes so that the rotary pin (21) can rotate in the through holes.

3. An automatic tensioning device according to claim 1, characterized in that said first spring (82) and said second spring (83) are provided with washers (822,832) respectively, close to the ends of said pin (21).

4. An automatic tensioning device according to any one of claims 1 to 3, characterized in that the motor mounting plate (2) is provided with a strip-shaped through groove (23), the through groove (23) extends from the end close to the hinge position to the end close to the rotating pin (21) on the motor mounting plate (2), a bottom plate (31) of the base of the motor (3) is mounted on the through groove (23) through bolts, and two sides of the base of the motor (3) on the motor mounting plate (2) are respectively provided with limiting mechanisms for limiting and fixing the motor (3).

5. The automatic tensioning device according to claim 4, characterized in that the limiting mechanism comprises at least a pair of upright plates (24) which are arranged oppositely, wherein limiting bolts (25) are connected to the upright plates (24) in a threaded manner, and the axes of the limiting bolts (25) are parallel to the central line of the through groove (23).

6. A curved block crusher comprising an automatic tensioning device as claimed in any one of claims 1 to 5.

7. The curved block crusher of claim 6, comprising a pair of automatic tensioners.

8. The curved block crusher according to claim 7, further comprising a crusher body (9) provided on the frame (1), wherein a pair of the driven wheels (6) are respectively connected to two blades of the crusher body (9) to drive the blades to rotate relatively.