Light towing cable device for underground coal mine tunneling roadway

Abstract

The utility model belongs to the technical field of roadway towing, and particularly relates to a light towing device for an underground coal mine tunneling roadway, which comprises a guide rail and buffer hanger assemblies, the guide rail is of an I-shaped steel structure and is laid along the extension direction of a roadway top plate, and the two groups of symmetrically arranged buffer hanger assemblies are mounted on a lower flange of the guide rail in a rolling manner. The buffering hanging bracket assembly comprises rollers, the rollers are rotationally installed at the top ends of a first connecting arm and a second connecting arm, the bottom ends of the first connecting arm and the second connecting arm are rotationally connected with connecting lugs, the connecting lugs are installed at the two ends of a connecting plate, and connecting bases are arranged on one side of the first connecting arm and one side of the second connecting arm and rotationally connected with the two ends of a buffering damper. A connecting bolt is inserted into the connecting plate, and a U-shaped lifting ring is rotationally sleeved on the connecting bolt. The guide rail is convenient to mount, and the lower flange with inclination can provide stable guide support for the roller; a connecting rod and a buffer damper in the buffer hanging bracket assembly can play a role in buffering and energy absorption when bearing instant acting force of the cable, and the cable is effectively protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel towing cables, and in particular relates to a light-duty towing cable device for tunneling tunnels in underground coal mines. Background Art

[0002] The utility model patent with the authorization announcement number CN220081509U discloses a light cable towing device for underground coal mine excavation tunnels, which includes: a cable hanger and a slide rail assembly, the cable hanger is connected to the slide rail assembly, the slide rail assembly consists of a slide, a connecting plate and a hanging ring, the hanging ring is fixedly connected to the top of the slide, the slide is connected to the connecting plate, the connecting plate is provided with a mounting hole, and a slotted countersunk bolt assembly is inserted into the mounting hole, so that a group of slides are connected in sequence to form a straight track group extending along the tunnel; the inner sides of the two inclined surfaces of the cable hanger are connected with a fixed shaft, and the axial surface of the fixed shaft is fixedly connected to the inner ring surface of the rolling bearing with dust covers on both sides. It solves the problem of cable dragging during travel, especially suitable for the problem of cable falling to the ground when the underground coal mine excavator is working.

[0003] However, the above mechanism has the following problems: 1. The slide rail assembly has many parts, which makes installation complicated, time-consuming and labor-intensive; 2. The cable hanger lacks a buffer design. When the cable power supply equipment starts to move, the cable is dragged by an instantaneous traction force, which causes a large friction between the cable eye and the cable, causing damage to the cable surface. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a lightweight towing cable device for underground coal mine excavation tunnels, so as to solve the problems that the existing tunnel towing cable device has many slide rail components, the installation is relatively cumbersome, and the cable hanger lacks a buffer design, which makes the cable surface easily damaged.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a light towing cable device for underground coal mine excavation tunnels, comprising a guide rail and a buffer hanger assembly, the guide rail being an I-beam structure, the upper flange of the guide rail being provided with a through hole for inserting bolts, the guide rail being laid along the extension direction of the tunnel roof, two groups of symmetrically arranged buffer hanger assemblies being rollingly mounted on the left and right sides of the lower flange of the guide rail, the buffer hanger assembly comprising rollers, the rollers being rotatably mounted on the top ends of connecting arm one and connecting arm two, the bottom ends of connecting arm one and connecting arm two being rotatably connected to connecting ears through a pin shaft, the connecting ears being mounted at both ends of a connecting plate, a connecting seat being provided on one side of the connecting arm one and connecting arm two, the connecting seat being rotatably connected to both ends of a buffer damper through a pin shaft, a through hole for inserting connecting bolts being provided on the connecting plate, and a U-shaped lifting ring being rotatably mounted on the connecting bolts.

[0006] The beneficial effects of the utility model are as follows: the guide rail is easy to install, and the inclined lower flange can provide stable guiding support for the two sets of rollers; the setting of the connecting rod and the buffer damper in the buffer hanger assembly can play a role in buffering and absorbing energy when the U-shaped lifting ring is subjected to the instantaneous force of the cable, thereby effectively protecting the cable.

[0007] In order to make the buffer hanger assembly move stably under the guidance of the guide rail;

[0008] As a further improvement of the above technical solution: the axis of the roller is parallel to the top surface of the lower flange of the guide rail.

[0009] The beneficial effect of this improvement is that while the guide rail provides guidance and support for the rollers in the front-rear direction, the inclined lower flange can provide stable left and right limit for the two groups of rollers to prevent the rollers from falling off the guide rail.

[0010] In order to ensure the installation stability of the guide rail;

[0011] As a further improvement of the above technical solution: a plurality of groups of through holes are provided on the upper flange of the guide rail so as to be symmetrically opposed to the web of the guide rail on the left and right and at intervals in the front and rear.

[0012] The beneficial effect of this improvement is that the multiple groups of through holes symmetrically provided can enable the guide rail to be firmly installed on the top plate of the tunnel under the tightening of the anchor bolts, thereby providing stable support for the cable.

[0013] In order to ensure the stability of the positions of the two sets of buffer hanger assemblies;

[0014] As a further improvement of the above technical solution: the two ends of the outer side surface of the U-shaped lifting ring are slidably connected to the opposite side surfaces of the two connecting plates.

[0015] The beneficial effect of this improvement is that under the locking of the nut of the connecting bolt and the support of the U-shaped lifting ring, the distance between the two groups of buffer hanger assemblies is limited and locked, thereby effectively ensuring the stability of the positions of the two groups of buffer hanger assemblies, so that the buffer hanger assemblies can move stably on the guide rail under the traction of the cable.

[0016] In order to ensure the stability of the movement of the buffer hanger assembly;

[0017] As a further improvement of the above technical solution: the structural dimensions of the connecting arm 1 and the connecting arm 2 are the same, and the hole distances from the pin holes arranged at the bottom ends of the connecting arm 1 and the connecting arm 2 to the through holes on the connecting plate for inserting the connecting bolts are the same.

[0018] The beneficial effect of this improvement is that the connecting arm 1 and the connecting arm 2, which are symmetrically arranged with the connecting bolt as the symmetry axis, can enable the buffer hanger assembly as a whole to move stably on the guide rail.

[0019] In order to avoid structural interference between the buffer damper and the guide rail;

[0020] As a further improvement of the above technical solution: the buffer damper is arranged on the side of the connecting arm 1 and the connecting arm 2 facing away from the guide rail.

[0021] The beneficial effect of this improvement is that the buffer damper does not come into contact with the guide rail when it is extended or retracted, thereby ensuring that the buffer damper plays an effective role in buffering and absorbing energy.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is the front view of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model without the guide rail;

[0026] Figure 4 It is a structural schematic diagram of the buffer hanger assembly in the utility model;

[0027] In the figure: 1. guide rail; 2. buffer hanger assembly; 21. connecting plate; 22. connecting ear; 23. connecting arm 1; 24. connecting arm 2; 25. connecting seat; 26. buffer damper; 27. roller; 3. connecting bolt; 4. U-shaped lifting ring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0029] Embodiment 1:

[0030] like Figure 1As shown in —4: A light towing cable device for underground coal mine excavation tunnels, including a guide rail 1 and a buffer hanger assembly 2, wherein the guide rail 1 is an I-beam structure, and a through hole for inserting bolts is opened on the upper flange of the guide rail 1. The guide rail 1 is laid along the extension direction of the tunnel roof, and two groups of symmetrically arranged buffer hanger assemblies 2 are rollingly installed on the left and right sides of the lower flange of the guide rail 1. The buffer hanger assembly 2 includes a roller 27, and the roller 27 is rotatably installed on the top of a connecting arm 1 23 and a connecting arm 24. The bottom ends of the connecting arm 1 23 and the connecting arm 24 are rotatably connected to the connecting ears through a pin shaft, and the connecting ears 22 are installed at both ends of the connecting plate 21. A connecting seat 25 is provided on one side of the second connecting arm 24, and the connecting seat 25 is rotatably connected to the two ends of the buffer damper 26 through a pin shaft. A through hole for inserting the connecting bolt 3 is opened on the connecting plate 21, and a U-shaped lifting ring 4 is rotatably mounted on the connecting bolt 3. The guide rail 1 is easy to install, and the inclined lower flange can provide stable guiding support for the two groups of rollers 27; the setting of the connecting rod and the buffer damper 26 in the buffer hanger assembly 2 can play a role in buffering and absorbing energy when the U-shaped lifting ring 4 is subjected to the instantaneous force of the cable, effectively protecting the cable, and the axis of the roller 27 is parallel to the top surface of the lower flange of the guide rail 1. The guide rail 1 provides a guiding and supporting function for the roller 27 in the front and rear directions. The inclined lower flange can provide stable left and right limit for the two groups of rollers 27 to prevent the rollers 27 from falling off the guide rail 1. The upper flange of the guide rail 1 is symmetrically opposite to the left and right with the web of the guide rail 1, and multiple groups of through holes are arranged at intervals in the front and back. The multiple groups of through holes arranged symmetrically can make the guide rail 1 firmly installed on the top plate of the tunnel under the tightening of the anchor bolts, providing stable support for the cable. The two ends of the outer side surface of the U-shaped lifting ring 4 are slidably connected to the opposite sides of the two connecting plates 21. Under the locking of the nut of the connecting bolt 3 and the support of the U-shaped lifting ring 4, the distance between the two groups of buffer hanger assemblies 2 is limited and locked, thereby effectively ensuring the stability of the position of the two groups of buffer hanger assemblies 2. The buffer hanger assembly 2 can be stably moved on the guide rail 1 under the traction of the cable, the connecting arm 1 23 and the connecting arm 2 24 have the same structural dimensions, the pin holes set at the bottom ends of the connecting arm 1 23 and the connecting arm 2 24 have the same hole spacing to the through holes on the connecting plate 21 for inserting the connecting bolts 3, the connecting arm 1 23 and the connecting arm 2 24 symmetrically arranged with the connecting bolt 3 as the symmetry axis can enable the buffer hanger assembly 2 to move stably on the guide rail 1 as a whole, the buffer damper 26 is arranged on the side of the connecting arm 1 23 and the connecting arm 2 24 facing away from the guide rail 1, and the buffer damper 26 does not contact the guide rail 1 when it is extended and retracted, thereby ensuring that the buffer damper 26 plays an effective role in buffering and absorbing energy.

[0031] The working principle of the present technical solution is as follows: the guide rail 1 is installed on the top plate of the tunnel by means of anchor bolts, a plurality of buffer hanger assemblies 2 are rollingly installed on the lower flange of the guide rail 1, and the cable is passed through the connecting bolts 3 and the U-shaped lifting ring 4 to complete the connection between the device and the cable; when the power supply equipment of the cable, such as an excavator, moves forward, the excavator drives the cable to move, and applies a dragging force obliquely downward to one end of the cable, at which time the U-shaped lifting ring 4 drives the buffer hanger assembly 2 to move forward under the action of the cable, and two sets of rollers 27 roll on the lower flange of the guide rail 1 so that the buffer hanger assembly 2 provides stable support for the cable; and, at the moment when the U-shaped lifting ring 4 is acted upon by the force of the cable, the U-shaped lifting ring 4 drives the connecting plate 21 to move downward through the connecting bolts 3, and when the connecting plate 21 moves downward, the two connecting arms 23 rotate, thereby squeezing the buffer damper 26 to shorten the length of the buffer damper 26, and the buffer damper 26 can play a role in protecting the cable from contraction during the contraction process.

[0032] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A light cable towing device for underground coal mine tunneling, characterized in that: The invention comprises a guide rail (1) and a buffer hanger assembly (2), wherein the guide rail (1) is an I-beam structure, a through hole for inserting a bolt is provided on the upper flange of the guide rail (1), the guide rail (1) is laid along the extension direction of the tunnel roof, two groups of symmetrically arranged buffer hanger assemblies (2) are rollingly mounted on the left and right sides of the lower flange of the guide rail (1), and the buffer hanger assembly (2) comprises a roller (27), and the roller (27) is rotatably mounted on the top of a connecting arm 1 (23) and a connecting arm 2 (24). The bottom ends of the connecting arm 1 (23) and the connecting arm 2 (24) are rotatably connected to the connecting ears via a pin shaft, and the connecting ears (22) are installed at both ends of the connecting plate (21). A connecting seat (25) is provided on one side of the connecting arm 1 (23) and the connecting arm 2 (24), and the connecting seat (25) is rotatably connected to both ends of the buffer damper (26) via a pin shaft. A through hole for inserting a connecting bolt (3) is provided on the connecting plate (21), and a U-shaped lifting ring (4) is rotatably mounted on the connecting bolt (3).

2. The light towing cable device for underground coal mine excavation tunnel according to claim 1 is characterized in that: The axis of the roller (27) is parallel to the top surface of the lower flange of the guide rail (1).

3. The light towing cable device for underground coal mine excavation tunnel according to claim 1 is characterized in that: The upper flange of the guide rail (1) is symmetrically arranged on the left and right sides of the web of the guide rail (1), and multiple groups of through holes are arranged at intervals in the front and back.

4. The light towing cable device for underground coal mine excavation tunnel according to claim 1 is characterized in that: The two ends of the outer side surface of the U-shaped lifting ring (4) are slidably connected to the opposite side surfaces of the two connecting plates (21).

5. The light towing cable device for underground coal mine excavation tunnel according to claim 1 is characterized in that: The structural dimensions of the connecting arm 1 (23) and the connecting arm 2 (24) are the same, and the hole distances between the pin holes arranged at the bottom ends of the connecting arm 1 (23) and the connecting arm 2 (24) and the through holes on the connecting plate (21) for inserting the connecting bolts (3) are the same.

6. The light towing cable device for underground coal mine excavation tunnel according to claim 1, characterized in that: The buffer damper (26) is arranged on the side of the first connecting arm (23) and the second connecting arm (24) facing away from the guide rail (1).

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