Crawling mechanism of mine draw shaft blockage dredging device

Abstract

The utility model provides a crawling mechanism of a mine draw shaft blockage dredging device, which belongs to the technical field of mining and is used for solving the problem of how to feed a dredging tool into a blocked part in a draw shaft when the draw shaft is blocked in the prior art. The crawling mechanism comprises two groups of crawling frames which are arranged back to back, wherein each crawling frame comprises a fixed ring, a movable ring, a telescopic part and a retracting and stretching part; the fixed rings of the two sets of crawling frames are fixedly connected to form a middle rack, and the movable rings of the two sets of crawling frames are located on the two sides of the middle rack correspondingly. The telescopic part is connected between the fixed ring and the movable ring and is used for adjusting the axial distance of the movable ring relative to the middle rack; the retracting and stretching part is connected to the periphery of the movable ring, and the radial distance between an abutting structure on the outer side of the retracting and stretching part and the movable ring is adjusted. Crawling is achieved through alternate action of the telescopic part and the stretching and retracting part, the problem of how to feed a dredging tool into a blocked part is solved, and the dredging efficiency and safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining, in particular to a crawling mechanism of a mine chute blockage dredging device. Background Art

[0002] A chute is a crucial facility in underground mining, primarily used for the vertical transportation of ore and waste rock. During the mining process, the ore or waste rock is loaded into the chute, where it then slides down the shaft wall under its own weight to the transport system below, enabling efficient transfer of the ore or waste rock. The presence of a chute significantly improves mining transportation efficiency and reduces transportation costs.

[0003] However, in practice, chutes often face blockage issues. Due to the varying shapes and sizes of ore and waste rock, these chutes can become blocked, preventing the ore or waste rock from flowing properly. This not only impacts normal mine production but can also pose a safety hazard.

[0004] Once a chute becomes clogged, timely unclogging becomes crucial. Unclogging a chute requires specialized equipment and techniques, and manually carrying equipment into the clogged area is dangerous. Therefore, a crawling device is needed that can carry unclogging tools into the chute to clean and address the clogged area, thereby restoring the chute's normal transportation function. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a crawling mechanism for a mine chute blockage dredging device, which is used to solve the problem in the prior art of how to send the dredging tool into the blocked part of the chute when the chute is blocked.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a crawling mechanism for a mine chute blockage dredging device, comprising two sets of back-to-back climbing frames, each of which comprises a fixed ring, a movable ring, a telescopic portion, and a retractable portion;

[0007] The fixed rings of the two groups of climbing frames are fixedly connected to form an intermediate frame, and the movable rings of the two groups of climbing frames are respectively located on both sides of the intermediate frame;

[0008] The telescopic portion is connected between the fixed ring and the movable ring to adjust the axial distance of the movable ring relative to the intermediate frame;

[0009] The retractable portion is connected to the outer periphery of the movable ring, and the radial distance between the outer abutting structure of the retractable portion and the movable ring is adjusted.

[0010] Optionally, the power source of the telescopic part is a first telescopic cylinder, and the shell and the telescopic shaft of the first telescopic cylinder are respectively connected to the fixed ring and the movable ring.

[0011] Optionally, the power source of the retracting and expanding portion is a second telescopic cylinder, and the housing and the telescopic shaft of the second telescopic cylinder are respectively connected to the movable ring and the abutting structure.

[0012] Optionally, the power source of the telescopic portion is a third telescopic cylinder, the housing of the third telescopic cylinder is connected to the fixed ring, and the telescopic axis of the third telescopic cylinder faces the movable ring;

[0013] The retracting and expanding portion includes a rotary power source, a nut seat, an abutting bracket, and a retracting and expanding bracket. The housing of the rotary power source is connected to the movable ring, and the rotating axis of the rotary power source faces the fixed ring.

[0014] The telescopic shaft of the third telescopic cylinder and the rotating shaft of the rotary power source are coaxially connected to form an integral whole;

[0015] A thread is provided on the rotating shaft of the rotating power source, the nut seat is threadedly matched with the rotating shaft, one end of the abutment bracket is hinged to the movable ring, and the other end is provided with an abutment structure, one end of the retractable bracket is hinged to the nut seat, and the other end is hinged to the abutment bracket.

[0016] Optionally, the cross-section of the telescopic shaft of the third telescopic cylinder is rectangular;

[0017] The end of the telescopic shaft of the third telescopic cylinder has a "T"-shaped disc-shaped protruding structure, and the end of the rotating shaft of the rotary power source has a matching concave structure. The protruding structure and the concave structure form a coaxial connection structure, connecting the telescopic shaft and the rotating shaft into a coaxial rod that can rotate with each other.

[0018] Optionally, the abutment structure is a block hinged to the end of the abutment bracket;

[0019] Alternatively, the abutment structure is an abutment wheel rotatably disposed at the end of the abutment bracket.

[0020] Optionally, the abutment wheel includes two friction wheels coaxially arranged on both sides of the abutment bracket.

[0021] Optionally, the abutment wheel includes a friction wheel and a ratchet wheel, which are coaxially arranged on both sides of the abutment bracket;

[0022] On one side of the ratchet, the retracting and expanding portion is further provided with a pawl and a push rod, the pawl is hinged to the retracting and expanding portion, and the push rod adjusts the angle of the pawl so that the pawl is engaged with or disengaged from the ratchet.

[0023] Optionally, the outer layer of the abutting structure is provided with a rubber pad layer.

[0024] Optionally, on the two groups of climbing frames, the directions of the ratchet teeth of the ratchets are symmetrical about the middle frame.

[0025] As described above, the crawling mechanism of the mine chute blockage dredging device of the present invention has at least the following beneficial effects:

[0026] Two sets of back-to-back crawling frames enable stable crawling and precise positioning within narrow chutes. The ingenious design of the telescopic and retracting sections not only enhances the flexibility of the crawling mechanism but also effectively solves the problem of inserting dredging tools into blocked areas, improving dredging efficiency and safety, and providing strong support for mine chute maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is an overall schematic diagram of the utility model.

[0028] Figure 2 Display of the utility model Figure 1 A partial enlarged schematic diagram of point A in the middle.

[0029] Figure 3 This is a schematic diagram of the coaxial connection between the telescopic shaft of the third telescopic cylinder and the rotating shaft of the rotary power source.

[0030] Among them: fixed ring 10, movable ring 11, telescopic part 2, third telescopic cylinder 20, retracting and expanding part 3, rotating power source 30, nut seat 31, abutment bracket 32, retracting and expanding bracket 33, friction wheel 34, ratchet 35, pawl 36, push rod 37, coaxial connection structure 2130. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] See also Figures 1 to 3 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0033] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0034] For this example, please refer to Figure 1 The present invention provides an embodiment of a crawling mechanism for a mine chute blockage dredging device, comprising two sets of back-to-back crawling frames, each comprising a fixed ring 10, a movable ring 11, a telescopic portion 2, and a retractable portion 3. The fixed rings 10 of the two sets of crawling frames are fixedly connected to form a middle frame, and the movable rings 11 of the two sets of crawling frames are located on either side of the middle frame. The telescopic portion 2 is connected between the fixed ring 10 and the movable ring 11 to adjust the axial distance of the movable ring 11 relative to the middle frame. The retractable portion 3 is connected to the outer periphery of the movable ring 11 to adjust the radial distance between the outer abutment structure of the retractable portion 3 and the movable ring 11. At least three sets of the retractable portions 3 are arranged equidistantly along the circumference of the fixed ring 10 to ensure stable support on the shaft wall.

[0035] In the above embodiment, the working principle of the crawling mechanism is:

[0036] Initially, the telescopic parts 2 of the two sets of climbing frames are extended, making the crawling mechanism have a larger length. The retractable parts 3 at both ends of the crawling mechanism are expanded, and the abutment structures of the retractable parts 3 abut against the wall of the chute, so that the crawling mechanism can be fixed in the chute;

[0037] In the first step, on one set of climbing frames of the crawling mechanism, the retracting and expanding part 3 is tightened to separate the abutment structure from the well wall; on the other set of climbing frames, the retracting and expanding part 3 is kept expanded and abutted and fixed against the well wall;

[0038] In the second step, the telescopic portion 2 of the crawling mechanism is retracted, shortening the overall length of the crawling mechanism. Since one set of the crawling frames of the crawling mechanism remains in contact with the wall of the chute, this side will remain stationary, while the other side will move along the axis of the chute.

[0039] In the third step, the retracted telescopic portion 2 opens and maintains contact with the wall of the chute. Then, the extended telescopic portion 2 contracts and detaches from the wall. The telescopic portion 2 of the crawling mechanism extends, lengthening the overall length of the crawling mechanism. Because one set of crawling frames of the crawling mechanism remains in contact with the wall of the chute, this side remains stationary, while the other side moves along the axis of the chute.

[0040] Step 4: Repeat the above process, allowing the crawler to creep along the chute's axis. Transport the tool used to clear the blockage to the blockage. The operator can select the specific device to use; it is not part of the crawler mechanism.

[0041] In some possible implementations, the tool used to clear the blockage is explosives. The crawling mechanism carries the explosives to the blockage, places the explosives there, and then leaves. The explosives are then remotely detonated to create an impact force, destroying the blockage structure, thereby achieving the purpose of clearing the blockage.

[0042] Furthermore, the power source of the telescopic section 2 is a first telescopic cylinder, whose housing and telescopic shaft are respectively connected to the fixed ring 10 and the movable ring 11. When the first telescopic cylinder is actuated, it changes the spacing between the fixed ring 10 and the movable ring 11, thereby achieving a peristaltic forward movement through the alternating expansion and contraction of the retractable section, which in turn presses against and releases the well wall.

[0043] In this embodiment, the power source for the retractable and expandable portion 3 is a second telescopic cylinder. The housing and telescopic shaft of the second telescopic cylinder are connected to the movable ring 11 and the abutment structure, respectively. The telescopic direction of the second telescopic cylinder is perpendicular to that of the first telescopic cylinder of the telescopic portion 2. That is, the first telescopic cylinder is along the axial direction of the chute, while the second telescopic cylinder is along the diameter of the chute. This allows the abutment structure at its end to abut against the chute wall when the second telescopic cylinder is extended, and to disengage from the chute wall when the second telescopic cylinder is retracted. This allows the abutment structures at both ends of the crawling mechanism to alternately abut and disengage from the chute wall, coordinating with the alternating extension and contraction of the telescopic portion 2 to achieve axial movement along the chute.

[0044] As an alternative to the above-mentioned embodiment, please refer to Figure 2 and Figure 3 The power source of the telescopic part 2 is the third telescopic cylinder 20. The shell of the third telescopic cylinder 20 is connected to the fixed ring 10, and the telescopic axis of the third telescopic cylinder 20 is directed toward the movable ring 11. The retracting part 3 includes a rotary power source 30, a nut seat 31, an abutment bracket 32 ​​and a retracting bracket 33. The shell of the rotary power source 30 is connected to the movable ring 11, and the rotating axis of the rotary power source 30 is directed toward the fixed ring 10.

[0045] The telescopic shaft of the third telescopic cylinder 20 and the rotating shaft of the rotary power source 30 are coaxially connected as one, and the connection adopts a rotational fit; a thread is provided on the rotating shaft of the rotary power source 30, and the nut seat 31 is threadedly matched with the rotating shaft. One end of the abutment bracket 32 ​​is hinged to the movable ring 11, and the other end is provided with an abutment structure. One end of the retractable bracket 33 is hinged to the nut seat 31, and the other end is hinged to the abutment bracket 32.

[0046] In the above embodiment, when the crawling mechanism needs to change its length in the axial direction, the third telescopic cylinder 20 is extended and retracted;

[0047] When the retracting and expanding part 3 on one side of the crawling mechanism needs to be retracted and expanded, the rotary power source 30 rotates, driving the nut seat 31 to slide along the axis, thereby pushing or pulling the abutment bracket 32 ​​to flip through the retracting and expanding bracket 33, so that the abutment structure at the end of the abutment bracket 32 ​​abuts or disengages from the chute wall.

[0048] In the above embodiment, the telescopic shaft of the third telescopic cylinder 20 and the rotating shaft of the rotary power source 30 are coaxially connected and integrally formed, with the connection being rotationally engaged. This prevents power from being transmitted to the telescopic shaft of the third telescopic cylinder 20 when the rotary power source 30 rotates. Even if power is transmitted, it is minimal, less than the power generated by friction at the connection between the two shafts. The structure of the third telescopic cylinder 20 resembles a syringe. Although the housing and telescopic shaft (piston rod) can rotate in addition to axial sliding, this connection minimizes the transmission of significant rotational power from the rotary power source 30 to the third telescopic cylinder 20, improving the reliability of the telescopic cylinder and preventing problems such as fluid leakage.

[0049] Furthermore, in order to further prevent the rotational power of the rotary power source 30 from being transmitted to the telescopic shaft of the third telescopic cylinder 20, as shown in FIG. Figure 3 As shown, the telescopic shaft of the third telescopic cylinder 20 has a rectangular cross-section (typically, the telescopic shaft of a telescopic cylinder has a circular cross-section). Consequently, the shaft exit hole at the shaft exit of the telescopic cylinder housing is also rectangular. The shaft exit hole and the telescopic shaft can only slide axially, preventing the telescopic rod from rotating. Although the telescopic shaft of the third telescopic cylinder 20 is coaxially connected to the rotating shaft of the rotary power source 30, when the rotating shaft of the rotary power source 30 rotates, it can only rotate relative to the telescopic shaft of the third telescopic cylinder 20 and does not drive the rotation of the third telescopic cylinder 20.

[0050] The end of the telescopic shaft of the third telescopic cylinder 20 has a "T"-shaped disc-shaped protruding structure, which means it has two stepped shafts with different diameters. The end of the rotating shaft of the rotary power source 30 has a matching concave structure. The protruding structure and the concave structure form a coaxial connection structure 2130, connecting the telescopic shaft and the rotating shaft into coaxial rods that can rotate with each other, maintaining circular rotation coordination while preventing axial displacement or even separation.

[0051] In this embodiment, the abutment structure is a block hinged to the end of the abutment bracket 32;

[0052] Alternatively, the abutment structure is an abutment wheel rotatably disposed at the end of the abutment bracket 32, such as Figure 1 shown.

[0053] Furthermore, the abutting wheel includes two friction wheels 34 coaxially arranged on both sides of the abutting bracket 32 ​​.

[0054] As a more preferred embodiment, the abutting wheel includes a friction wheel 34 and a ratchet wheel 35, which are coaxially arranged on both sides of the abutting bracket 32. Figure 2 As shown; on one side of the ratchet 35, the retracting portion 3 is also provided with a pawl 36 and a push rod 37. The pawl 36 is hinged to the retracting portion 3, and the push rod 37 adjusts the angle of the pawl 36, so that the pawl 36 is engaged in or disengaged from the ratchet 35.

[0055] In the above embodiment, the ratchet 35, the push rod 37 and the pawl 36 cooperate to lock the friction wheel 34, thereby increasing the abutment and fixing stability of the crawling mechanism and the chute wall when the friction wheel 34 is used as the abutment structure, and preventing the crawling mechanism from sliding down unexpectedly.

[0056] In this embodiment, the outer layer of the abutting structure is provided with a rubber cushion layer. The rubber cushion layer has a certain deformation capacity and a large friction coefficient, so the abutting effect is good and the abutment is more solid.

[0057] Combine Figure 1 and Figure 2 On both sets of crawling frames, the ratchet teeth of the ratchet wheels 35 are symmetrically oriented about the middle frame. As shown in the figure, in the above embodiment, the arrangement of the ratchet wheels 35 and pawls 36 can only restrict the rotation of the friction wheel 34 in a single direction. However, in actual use, it is uncertain which end of the crawling mechanism faces downward. In this embodiment, since the ratchet teeth of the ratchet wheels 35 are symmetrically oriented about the middle frame, the locking directions of the pawls 36 at the upper and lower ends on the ratchet wheels 35 are also symmetrical. The pawls 36 and ratchet wheels 35 at both ends can respectively lock the friction wheel 34 in their respective directions, thereby increasing the flexibility of the device during use, eliminating the need to distinguish between the upper and lower ends. When operating in a chute, the device has locking capability regardless of which end is facing downward.

[0058] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. The crawling mechanism of the mine chute blockage dredging device is characterized by: It comprises two sets of back-to-back climbing frames, each of which comprises a fixed ring (10), a movable ring (11), a telescopic portion (2) and a retractable portion (3); The two sets of fixed rings (10) of the climbing frames are fixedly connected to form an intermediate frame, and the two sets of movable rings (11) of the climbing frames are respectively located on both sides of the intermediate frame; The telescopic portion (2) is connected between the fixed ring (10) and the movable ring (11) to adjust the axial distance of the movable ring (11) relative to the intermediate frame; The retractable portion (3) is connected to the periphery of the movable ring (11) to adjust the radial distance between the outer abutment structure of the retractable portion (3) and the movable ring (11).

2. The crawling mechanism of the mine chute blockage dredging device according to claim 1, characterized in that: The power source of the telescopic part (2) is a first telescopic cylinder, and the housing and the telescopic shaft of the first telescopic cylinder are respectively connected to the fixed ring (10) and the movable ring (11).

3. The crawling mechanism of the mine chute blockage dredging device according to claim 2, characterized in that: The power source of the retracting and expanding part (3) is a second telescopic cylinder, and the housing and the telescopic shaft of the second telescopic cylinder are respectively connected to the movable ring (11) and the abutting structure.

4. The crawling mechanism of the mine chute blockage dredging device according to claim 1, characterized in that: The power source of the telescopic portion (2) is a third telescopic cylinder (20), the shell of the third telescopic cylinder (20) is connected to the fixed ring (10), and the telescopic axis of the third telescopic cylinder (20) faces the movable ring (11); The retracting and expanding portion (3) comprises a rotary power source (30), a nut seat (31), an abutting bracket (32) and a retracting and expanding bracket (33); the housing of the rotary power source (30) is connected to the movable ring (11), and the rotating axis of the rotary power source (30) faces the fixed ring (10); The telescopic shaft of the third telescopic cylinder (20) and the rotating shaft of the rotary power source (30) are coaxially connected to form an integral whole; The rotating shaft of the rotating power source (30) is provided with a thread, the nut seat (31) is engaged with the rotating shaft thread, one end of the abutment bracket (32) is hinged to the movable ring (11), and the other end is provided with an abutment structure, and one end of the retracting and expanding bracket (33) is hinged to the nut seat (31), and the other end is hinged to the abutment bracket (32).

5. The crawling mechanism of the mine chute blockage dredging device according to claim 4, characterized in that: The cross section of the telescopic shaft of the third telescopic cylinder (20) is rectangular; The end of the telescopic shaft of the third telescopic cylinder (20) has a "T"-shaped disc-shaped protruding structure, and the end of the rotating shaft of the rotary power source (30) has a matching concave structure. The protruding structure and the concave structure form a coaxial connection structure (2130), connecting the telescopic shaft and the rotating shaft into a coaxial rod that can rotate with each other.

6. The crawling mechanism of the mine chute blockage dredging device according to claim 4, characterized in that: The abutment structure is a block hinged to the end of the abutment bracket (32); Alternatively, the abutment structure is an abutment wheel rotatably arranged at the end of the abutment bracket (32).

7. The crawling mechanism of the mine chute blockage dredging device according to claim 6, characterized in that: The abutment wheel comprises two friction wheels (34) coaxially arranged on both sides of the abutment bracket (32).

8. The crawling mechanism of the mine chute blockage dredging device according to claim 6, characterized in that: The abutment wheel comprises a friction wheel (34) and a ratchet wheel (35), which are coaxially arranged on both sides of the abutment bracket (32); On one side of the ratchet (35), the retracting portion (3) is further provided with a pawl (36) and a push rod (37), wherein the pawl (36) is hinged to the retracting portion (3), and the push rod (37) adjusts the angle of the pawl (36) so as to allow the pawl (36) to engage with or disengage from the ratchet (35).

9. The crawling mechanism of the mine chute blockage clearing device according to claim 6, characterized in that: The outer layer of the abutting structure is provided with a rubber cushion layer.

10. The crawling mechanism of the mine chute blockage clearing device according to claim 8, characterized in that: On the two sets of climbing frames, the ratchet teeth directions of the ratchet wheels (35) are symmetrical about the middle frame.

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