Traveling limiting device for secondary conveyor of fully-mechanized coal winning machine

Abstract

The utility model discloses a secondary conveyer walking limiting device of a roadheader, the secondary conveyer walking limiting device of the roadheader comprises limit switches, a controller, a restorer and a protection mechanism, the limit switches are respectively arranged at two ends of a dragging tail, a preset distance is reserved between the limit switches and the end part of the dragging tail, the controller is arranged on the roadheader, the restorer is arranged on the controller, and the protection mechanism is arranged on the restorer. The controller is electrically connected with the limit switch, the controller is located on the roadheader, the restorer is electrically connected with the limit switch, and the protection mechanism is located on the dragging tail and arranged corresponding to the limit switch to protect the limit switch. The walking limiting device for the secondary conveyor of the roadheader has the advantages of being good in safety and capable of reducing the possibility of derailing of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of underground equipment, in particular to a walking limit device for the secondary conveyor of a fully-mechanized heading machine. Background Art

[0002] When the secondary conveyor of the fully-mechanized heading machine walks on the trailing tail, it often happens that when the fully-mechanized heading machine moves forward, the secondary conveyor derails; sometimes when the fully-mechanized heading machine moves backward, the secondary conveyor derails from the rear side, damaging the equipment. Each derailment is prone to causing injury accidents. It is difficult to handle the derailment phenomenon, and the safety factor of personnel during handling is poor, and work injuries are likely to occur. From the perspective of work safety, there is an urgent need for a walking limit device for the secondary conveyor of a fully-mechanized heading machine. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, an embodiment of the utility model provides a walking limit device for the secondary conveyor of a fully-mechanized heading machine, which has the advantages of good safety and reduced occurrence of equipment derailment.

[0004] According to the walking limit device for the secondary conveyor of a fully-mechanized heading machine in the embodiment of the utility model, the walking limit device for the secondary conveyor of a fully-mechanized heading machine includes a limit switch, a controller, a resetter and a protection mechanism. The limit switches are respectively arranged at both ends of the trailing tail, and the limit switches are at a preset distance from the end of the trailing tail. The controller is located on the fully-mechanized heading machine, and the controller is electrically connected to the limit switch. The resetter is electrically connected to the limit switch, and the protection mechanism is arranged on the trailing tail corresponding to the limit switch to protect the limit switch.

[0005] The walking limit device for the secondary conveyor of a fully-mechanized heading machine in the embodiment of the utility model has the advantages of good safety and reduced occurrence of equipment derailment. This application eliminates the occurrence of derailment accidents of the secondary conveyor, reduces the heavy physical labor brought to workers due to derailment accidents of the secondary conveyor, avoids affecting the normal cyclic footage due to derailment, relatively improves the monthly footage, improves work efficiency and ensures the safe operation of the equipment.

[0006] In some embodiments, the limit switch is a normally open contact.

[0007] In some embodiments, the resetter is connected in parallel with the controller, the resetter is connected in series with the limit switch, and the controller is connected in series with the limit switch.

[0008] In some embodiments, the trailing tail has a first mounting point and a second mounting point, and the preset distance from the first mounting point to the tail of the trailing tail is greater than the preset distance from the second mounting point to the head of the trailing tail.

[0009] In some embodiments, the preset distance from the first mounting point to the tail of the trailing tail is 1000 mm, and the preset distance from the second mounting point to the head of the trailing tail is 500 mm.

[0010] In some embodiments, the trailing tail is cut at the first mounting point and the second mounting point to form a mounting groove for exposing the contact of the limit switch.

[0011] In some embodiments, the protection mechanism includes a protection plate connected to the trailing tail. There is an angle between the protection plate and the top of the trailing tail, and the protection plate is located on one side of the limit switch adjacent to the end of the trailing tail.

[0012] In some embodiments, in the extending direction of the trailing tail, the protection plate is symmetrically arranged with respect to the limit switch.

[0013] In some embodiments, the protection mechanism further includes a support member. One end of the support member is connected to the protection plate, and the other end of the support member is connected to the trailing tail. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the traveling limit device of the secondary conveyor of the full-section tunneling machine according to an embodiment of the present invention.

[0015] Figure 2 is a schematic structural diagram of the protection machine of the traveling limit device of the secondary conveyor of the full-section tunneling machine according to an embodiment of the present invention.

[0016] Reference Signs: 1, full-section tunneling machine; 2, secondary conveyor; 3, limit switch; 4, protection plate; 5, support member; 6, trailing tail. Detailed Description of the Embodiments

[0017] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0018] According to the second transporter travel limit device of the comprehensive excavation machine of the embodiment of the utility model, the second transporter travel limit device of the comprehensive excavation machine includes a limit switch 3, a controller, a resetter and a protection mechanism, the limit switches 3 are respectively arranged at the two ends of the drag tail 6, the limit switch 3 is preset at the end of the drag tail 6, the controller is located at the comprehensive excavation machine 1, the controller is electrically connected to the limit switch 3, the controller is located at the comprehensive excavation machine 1, the resetter is electrically connected to the limit switch 3, and the protection mechanism is located on the drag tail 6 and arranged corresponding to the limit switch 3 to protect the limit switch 3. The limit switch 3 is touched by the second transporter 2 when walking on the drag tail 6 to realize the circuit on and off, and the controller is affected by the limit switch 3 to realize the power off and lock of the comprehensive excavation machine 1, stop the comprehensive excavation machine 1 from walking, effectively prevent the second transporter 2 from pulling off and sliding and damaging the tail roller of the belt conveyor, reduce the labor intensity of the tail watcher, and add effective protection for safe production. The resetter is used to control the equipment to reset and start the multi-purpose excavator 1, which is convenient for the driver of the multi-purpose excavator 1 to control, and the protection mechanism is used to protect the limit switch 3 to prevent the limit switch 3 from being damaged.

[0019] The travel limit device of the secondary transporter of the comprehensive excavator according to the embodiment of the utility model has the advantages of good safety and reduced equipment derailment. The application prevents the occurrence of secondary transporter derailment accidents, reduces the heavy physical labor caused by secondary transporter derailment accidents to employees, avoids affecting the normal cycle footage due to derailment, relatively increases the monthly footage, improves work efficiency and ensures the safe operation of equipment.

[0020] In some embodiments, the limit switch 3 is a normally open contact.

[0021] Specifically, the limit switch 3 adopts a normally open contact, and pressing the limit switch 3 closes the normally open point, so that the comprehensive excavator 1 is powered off for protection.

[0022] In some embodiments, the resetter is connected in parallel with the controller, the resetter is connected in series with the limit switch 3 , and the controller is connected in series with the limit switch 3 .

[0023] Specifically, the resetter and the controller are connected in parallel to avoid mutual interference between the resetter and the controller.

[0024] In some embodiments, the trailing tail 6 has a first mounting point and a second mounting point, and a preset distance between the first mounting point and the tail of the trailing tail 6 is greater than a preset distance between the second mounting point and the head of the trailing tail 6 .

[0025] Specifically, the first mounting point and the second mounting point on the trailing tail 6 are respectively close to the tail and the head of the trailing tail 6, and the distance between the first mounting point and the tail is greater than the distance between the second mounting point and the head, which is conducive to the movement of the second transport machine 2 on the trailing tail 6 and allows more second transport machines 2 to be dropped from the tail end of the trailing tail 6.

[0026] In some embodiments, the preset distance from the first installation point to the tail of the trailing tail 6 is 1000 mm, and the preset distance from the second installation point to the head of the trailing tail 6 is 500 mm.

[0027] Specifically, the distances from the two installation points to the end of the trailing tail 6 are fixed, which is convenient for processing and installing the limit switch 3.

[0028] In some embodiments, installation grooves are cut at the first installation point and the second installation point on the trailing tail 6, and the installation grooves are used to expose the contacts of the limit switch 3.

[0029] Specifically, the installation groove is a notch with a length * width = 50 mm * 30 mm cut at the installation point by gas welding to expose the contacts of the limiter switch. The notch area of the installation groove allows the limit switch 3 to enter.

[0030] In some embodiments, the protection mechanism includes a protection plate 4. The protection plate 4 is connected to the trailing tail 6, there is an angle between the protection plate 4 and the top of the trailing tail 6, and the protection plate 4 is located on one side of the limit switch 3 adjacent to the end of the trailing tail 6.

[0031] Specifically, the protection plate 4 is placed at the position between the limit switch 3 and the end of the trailing tail 6. The protection plate 4 is inclined relative to the top of the trailing tail 6, which can prevent the secondary transporter 2 from moving relative to the trailing tail 6 to a certain extent. The inclined surface of the protection plate 4 can prevent debris from falling and triggering the limit switch 3, thereby protecting the limit switch 3 from accidental shutdown.

[0032] In some embodiments, in the extending direction of the trailing tail 6, the protection plate 4 is symmetrically arranged with respect to the limit switch 3.

[0033] Specifically, the two protection plates 4 are symmetrically arranged with respect to the limit switch 3. The protection plate 4 can prevent the secondary transporter 2 from moving relative to the trailing tail 6 to a certain extent. After the secondary transporter 2 contacts the limit switch 3 and passes over the inclined protection plate 4, it can be blocked by the protection plate 4 on the other side to avoid further detachment, realizing the limit of the secondary transporter 2.

[0034] In some embodiments, the protection mechanism further includes a support member 5. One end of the support member 5 is connected to the protection plate 4, and the other end of the support member 5 is connected to the trailing tail 6.

[0035] Specifically, the support member 5 supports the protection plate 4. The support member 5, the protection plate 4 and the trailing tail 6 form a triangular structure, which can enhance the structural strength of the protection plate 4, so that the protection plate 4 can withstand greater pressure and extend the service life.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on the top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A walking limit device for the second conveyor of a full-section heading machine, characterized in that, Including: Limit switches, which are respectively arranged at both ends of the trailing tail, and the limit switches are at a preset distance from the ends of the trailing tail; A controller, which is located on the full-section tunneling machine, and the controller is electrically connected to the limit switches; A resetter, which is located on the full-section tunneling machine, and the resetter is electrically connected to the limit switches; A protection mechanism, which is arranged on the trailing tail corresponding to the limit switches to protect the limit switches.

2. The two-conveyor walking limit device of the fully-mechanized heading machine according to claim 1, characterized in that, The limit switches are normally open contacts.

3. The two-conveyor walking limit device of the fully-mechanized heading machine according to claim 1, wherein, The resetter is connected in parallel with the controller, the resetter is connected in series with the limit switches, and the controller is connected in series with the limit switches.

4. The walking limit device for the secondary conveyor of the full-section tunneling machine according to claim 2, characterized in that, There are a first mounting point and a second mounting point on the trailing tail, and the preset distance from the first mounting point to the tail of the trailing tail is greater than the preset distance from the second mounting point to the head of the trailing tail.

5. The walking limit device for the secondary conveyor of the full-heading machine according to claim 4, characterized in that, The preset distance from the first mounting point to the tail of the trailing tail is 1000 mm, and the preset distance from the second mounting point to the head of the trailing tail is 500 mm.

6. The second-stage conveyor traveling limit device of the fully-mechanized heading machine according to claim 4, characterized in that Mounting grooves are cut at the first mounting point and the second mounting point of the trailing tail, and the mounting grooves are used to expose the normally open contacts of the limit switches.

7. The walking limit device for the second conveyor of the fully-mechanized heading machine according to claim 1, characterized in that, The protection mechanism includes a protection plate, the protection plate is connected to the trailing tail, there is an included angle between the protection plate and the top of the trailing tail, and the protection plate is located on one side of the limit switch adjacent to the end of the trailing tail.

8. The walking limit device for the secondary conveyor of the full-section tunneling machine according to claim 7, wherein, In the extending direction of the trailing tail, the protection plate is symmetrically arranged with respect to the limit switch.

9. The second-transport machine walking limit device of the full-heading machine according to claim 7, characterized in that, It further includes a support member, one end of the support member is connected to the protection plate, and the other end of the support member is connected to the trailing tail.

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