CN220251245U - Conveyer belt tensioning force detection device - Google Patents

Abstract

The utility model provides a conveyor belt tension detection device, which comprises: a base; the graduated scale is arranged on the base and extends upwards; the sliding piece is arranged on the graduated scale in a sliding manner; the first end of the cross beam is connected to the top end of the sliding piece; the first end of the dynamometer is arranged at the second end of the cross beam; the conveyor belt lifting hook is connected to the second end of the dynamometer and is provided with a containing space for containing the conveyor belt, so that the conveyor belt can extend into the containing space; wherein the slider slides upwardly relative to the scale to lift the belt with upward movement of the belt hook to cause the load cell to measure the tension of the belt. The technical scheme of the application effectively solves the problem that the tension force of the conveyor belt is adjusted by relying on experience of operators in the related art to be low in precision.

Description

Conveyer belt tensioning force detection device

Technical Field

The utility model relates to the field of force detection devices, in particular to a conveyor belt tension detection device.

Background

The conveyor belt of the production facility needs to be adjusted in tension after replacement or after prolonged use. However, the tension adjustment is not standard at present, and the tension adjustment needs to be performed by depending on the experience of operators, but the experiences of different operators are different, so that the tension adjustment of the conveyor belt is different, and the tension adjustment precision of the conveyor belt is easy to be lower.

When the tension of the conveyor belt is too large, the loss of the conveyor belt can be accelerated, and the service life of the conveyor belt is shortened. When the tension of the conveyor belt is too small, the rollers driving the conveyor belt to move slip, which in turn leads to failure or downtime of the production equipment.

Disclosure of Invention

The utility model mainly aims to provide a conveyor belt tension detection device which is used for solving the problem that the tension of a conveyor belt is low in adjustment precision by relying on experience of operators in the related art.

In order to achieve the above object, the present utility model provides a conveyor belt tension detecting apparatus comprising: a base; the graduated scale is arranged on the base and extends upwards; the sliding piece is arranged on the graduated scale in a sliding manner; the first end of the cross beam is connected to the top end of the sliding piece; the first end of the dynamometer is arranged at the second end of the cross beam; the conveyor belt lifting hook is connected to the second end of the dynamometer and is provided with a containing space for containing the conveyor belt, so that the conveyor belt can extend into the containing space; wherein the slider slides upwardly relative to the scale to lift the belt with upward movement of the belt hook to cause the load cell to measure the tension of the belt.

Further, the conveyor belt hook comprises a connecting section connected to the second end of the dynamometer and a horizontal section connected to the connecting section, and an accommodating space is formed between the connecting section and the horizontal section.

Further, the connecting section comprises a vertical section and an inclined section, the vertical section is connected with the second end of the dynamometer, the first end of the inclined section is connected with the vertical section, and the second end of the inclined section is connected with the horizontal section; and/or a transition arc section is arranged between the connecting section and the horizontal section.

Further, the vertical section is hinged with the second end of the dynamometer; and/or when the vertical section is orthographically projected to the horizontal section, the axis of the vertical section is positioned in a preset interval on the horizontal section; the preset interval is between the middle point of the horizontal section and a preset point, the preset point is arranged on one side of the middle point of the horizontal section, which is away from the inclined section, and the distance between the preset point and the middle point of the horizontal section is one tenth of the length of the horizontal section.

Further, the slider includes slider and connecting rod, and slider slidable sets up on the scale, and the first end of connecting rod is connected in the slider, and the first end of crossbeam is connected in the second end of connecting rod.

Further, a distance scale area is arranged on the graduated scale, and the sliding block is sleeved outside the graduated scale and shields part of the distance scale area.

Further, a guide ring is arranged at one end of the graduated scale, which is away from the base, and the guide ring is sleeved outside the second end of the connecting rod.

Further, a fastener is arranged on the sliding block, and the fastener is fastened so that one end of the fastener abuts against the graduated scale.

Further, the second end of the connecting rod always protrudes out of the top end of the graduated scale.

Further, the dynamometer comprises an outer cylinder, a force measuring spring arranged in the outer cylinder and a force measuring rod connected with the force measuring spring and extending out of the outer cylinder, a force value scale area is arranged on the outer cylinder, the outer cylinder is hinged to the second end of the cross beam, and the force measuring rod is connected with the lifting hook of the conveying belt.

By applying the technical scheme of the utility model, the conveyor belt tension detection device comprises: base, scale, slider, crossbeam, dynamometer and conveyer belt lifting hook. The graduated scale is arranged on the base and extends upwards. The sliding piece is slidably arranged on the graduated scale. The first end of the cross beam is connected to the top end of the slider. The first end of the load cell is disposed at the second end of the cross beam. The conveyor hook is connected to the second end of the load cell. The conveyor belt hook has an accommodation space accommodating the conveyor belt so that the conveyor belt can extend into the accommodation space. Wherein the slider slides upwardly relative to the scale to lift the belt with upward movement of the belt hook to cause the load cell to measure the tension of the belt. Thus, the conveyor belt of the production equipment is placed in the accommodating space of the conveyor belt lifting hook, the sliding piece slides upwards for a certain distance relative to the graduated scale, the conveyor belt is lifted by the conveyor belt lifting hook, and the second end of the dynamometer can measure the tension applied to the conveyor belt through the conveyor belt lifting hook. According to multiple experiments, the preset distance of the sliding piece sliding upwards relative to the graduated scale corresponds to the force measured by the dynamometer. The force measured by the dynamometer is within a preset range value when the sliding piece slides upwards by a preset distance relative to the graduated scale, and the tension of the conveyor belt is proper when the force measured by the dynamometer is within the preset range value. Therefore, the detection standard of the tension force of the conveyor belt can be formulated, the sliding piece slides upwards for a preset distance relative to the graduated scale, the conveyor belt is lifted by using the conveyor belt lifting hook, and whether the reading of the dynamometer is within a preset range value or not is read. When the reading of the dynamometer is larger than the upper limit value of the preset range, the tension of the conveyor belt is excessively large; when the reading of the dynamometer is smaller than the lower limit value of the preset range, the tension of the conveyor belt is too small. The tension of the conveyor belt is adjusted through the reading of the dynamometer, so that the tension of the conveyor belt is adjusted more accurately. Therefore, the technical scheme of the application effectively solves the problem that the tension of the conveyor belt is adjusted by relying on experience of operators in the related art with lower precision.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic perspective view showing an embodiment of a conveyor belt tension detecting apparatus according to the present utility model when the conveyor belt is lifted;

FIG. 2 is a schematic perspective view showing the tension detecting apparatus of the conveyor belt of FIG. 1;

FIG. 3 is a schematic perspective view showing another view of the conveyor belt tension detecting apparatus of FIG. 1;

FIG. 4 shows a schematic front view of a conveyor belt hook of the conveyor belt tension detection apparatus of FIG. 1;

fig. 5 shows a schematic front view of the slider and scale of the conveyor belt tension detection apparatus of fig. 1.

Wherein the above figures include the following reference numerals:

10. a base;

20. a graduated scale; 21. a distance scale area; 22. a guide ring;

30. a slider; 31. a slide block; 32. a connecting rod; 33. a fastener;

40. a cross beam;

50. a load cell; 51. an outer cylinder; 52. a force-bearing rod; 53. a force value scale area;

60. a conveyor belt hook; 61. an accommodation space; 62. a connection section; 621. a vertical section; 622. an inclined section; 63. a horizontal section; 64. a transition arc segment;

70. a conveyor belt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1 to 3, the conveyor belt tension detecting apparatus of the present embodiment includes: base 10, scale 20, slider 30, cross beam 40, load cell 50, and conveyor hook 60. A scale 20 is provided on the base 10 and extends upward. The slider 30 is slidably disposed on the scale 20. The first end of the cross beam 40 is connected to the top end of the slider 30. The first end of load cell 50 is disposed at the second end of beam 40. A conveyor hook 60 is attached to a second end of the load cell 50. The conveyor hook 60 has a receiving space 61 to receive the conveyor 70 so that the conveyor 70 can be inserted into the receiving space 61. Wherein the slider 30 slides upward relative to the scale 20 to lift the conveyor belt 70 with the upward movement of the belt hooks 60 to allow the load cell 50 to measure the tension of the conveyor belt 70.

By applying the technical scheme of the embodiment, the conveyor belt tension detecting device comprises: base 10, scale 20, slider 30, cross beam 40, load cell 50, and conveyor hook 60. A scale 20 is provided on the base 10 and extends upward. The slider 30 is slidably disposed on the scale 20. The first end of the cross beam 40 is connected to the top end of the slider 30. The first end of load cell 50 is disposed at the second end of beam 40. A conveyor hook 60 is attached to a second end of the load cell 50. The conveyor hook 60 has a receiving space 61 to receive the conveyor 70 so that the conveyor 70 can be inserted into the receiving space 61. Wherein the slider 30 slides upward relative to the scale 20 to lift the conveyor belt 70 with the upward movement of the belt hooks 60 to allow the load cell 50 to measure the tension of the conveyor belt 70. In this way, the conveyor 70 of the production facility is placed in the receiving space 61 of the conveyor hook 60, the slider 30 is slid upward a certain distance with respect to the scale 20, the conveyor 70 is lifted using the conveyor hook 60, and the second end of the load cell 50 is now able to measure the tension to which the conveyor 70 is subjected by the conveyor hook 60. According to a plurality of experiments, the preset distance by which the slider 30 slides upward with respect to the scale 20 corresponds to the force measured by the load cell 50. That is, it is found that the force measured by the load cell 50 should be within the preset range value when the slider 30 slides upward relative to the scale 20 by the preset distance, and that the tension of the conveyor belt 70 is appropriate when the force measured by the load cell 50 is within the preset range value. This allows the determination of the tension of the conveyor belt 70 by sliding the slider 30 up a predetermined distance relative to the scale 20, lifting the conveyor belt 70 using the conveyor belt hook 60, and reading whether the load cell 50 reading is within a predetermined range. When the reading of the load cell 50 is greater than the upper limit of the preset range, it is indicated that the tension of the conveyor belt 70 is excessive; when the reading of the load cell 50 is less than the lower limit of the preset range, this indicates that the tension of the conveyor belt 70 is too low. The tension of the conveyor belt 70 is adjusted by the readings of the load cell 50 so that the tension of the conveyor belt 70 is more accurately adjusted. Therefore, the technical scheme of the embodiment effectively solves the problem that the tension of the conveyor belt is adjusted by relying on experience of operators in the related art with lower precision.

As shown in fig. 1 to 3, the conveyor hook 60 includes a connection section 62 connected to the second end of the load cell 50 and a horizontal section 63 connected to the connection section 62, with a receiving space 61 formed between the connection section 62 and the horizontal section 63. The arrangement of the connecting section 62 and the horizontal section 63 facilitates the handling of the conveyor hook 60. Moreover, the horizontal segment 63 is provided to make the force applied to the conveyor belt 70 more uniform when the conveyor belt 70 is lifted by the conveyor belt lifting hook 60, so as to more accurately measure the tension of the conveyor belt 70.

As shown in fig. 1-3, the connecting section 62 includes a vertical section 621 and an inclined section 622. Vertical section 621 is connected to a second end of load cell 50, a first end of inclined section 622 is connected to vertical section 621, and a second end of inclined section 622 is connected to horizontal section 63. The provision of the vertical segment 621 facilitates connection of the conveyor belt hook 60 to the load cell 50 so that the conveyor belt hook 60 is more stable when stressed to provide a more accurate measurement of the tension of the conveyor belt 70.

As shown in fig. 1 to 4, a transition arc section 64 is provided between the connecting section 62 and the horizontal section 63. The arrangement of the transition circular arc section 64 facilitates the processing of the connecting section 62 and the horizontal section 63, reduces the occurrence of stress concentration phenomenon, and improves the service life of the conveyor belt lifting hook 60.

As shown in fig. 1 to 4, the vertical segment 621 is hinged to the second end of the load cell 50, so that the conveyor hook 60 can swing according to a stress state when the conveyor 70 is lifted by the conveyor hook 60, to adjust the position of the conveyor hook 60 relative to the conveyor 70, and the axis of the vertical segment 621 can be the same as the stress direction of the conveyor hook 60 by the swing of the vertical segment 621, so that the force measurement of the load cell 50 is more accurate.

As shown in fig. 1 to 4, when the vertical segment 621 is projected forward to the horizontal segment 63, the axis of the vertical segment 621 is located within a preset interval on the horizontal segment 63; the preset interval is between the midpoint of the horizontal segment 63 and a preset point, the preset point is arranged on one side of the midpoint of the horizontal segment 63 away from the inclined segment 622, and the distance between the preset point and the midpoint of the horizontal segment 63 is one tenth of the length of the horizontal segment 63. In this way, the accuracy of measurement by the load cell 50 can be improved, and the conveyor 70 can be more stably lifted by the conveyor hook 60.

As shown in fig. 1 to 5, the slider 30 includes a slider 31 and a connecting rod 32. The slider 31 is slidably disposed on the scale 20, and a first end of the connecting rod 32 is connected to the slider 31. The first end of the cross beam 40 is connected to the second end of the connecting rod 32. The connecting rod 32 is arranged to facilitate the up and down movement of the cross beam 40 by the slider 31, so that the cross beam 40 lifts the conveyor belt 70 by the load cell 50 and the conveyor belt hook 60 when the slider 31 slides up and down on the scale 20. The beam 40 makes the whole conveyor belt tension detecting device more compact and convenient to use.

As shown in fig. 1 to 3, the scale 20 is provided with a distance scale 21, and the slider 31 is sleeved outside the scale 20 and shields a part of the distance scale 21. Thus, after the sliding block 31 slides on the scale 20, the operator can read the sliding distance of the sliding block 31 on the scale 20 through the distance scale area 21 shielded by the sliding block 31, so that the operating efficiency of the operator is improved.

As shown in fig. 1 to 3, a guide ring 22 is provided on the end of the scale 20 facing away from the base 10, and the guide ring 22 is sleeved outside the second end of the connecting rod 32. The guide ring 22 is provided to guide the connecting rod 32 so that the connecting rod 32 can move up and down in the guide direction of the guide ring 22.

As shown in fig. 1 to 3, a fastener 33 is provided on the slider 31, and the fastener 33 is fastened such that one end of the fastener 33 abuts against the scale 20. The provision of the fastener 33 enables the slider 31 to be secured to the scale 20 after the slider 31 has been slid into place on the scale 20. In addition, the fastener 33 is simple in structure and convenient to process.

As shown in fig. 1 to 3, the second end of the connecting rod 32 always protrudes from the top end of the scale 20, so that when the beam 40 swings under the force of the conveyor belt 70, the second end of the connecting rod 32 connected to the beam 40 can be in clearance fit with the scale 20, so that the reading of the dynamometer 50 on the first end of the beam 40 is more accurate.

As shown in fig. 1 to 3, the load cell 50 includes an outer cylinder 51, a load spring provided in the outer cylinder 51, and a load bar 52 connected to the load spring and extending from the outer cylinder 51. The outer cylinder 51 is provided with a force value scale area 53, the outer cylinder 51 is hinged to the second end of the cross beam 40, and the force-bearing rod 52 is connected to the conveyor belt lifting hook 60. Thus, the dynamometer 50 is simple and reliable in structure, and an operator can conveniently read the force value measured by the dynamometer 50. The outer cylinder 51 is hinged to the second end of the cross beam 40, so that the force measuring gauge 50 can adjust the force measuring direction in real time according to the force of the conveyor belt 70, so that the force measured by the force measuring gauge 50 is more accurate.

In this embodiment, the base 10 is a rectangular plate, and the scale 20 is disposed on one side of the center of the rectangular plate. The size of the rectangular plate is as follows: thickness 3mm, width 135mm, length 160mm. The base 10 is preferably made of steel. The scale 20 has the following dimensions: thickness 3mm, width 15mm, length 280mm; the smallest scale of the scale 20 is 1mm. The dimensions of the slider 31 are: thickness 9mm, width 27mm, length 50mm; the slide block 31 is provided with a reading scale zone corresponding to the distance scale zone 21, and the minimum scale of the reading scale zone is 1mm. The dimensions of the load cell 50 are: the diameter of the outer cylinder 51 is 24mm, the wall thickness of the outer cylinder 51 is 1mm, the length of the outer cylinder 51 is 150mm, the force value graduation area 53 is divided into 50 graduations, and the reading of each graduation dynamometer 50 is 1N. The diameter of the force-bearing rod 52 is 18mm, the wall thickness of the force-bearing rod 52 is 1mm, and the length of the force-bearing rod 52 is 150mm. The elastic coefficient of the force measuring spring is 588.24N/m, and the maximum stretching length of the spring is 100mm. The height of the conveyor hook 60 was 100mm, the width of the conveyor hook 60 was 150mm, and the diameters of the connecting section 62 and the horizontal section 63 were 7mm. The material of the conveyor hook 60 is preferably stainless steel. By applying the technical scheme of the embodiment, the tension degree of the conveyor belt 70 can be standardized through the conveyor belt tension force detection device, so that the adjustment of the tension force of the conveyor belt 70 is more accurate. In this embodiment, the conveyor belt 70 of the production facility is a conveyor belt of a capping machine. Through a plurality of experiments, the sliding block 31 slides upwards by 80mm relative to the graduated scale 20, and when the force value displayed by the force measuring meter 50 is between 30N and 40N, the tension of the conveyer belt of the capping machine is in a standard range.

By applying the technical scheme of the embodiment, the standard formulation of the tension force of the conveyor belt 70 can be completed quickly, and when the force value of the dynamometer 50 is larger than the standard value, the condition that the tension force of the conveyor belt 70 is overlarge is indicated; when the force value of the load cell 50 is less than the standard value, it is indicated that the tension of the belt 70 is too small, and the tension jackscrew of the belt 70 needs to be adjusted so that the tension of the belt 70 is within the standard range.

In other embodiments, the conveyor belt of the production facility may be a plate link chain or a belt. Because the plate chain is plastic material, elasticity is less, warp for a short time, and the tensioning force of plate chain is less than behind the standard value and indicates that the wearing and tearing of plate chain are great, need check whether need change the plate chain.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A conveyor belt tension detection apparatus, comprising:

a base (10);

a graduated scale (20) arranged on the base (10) and extending upwards;

a slider (30), the slider (30) being slidably arranged on the scale (20);

-a cross beam (40), a first end of the cross beam (40) being connected to a top end of the slider (30);

a load cell (50), a first end of the load cell (50) being disposed at a second end of the beam (40);

a conveyor belt hook (60) connected to the second end of the load cell (50), the conveyor belt hook (60) having a receiving space (61) for receiving a conveyor belt (70) such that the conveyor belt (70) can extend into the receiving space (61);

wherein the slider (30) slides upward relative to the scale (20) to lift the conveyor belt (70) with upward movement of the conveyor belt hook (60) to cause the load cell (50) to measure the tension of the conveyor belt (70).

2. Conveyor belt tension detection apparatus according to claim 1, characterized in that the conveyor belt hook (60) comprises a connecting section (62) connected to the second end of the load cell (50) and a horizontal section (63) connected to the connecting section (62), between which connecting section (62) and the horizontal section (63) a receiving space (61) is formed.

3. The belt tension detecting apparatus according to claim 2, wherein,

the connecting section (62) comprises a vertical section (621) and an inclined section (622), the vertical section (621) being connected to the second end of the load cell (50), a first end of the inclined section (622) being connected to the vertical section (621), a second end of the inclined section (622) being connected to the horizontal section (63);

and/or a transition arc section (64) is arranged between the connecting section (62) and the horizontal section (63).

4. A conveyor belt tension detecting apparatus according to claim 3, wherein,

the vertical section (621) is hinged with the second end of the dynamometer (50); and/or the number of the groups of groups,

when the vertical section (621) is orthographic projected to the horizontal section (63), the axis of the vertical section (621) is positioned in a preset interval on the horizontal section (63); the preset interval is between the middle point of the horizontal section (63) and a preset point, the preset point is arranged on one side of the middle point of the horizontal section (63) away from the inclined section (622), and the distance between the preset point and the middle point of the horizontal section (63) is one tenth of the length of the horizontal section (63).

5. Belt tension detecting means according to claim 1, characterized in that the slider (30) comprises a slider (31) and a connecting rod (32), the slider (31) being slidably arranged on the scale (20), a first end of the connecting rod (32) being connected to the slider (31), a first end of the cross beam (40) being connected to a second end of the connecting rod (32).

6. The conveyor belt tension detecting device according to claim 5, wherein a distance scale area (21) is provided on the scale (20), and the slider (31) is sleeved outside the scale (20) and shields a part of the distance scale area (21).

7. Belt tension detecting means according to claim 5, characterized in that the end of the scale (20) facing away from the base (10) is provided with a guide ring (22), the guide ring (22) being sleeved outside the second end of the connecting rod (32).

8. Belt tension detecting apparatus according to claim 5, characterized in that the slider (31) is provided with a fastener (33), the fastener (33) being fastened such that one end of the fastener (33) abuts against the scale (20).

9. Conveyor belt tension detection apparatus according to claim 5, characterized in that the second end of the connecting rod (32) always protrudes from the top end of the scale (20).

10. The conveyor belt tension detecting device according to claim 1, wherein the load cell (50) comprises an outer cylinder (51), a load cell spring arranged in the outer cylinder (51), and a load bar (52) connected to the load cell spring and extending out of the outer cylinder (51), wherein a force value scale area (53) is arranged on the outer cylinder (51), the outer cylinder (51) is hinged to the second end of the cross beam (40), and the load bar (52) is connected to the conveyor belt lifting hook (60).