Automatic deviation rectifying device

Abstract

The utility model discloses an automatic deviation rectifying device, which relates to the technical field of deviation prevention of conveying belts and comprises a deviation rectifying seat and a conical groove, the deviation rectifying seat comprises a base and two bearing seats, the two bearing seats are symmetrically arranged on two sides of the base, and edge folding lugs at two ends of the base are mounted on a frame of a belt conveyor; the conical groove comprises a bottom plate, side plates, end rotating shafts, shaft seats and conical carrier roller clamping plates, the side plates are installed on the two sides of the top of the bottom plate, the top faces of the side plates are inclined faces, the conical carrier roller clamping plates are installed between the two ends of the two side plates, and the two ends of a conical carrier roller are assembled on the two conical carrier roller clamping plates respectively; two conical grooves are symmetrically formed in the base, an end rotating shaft is arranged at the outer side end of the bottom of the bottom plate, the end rotating shaft is rotationally assembled in a bearing seat, a shaft seat is arranged at the inner side end of the bottom of the bottom plate, and the shaft seat is arranged on the base in a rolling mode; and the two conical grooves are connected and linked through a sliding shaft. The automatic deviation rectifying device can sensitively and reliably rectify deviation of the conveying belt and is suitable for positive and negative deviation rectifying of the conveying belt.

Description

TECHNICAL FIELD

[0001] The utility model relates to a conveying belt deviation prevention technical field, especially an automatic deviation rectifying device. BACKGROUND

[0002] Belt conveyors are widely used in the granular, powder material conveying process of various industries, and reliable and stable operation is its main feature requirement. The conveying belt deviation phenomenon is the most common fault of the belt conveyor, and how to prevent the conveying belt deviation is actually the most headache problem of all users using the belt conveyor.

[0003] There are many factors causing the conveying belt deviation. The belt conveyor is an ultra-long device, and almost all the racks are welded and manufactured on site. The manufacturing error of the rack will inevitably occur, and the operation of the conveying belt requires no error in theory. The performance form of the two is the deviation of the conveying belt. The belt joint is mostly hot connected on site, and the diagonal line of the belt cannot be completely consistent, that is, the lengths of the two sides of the belt are inconsistent, so that the tension of the two sides is also different. The belt will run to the side with larger tension. The belt itself is not straight or the thickness difference is large, which will cause deviation. The non-parallel installation of the carrier roller also causes deviation.

[0004] At present, there are many methods to prevent the belt deviation. First of all, the manufacturing and installation accuracy of the rack should be improved. The accuracy of the carrier roller, the main and driven pulleys can be ensured by using machine cutting, and the accuracy of the rack welding depends on the fine work on site. Obviously, improving the rigidity and accuracy of the rack can reduce the deviation phenomenon. Adjusting the deviation by adjusting the tension of the two sides of the belt by using the tensioning mechanism is also a common preventive measure. Adjusting the front and rear positions or the left and right heights of the carrier roller can also play a certain role. The simplest method is to add a side guard roller on both sides of the belt. Although this method is effective, the side of the belt is easily damaged under long-term stress, and the side guard roller is also easily worn and damaged, so the failure rate is still high.

[0005] Detecting the deviation of the belt, electrically automatically calculating according to the deviation amount, and automatically rectifying by means of a set of execution mechanism is also a feasible scheme, but the cost and use cost are very high, especially the length range of the conveyor that can be corrected by one correction is only about 20 mm, which means that several correction devices need to be installed for a 100-meter belt conveyor, which is not economical. Pneumatic automatic correction is also a method, and the structure design is also relatively complex. The use is also prone to failure and is not convenient.

[0006] There is a self-aligning correction device, which is equivalent to a group of carrier rollers not directly installed on the rack, but a shaft is welded at the middle position of the carrier roller group. The shaft is supported on the thrust bearing, so that the whole carrier roller group can rotate around the middle point. In actual use, this device cannot play a good correction role. The utility model discloses a content

[0007] The utility model discloses a kind of automatic deviation correcting devices, to solve the problems existing in the prior art described above, it can be sensitive, reliably deviation correcting to conveying belt, and the automatic deviation correcting device is applicable to the deviation correcting of conveying belt's positive and negative rotation.

[0008] To achieve the above object, the utility model provides the following scheme: the utility model provides an automatic deviation correcting device, including deviation correcting seat and taper groove, the deviation correcting seat includes base and two bearing seats, two the bearing seat is symmetrically arranged at the two sides of the base, and the two ends of the base are installed on the rack of belt conveyor with edge ear;The taper groove includes bottom plate, side plate, end shaft, shaft seat and taper roller clamping plate, the top two sides of the bottom plate are installed with the side plate, the top surface of the side plate is inclined surface, the two ends between two side plates are all installed with the taper roller clamping plate, and the two ends of taper roller are respectively assembled on two taper roller clamping plates;Two taper grooves are symmetrically installed on the base, and the bottom outer end of the bottom plate is provided with the end shaft, the end shaft is rotatably assembled in the bearing seat, the bottom inner end of the bottom plate is provided with the shaft seat, and the shaft seat is rotatably arranged on the base;Two taper grooves are connected through slide shaft and are connected.

[0009] In an embodiment, the bottom of the shaft seat is provided with an open slot, a bearing is assembled with a screw shaft and a washer at the open slot, and the bearing can roll on the upper surface of the base.

[0010] In an embodiment, the upper end of the shaft seat is located in the taper groove through the bottom plate, the upper end of the shaft seat is assembled with a sliding cap, and the sliding cap can rotate around the axis of the shaft seat.

[0011] In an embodiment, the two ends of the slide shaft pass through the sliding caps of the two side taper grooves respectively; and the middle part of the slide shaft is fixed on the middle shaft through a screw.

[0012] In an embodiment, the middle part of the base is provided with an intermediate bearing seat, and the middle shaft is rotatably assembled in the bearing hole of the intermediate bearing seat.

[0013] In an embodiment, two flat roller clamping plates are symmetrically arranged on the base, the flat roller clamping plates are arranged in the openings on the base, and the two ends of the flat roller are respectively assembled in the flat roller clamping plates on the two sides.

[0014] In an embodiment, a waist-shaped rectangular hole is formed in the middle part of the flat roller clamping plate, and the two ends of the slide shaft are connected with the shaft seat after passing through the waist-shaped rectangular hole.

[0015] In an embodiment, a reinforcing plate is arranged between the two side plates on the bottom plate.

[0016] The utility model discloses relative to prior art has obtained the following beneficial technical effects:

[0017] The automatic deviation rectifying device in the utility model, including deviation rectifying seat and taper groove, deviation rectifying seat includes base and two bearing seats, two bearing seats are arranged on the both sides of base symmetry, and the both ends of base's edge ear are installed on the rack of belt conveyor, taper groove includes bottom plate, side plate, end pivot, axle seat and taper roller clamping plate, and the both sides of bottom plate's top are installed with side plate, and the top surface of side plate is inclined surface, and the both ends between two side plates are all installed with taper roller clamping plate, and the both ends of taper roller are assembled on two taper roller clamping plates respectively, two taper grooves are connected through slide axle and are connected in parallel and move together on base, and the bottom outside end of bottom plate is provided with end pivot, and end pivot is rotatably assembled in bearing seat, and the bottom inside end of bottom plate is provided with axle seat, and axle seat is rotatably arranged on base, the automatic deviation rectifying device can rectify the deviation of the conveying belt sensitively and reliably, and is suitable for the positive and negative rotation deviation rectification of the conveying belt. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without paying creative labor for those skilled in the art.

[0019] Figure 1 It is the overall structure of automatic deviation rectifying device plan view;

[0020] Figure 2 It is the A direction section view in Figure 1 It is the A direction section view in

[0021] Figure 3 It is the structure of deviation rectifying seat diagram;

[0022] Figure 4 It is the overall structure of taper groove schematic view;

[0023] Figure 5 It is the plan view of taper groove;

[0024] Figure 6 It is the A direction section view in Figure 5 It is the A direction section view in

[0025] Figure 7 It is the deviation rectifying principle analysis diagram;

[0026] Figure 8 It is the enlarged view of speed direction and deflection angle in Figure 7 It is the enlarged view of speed direction and deflection angle in

[0027] Wherein, 1, deviation rectification seat; 1.1, base; 1.2, bearing seat; 1.3, thrust bearing seat; 1.4, flat roller clamping plate; 2, taper groove; 2.1, bottom plate; 2.2, side plate; 2.3, reinforcing plate; 2.4, end rotating shaft; 2.5, shaft seat; 2.6, taper roller clamping plate; 3, middle rotating shaft; 4, sliding shaft; 5, sliding cap; 6, sleeve; 7, taper roller; 8, flat roller; 9, bearing; 10, thrust bearing; 11, bearing; 12, screw shaft; 13, screw; 14, washer; 15, large washer; 16, screw; 17, round nut; 18, conveying belt; 19, left supporting seat; 20, right supporting seat. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] The utility model discloses an automatic deviation rectification device to solve the problems in the prior art, which can rectify the conveying belt sensitively and reliably, and is suitable for rectifying the forward and reverse rotation of the conveying belt.

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, comprehensible and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0031] As shown in Figures 1-8 The utility model provides an automatic deviation rectification device, and the specific implementation is as follows:

[0032] Figure 1 It is the general assembly drawing of the deviation rectification device, and all deviation rectification parts are assembled on the deviation rectification seat 1. The deviation rectification seat 1 three-dimensional drawing is as shown in Figure 3 The deviation rectification seat 1 is mainly welded by the base 1.1, the intermediate bearing seat 1.2, the thrust bearing seat 1.3 at both ends and the flat roller clamping plate 1.4. The base 1.1 is a sheet metal folded edge part, the flat roller clamping plate 1.4 is inserted into the insertion hole of the base 1.1, the positioning is accurate, under the clamping of laser cutting, the machining precision and rigidity of the deviation rectification seat 1 are very good, and the folded edge ears at both ends of the deviation rectification seat 1 are installed on the rack of the belt conveyor, the height of the deviation rectification device can be adjusted through the four holes on the folded edge ears, and the demand of supporting the belt can be met. Figure 1 The taper groove 2 in the deviation rectification seat 1 is also a sheet metal welded part with insertion structure, and the three-dimensional drawing is as shown in Figure 4As shown, the conical groove 2 is welded from a base plate 2.1, a side plate 2.2, a reinforcing plate 2.3, an end shaft 2.4, a shaft seat 2.5, and a conical roller clamping plate 2.6. It is assembled into the thrust bearing seat 1.3 of the alignment seat 1 via the end shaft 2.4. Figure 1 In the middle view, the bearing 11 is installed in the opening groove of the bearing seat 2.5 of the tapered groove 2 using the screw shaft 12 and washer 14. The bearing 11 can roll on the upper surface of the base 1.1. Theoretically, the bearing 11 and the base 1.1 are tangent. In practice, it is necessary to adjust the end face clearance between the end rotating shaft 2.4 and the thrust bearing 10 (not shown in the figure) by using a thin shim to achieve the tangency between the bearing 11 and the base 1.1. This ensures that the tapered groove 2 can both swing and bear force.

[0033] A sliding cap 5 is fitted onto the upper end of the bearing seat 2.5 of the tapered groove 2. The sliding cap 5 is made of graphite bronze or other wear-resistant material and has dry wear resistance. It is pressed against the upper end face of the bearing seat 2.5 by screws 13 and large washers 15, and the sliding cap 5 can rotate around the axis of the bearing seat 2.5. The sliding shaft 4 passes through the sliding caps 5 on the left and right tapered grooves, which is equivalent to the sliding shaft 4 sliding in the hole of the sliding cap 5. The sliding shaft 4 is a chrome-plated hard shaft with a through hole at the midpoint. The sliding shaft 4 is fixed to the central rotating shaft 3 by screws 16. The central rotating shaft 3 is inserted into the bearing hole in the bearing seat 1.2. In this way, the two tapered grooves 2 are linked to swing, that is, one swings forward and the other swings backward. The oblong hole on the flat idler roller plate 1.4 is designed for the sliding shaft 4 to pass through. The flat idler 8 is clamped on the flat idler clamping plate 1.4, and the conical idler 7 is clamped on the conical idler clamping plate 2.6. The installation method is the same as that of other idlers on the belt conveyor, which makes it easy to replace.

[0034] In this automatic correction device, the middle flat roller 8, apart from being able to rotate, has no other movement in principle, while the conical roller 7, in addition to rotating, also performs a linkage oscillation. Its correction principle is as follows.

[0035] like Figure 7 and Figure 8 As shown in the correction analysis diagram, the belt is located on the tapered idlers 7 on both the left and right sides. The belt moves forward (upward in the diagram) at a certain speed V0. Assuming the belt shifts to the right by a certain position, the result of this shift is that the right idler deflects forward. Because in this invention, the right idler can only rotate around the thrust bearing seat 1-3, i.e., the right support seat 20 in the diagram, the axis of the right idler deflects at an angle β with the correction device, and angle β points forward. Constrained by the sliding shaft 4, sliding cap 5, and central rotating shaft 3, the left idler deflects backward by the same angle.

[0036] Regarding the right side (hereinafter, left and right refer to...) Figure 7 (Left and right sides viewed directly from the center plane), assuming the belt speed is V. 10 The linear velocity V at the large end of the cone roller 11 small-endian linear velocity V 12Obviously, V 10 Parallel to the center line of the conveyor, shown vertically upwards in the diagram, V 11 V 12 Perpendicular to the center line of the cone roller, V 10 With V 11 V 12 An angle β is formed, and according to the principle of velocity composition, V 10 With V 11 The resultant relative velocity V 13， This V 13 Essentially, it is the relative sliding speed between the belt and the cone idler 7. Here, since the belt movement is active and the cone idler rotation is passive, V 10 >V 11， Relative sliding V 13 Point to V 10 The direction is to the left of the diagram. Similarly, V 10 With V 12 The relative sliding velocity V between them 14 It also points to the left. On the other hand, V 11 Located at the large end of the cone idler, V 12 Located at the little end, with V 11 >V 12 The result of velocity synthesis, V 13 >V 14 This means that the belt's sliding speed at the large end of the tapered idler is greater than its sliding speed at the small end. Therefore, the sliding speed and direction determine that the belt will move to the left, that is, in the direction where the β angle decreases.

[0037] For the left side, the belt speed V 20 With the linear velocity V of the large end of the idler roller 21 Composite slip velocity V 23， V 20 With respect to the linear velocity V of the small end of the idler roller 22 Composite slip velocity V 24 V 23 V 24 Both points to the left, forcing the belt to move to the left, i.e., moving in the direction where the β angle decreases, and similarly, V... 23 >V 24 .

[0038] Both conical idlers 7 move the belt to the left, reducing the movement at angle β. This results in a greater force preventing belt deviation, making it more sensitive to belt misalignment. When angle β approaches 0°, the axes of the conical idlers coincide, and V... 10 With V 11、 V 12 Overlap, sliding velocity V 13 =V 14 =V 23 =V 24=0, no slip between the belt and the cone pulley 7, the belt runs normally.

[0039] When we assume that the belt runs to the right, the belt contacts the left and right cone pulleys at different positions, more on the right and less on the left, and there must be a V 11 >V 12 Moreover, the speed of the belt on the two sides is also offset, that is, V 10 >V 20 The result of the joint action of these factors is that the slip speed of the belt on the right is greater than that on the left, that is, V 13 +V 14 >V 23 +V 24 This is also a theory for increasing the correction sensitivity.

[0040] If the belt runs to the left, it will cause the deflection angle β to be reversed, that is, the left β angle is in front (upward) and the right β angle is in back (downward), and the result of the speed combination is that the slip speed points to the right, that is, the belt must move to the right.

[0041] It should be noted that for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, any reference signs in the claims should not be regarded as limiting the claims.

[0042] The principle and implementation mode of the present application are described by applying specific examples in the present application, the above embodiment is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An automatic deviation correcting device, characterized by: The application relates to a belt conveyor with a deviation rectifying base and a taper groove, wherein the deviation rectifying base comprises a base and two bearing seats, the two bearing seats are symmetrically arranged on two sides of the base, and the two ends of the base are provided with flange ears which are mounted on the rack of the belt conveyor; the taper groove comprises a bottom plate, side plates, end rotating shafts, shaft seats and taper roller clamping plates, the top sides of the side plates are mounted on the two sides of the top of the bottom plate, the top surfaces of the side plates are inclined surfaces, the taper roller clamping plates are mounted between the two ends of the two side plates, and the two ends of the taper roller are respectively assembled on the two taper roller clamping plates; two taper grooves are symmetrically mounted on the base, the end rotating shafts are arranged on the outer ends of the bottom of the bottom plate, the end rotating shafts are rotatably assembled in the bearing seats, the shaft seats are arranged on the inner ends of the bottom of the bottom plate, and the shaft seats are rollingly arranged on the base; the two taper grooves are connected through a sliding shaft and are connected in linkage.

2. The automatic deviation correcting device according to claim 1, characterized in that: The bottom of the shaft seat is provided with an open groove, a bearing is assembled on the open groove through a screw shaft and a gasket, and the bearing can roll on the upper surface of the base.

3. The automatic deviation correcting device according to claim 1, characterized in that: The upper end of the shaft seat is located in the taper groove through the bottom plate, the upper end of the shaft seat is provided with a sliding cap, and the sliding cap can rotate around the axis of the shaft seat.

4. The automatic deviation correcting device according to claim 3, characterized in that: The two ends of the sliding shaft respectively pass through the sliding caps of the two side taper grooves; and the middle part of the sliding shaft is fixed on the middle rotating shaft through screws.

5. The automatic deviation correcting device according to claim 4, characterized in that: The middle part of the base is provided with a middle bearing seat, and the middle rotating shaft is rotatably assembled in the bearing hole of the middle bearing seat.

6. The automatic deviation correcting device according to claim 1, characterized in that: Two flat roller clamping plates are symmetrically arranged on the base, the flat roller clamping plates are arranged in the holes on the base, and the two ends of the flat roller are respectively assembled on the flat roller clamping plates on the two sides.

7. The automatic deviation correcting device according to claim 6, characterized in that: The middle part of the flat roller clamping plate is provided with a waist-shaped rectangular hole, and the two ends of the sliding shaft pass through the waist-shaped rectangular hole and are connected with the shaft seat.

8. The automatic deviation correcting device according to claim 1, characterized in that: The base is provided with a reinforcing plate between the two side plates.

Images