Column pulling winch for coal mine

Abstract

The prop pulling-back winch for the coal mine comprises a fixing base and a winch base, a cavity is formed in the fixing base, a lead screw is rotationally installed in the cavity, two driving blocks which are symmetrically distributed are arranged on the outer wall of the lead screw, and a positioning base is fixedly installed in the middle of the cavity and located below the lead screw; a lifting base is arranged at the position, corresponding to the positioning base, above the lead screw. According to the prop pulling-back winch disclosed by the invention, the rollers can be adjusted to be below the prop pulling-back winch during movement, and the friction force between the prop pulling-back winch and the rail is reduced through movement of the rollers on the rail; the situation that the movement of the prop pulling winch is blocked due to the fact that the base of the prop pulling winch with the plane bottom directly slides on the rail to generate large friction resistance is avoided, the trouble that a steel wire rope pulling the prop pulling winch to move is prone to breakage due to the large movement resistance of the prop pulling winch is also avoided, time and labor are saved, and the practicability is high. And the prop pulling winch is convenient to move.

Description

Technical Field

[0001] The utility model relates to the technical field of column-returning winches, in particular to a column-returning winch for coal mines. Background Art

[0002] The column return winch, also known as the slow winch, is used for returning the columns and releasing the roof of the coal mining face in underground coal mines. It is a winch composed of an electric motor, a worm and worm gear reducer, an intermediate shaft, a rope drum, a base and other parts. The motor power is transmitted to the arc worm and worm wheel through a pair of gears. The small gear on the worm wheel shaft drives the large gear through the intermediate bridge gear to drive the drum to reel in the wire rope for work. In addition, due to the low height and light weight of the column return winch, it is particularly suitable for coal mining faces in thin coal seams and steeply inclined coal seams, as well as various coal mining faces to recover metal pillars that have sunk into the bottom plate or are buried by gangue. It is widely used in mechanized coal mining faces for the purpose of installing, recovering and pulling various equipment and spare parts.

[0003] However, as the coal mining process progresses, the column winch needs to change its position as the mining process progresses, and most of the existing column winches are moved by using the dispatching winch and the column winch to pull the column winch to move. However, since the base of the column winch is a plane, when the column winch is pulled to move, the friction between the base of the column winch and the rail will produce a large resistance, which not only increases the time for the column winch to move, but also easily causes the wire rope that pulls the column winch to move to break. Therefore, those skilled in the art provide a column winch for coal mines to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a column-retracting winch for coal mines to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A column-returning winch for coal mines comprises: a fixed seat and a winch base, a cavity is opened inside the fixed seat, a screw rod is rotatably installed inside the cavity, two symmetrically distributed driving blocks are arranged on the outer wall of the screw rod, and a positioning seat is fixedly installed at the middle position of the cavity and below the screw rod, a lifting seat is arranged above the screw rod and at a position corresponding to the positioning seat, and two first connecting plates and a second connecting plate which are symmetrically distributed are rotatably installed on the outer walls of both sides of the positioning seat and the lifting seat, and the other ends of the two first connecting plates and the second connecting plates are rotatably installed on the outer walls of both sides of the two driving blocks, respectively. The winch base is arranged inside the cavity and welded to the top of the lifting base, and positioning rods are arranged at the four corners of the bottom of the winch base, and positioning cylinders are arranged at positions inside the cavity corresponding to the positioning rods, the positioning rods are inserted into the interior of the positioning cylinder, and a top cover is arranged on the top of the fixed seat above the winch base, the top cover is snap-fitted and installed on the top of the fixed seat and pressed tightly against the upper end surface of the winch base, and a positioning column is arranged on one side of the positioning rod at the bottom of the winch base, and a roller is arranged on the lower end surface of the positioning column, and the roller can pass through the fixed seat and extend to the bottom thereof through the movement of the winch base.

[0007] Preferably, thread grooves are provided inside the two driving blocks, and the driving blocks are threadedly mounted on the outer wall of the screw rod through the thread grooves, and the threads inside the two thread grooves are in opposite directions.

[0008] Preferably, a groove is provided at the middle position of the lower end surface of the winch base, and the lifting seat is snap-fitted and installed inside the groove and welded to the winch base.

[0009] Preferably, a slot is provided inside the positioning cylinder, the positioning rod is inserted into the slot, and a through opening is provided at the bottom of the cavity on one side of the positioning cylinder, the roller extends to the bottom of the fixing seat through the through opening, and the length of the positioning column is greater than the length of the positioning cylinder.

[0010] Preferably, one end of the screw rod passes through the fixing seat and extends to the outside thereof, and a crank handle is provided at one end of the screw rod located outside the fixing seat.

[0011] Preferably, a rectangular through slot is provided in the middle of the top cover, and the top cover surrounds the outside of the motor and the rope drum on the top of the winch base through the rectangular through slot, and the end surface area of ​​the rectangular through slot is smaller than the end surface area of ​​the winch base.

[0012] Preferably, a plurality of limiting bolts are evenly arranged around the top cover, and the limiting bolts penetrate the top cover and are threadedly installed inside the fixing seat.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] By arranging the winch base in the fixed base, when the return column winch is pulled to move on the rail, the screw rod can be driven to rotate in the cavity through the crank handle, and the two driving blocks installed on it through the threaded groove can be driven to move, so that the two driving blocks are moved away from each other on the outer wall of the screw rod, and then the two displacing driving blocks drive the positioning seat and the lifting seat rotatably connected to them through the first connecting plate and the second connecting plate to move, so that the lifting seat pulls the winch base to move downward, and drives the roller installed under the winch base through the positioning column to contact the rail from the through opening, so that the roller in contact with the rail supports the winch base, and at the same time The moving positioning seat pulls the fixed seat to move upward outside the winch base, and the roller can be completely moved to the bottom of the fixed seat. When the return column winch is moved, the roller can be adjusted to its bottom and move on the rail through the roller, reducing the friction between the return column winch and the rail, avoiding the situation where the movement of the return column winch is hindered due to the large friction resistance caused by the base of the return column winch with a flat bottom sliding directly on the rail, and also avoiding the trouble of the steel wire rope pulling the movement of the return column winch being easily broken due to the large movement resistance of the return column winch, saving time and effort and facilitating the movement of the return column winch.

[0015] The two drive blocks are moved toward each other on the outer wall of the screw rod, and then the two displacing drive blocks drive the positioning seat and the lifting seat connected with the first connecting plate and the second connecting plate to be rotatably connected thereto to be displaced, so that the positioning seat pushes the fixed seat to move downward outside the winch base and contact the ground, and the fixed seat supports the return column winch. At the same time, the moving lifting seat lifts the winch base to move upward, and drives the roller installed under the winch base through the positioning column to move from the through opening to the cavity for storage, so that the roller is not allowed to contact the ground, thereby avoiding the situation that the return column winch in use is vibrated and drives the roller to move due to the contact between the roller and the ground, thereby ensuring the stability of the return column winch, and also avoiding the trouble of damage to the roller due to the vibration of the return column winch in use and driving the roller to vibrate on the ground, thereby realizing the protection of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a column retracting winch according to an embodiment of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of a winch base according to an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a fixing base according to an embodiment of the utility model;

[0019] Figure 4It is a schematic diagram of the connection between the positioning seat, the lifting seat and the screw rod according to an embodiment of the utility model;

[0020] Figure 5 It is a bottom schematic diagram of a winch base according to an embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the internal structure of the top cover according to an embodiment of the utility model.

[0022] In the figure: 1, fixing seat; 101, cavity; 102, through opening; 11, screw rod; 111, crank handle; 12, driving block; 121, threaded groove; 13, positioning seat; 14, lifting seat; 15, first connecting plate; 16, second connecting plate; 17, positioning cylinder; 171, slot; 18, top cover; 181, rectangular through groove; 19, limiting bolt; 2, winch base; 201, groove; 21, positioning rod; 22, positioning column; 23, roller. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are 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, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0024] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a cavity 101 is provided inside the fixed seat 1, a screw rod 11 is rotatably installed inside the cavity 101, two driving blocks 12 are symmetrically distributed on the outer wall of the screw rod 11, and thread grooves 121 are provided inside the two driving blocks 12, the driving blocks 12 are threadedly installed on the outer wall of the screw rod 11 through the thread grooves 121, a positioning seat 13 is fixedly installed at the middle position of the cavity 101 and below the screw rod 11, a lifting seat 14 is provided above the screw rod 11 at a position corresponding to the positioning seat 13, and two first connecting plates 15 and second connecting plates 16 that are symmetrically distributed are rotatably installed on the outer walls of the two sides of the positioning seat 13 and the lifting seat 14, respectively. The other end is rotatably mounted on the outer walls of both sides of the two driving blocks 12, the winch base 2 is arranged inside the cavity 101, and a groove 201 is opened at the middle position of the lower end surface of the winch base 2, the lifting seat 14 is snap-fitted and installed inside the groove 201 and welded to the winch base 2, and positioning rods 21 are arranged at the four corners of the bottom of the winch base 2, and a positioning cylinder 17 is arranged at a position corresponding to the positioning rod 21 inside the cavity 101, the positioning rod 21 is inserted into the positioning cylinder 17, and a positioning column 22 is arranged on one side of the positioning rod 21 at the bottom of the winch base 2, and a roller 23 is arranged on the lower end surface of the positioning column 22, and the roller 23 can pass through the fixed seat 1 and extend to the bottom thereof through the movement of the winch base 2.

[0025] In one embodiment, when the winch is pulled back to move on the rail, the screw rod 11 can be driven to rotate in the cavity 101 by the crank 111, and the two driving blocks 12 installed thereon through the threaded groove 121 can be driven to move, so that the two driving blocks 12 are moved away from each other on the outer wall of the screw rod 11, and then the two displacing driving blocks 12 drive the positioning seat 13 and the lifting seat 14 rotatably connected thereto through the first connecting plate 15 and the second connecting plate 16 to move, so that the lifting seat 14 pulls the winch base 2 to move downward in the cavity 101, and drives the roller 23 installed under the winch base 2 through the positioning column 22 to contact the rail from the through opening 102, so that the roller in contact with the rail The wheel 23 supports the winch base 2. At the same time, the moving positioning seat 13 pulls the fixed seat 1 to move upward outside the winch base 2, and completely moves the roller 23 to the bottom of the fixed seat 1. When moving the return column winch, the roller 23 can be adjusted to its bottom and move on the rail through the roller 23, thereby reducing the friction between the return column winch and the rail. This avoids the situation where the movement of the return column winch is hindered due to the large friction resistance caused by the base of the return column winch with a flat bottom sliding directly on the rail. It also avoids the trouble of the steel wire rope that pulls the return column winch to break easily due to the large movement resistance of the return column winch, which saves time and effort and facilitates the movement of the return column winch.

[0026] In one embodiment, when the column return winch is moved to a specified position for use, the screw rod 11 can be driven to rotate in the cavity 101 by the crank 111, and the two driving blocks 12 installed thereon through the threaded groove 121 can be driven to move, so that the two driving blocks 12 are close to each other on the outer wall of the screw rod 11, and then the two displaced driving blocks 12 drive the positioning seat 13 and the lifting seat 14 rotatably connected to them through the first connecting plate 15 and the second connecting plate 16 to move, so that the positioning seat 13 pushes the fixing seat 1 to move downward outside the winch base 2 and contact the ground, and the fixing seat 1 controls the column return winch. The vehicle is supported, and at the same time, the moving lifting seat 14 lifts the winch base 2 to move upward, and drives the roller 23 installed under the winch base 2 through the positioning column 22 to move from the through opening 102 to the cavity 101 for storage, so that the roller 23 is not allowed to contact the ground, thereby avoiding the situation in which the return column winch in use vibrates and drives the roller 23 to move due to the contact between the roller 23 and the ground, thereby ensuring the stability of the return column winch, and also avoiding the trouble of damage to the roller 23 due to the vibration of the return column winch in use and driving the roller 23 to vibrate on the ground, thereby realizing the protection of the roller 23.

[0027] In one embodiment, when the position of the winch base 2 is adjusted in the fixed seat 1, since the positioning rods 21 installed at the four corners of the bottom of the winch base 2 are inserted into the positioning cylinders 17 through the slots 171, the winch base 2 can slide up and down in the cavity 101 through the cooperation of the four positioning cylinders 17 and the positioning rods 21, thereby avoiding the winch base 2 from shaking in the cavity 101 and ensuring the stability of the winch base 2.

[0028] Combination Figure 1 and Figure 6 As shown, a top cover 18 is provided on the top of the fixed seat 1 above the winch base 2, and a rectangular through groove 181 is provided in the middle position of the top cover 18. The top cover 18 surrounds the outside of the motor and the rope drum on the top of the winch base 2 through the rectangular through groove 181, and the end surface area of ​​the rectangular through groove 181 is smaller than the end surface area of ​​the winch base 2. A plurality of limiting bolts 19 are evenly arranged around the top cover 18, and the limiting bolts 19 pass through the top cover 18 and are threadedly installed inside the fixed seat 1.

[0029] In one embodiment, when the winch base 2 is installed in the fixed base 1, the position of the lifting seat 14 can be adjusted by the screw rod 11 first, the lifting seat 14 can be moved to the top of the fixed base 1, and then the winch base 2 can be clamped on the top of the lifting seat 14 through the groove 201, and the lifting seat 14 and the winch base 2 are welded, and then the lifting seat 14 is moved to the inside of the fixed base 1 through the screw rod 11, and the winch base 2 welded on the top of the lifting seat 14 is driven to move into the cavity 101, so that the positioning rod 21 is inserted into the slot 171 of the positioning cylinder 17, and then the top cover 18 is clamped on the top of the fixed base 1 through the rectangular through groove 181, and finally, the limit screw is screwed. The top cover 18 is fixed to the top of the fixing seat 1 by means of the bolts 19, thereby completing the assembly of the winch base 2 and the fixing seat 1. The top cover 18 can be pressed tightly against the top of the winch base 2 to limit its position, thereby avoiding the situation in which the height of the return column winch is too high and affects its use due to its separation from the cavity 101 when adjusting the position of the winch base 2. Moreover, when the winch base 2 is welded to the lifting seat 14, the winch base 2 can be limited by the cooperation of the groove 201 and the lifting seat 14, thereby avoiding the trouble of the winch base 2 interfering with the fixing seat 1 and being unable to enter the cavity 101 due to the position deviation of the winch base 2, thereby ensuring the use of the fixing seat 1 and the return column winch.

[0030] The working principle of the utility model is as follows: when adjusting the position of the return column winch, the screw rod 11 can be driven to rotate in the cavity 101 by the crank handle 111, and the two driving blocks 12 installed thereon through the threaded groove 121 can be driven to move, so that the two driving blocks 12 are moved away from each other on the outer wall of the screw rod 11, and then the two displaced driving blocks 12 drive the positioning seat 13 and the lifting seat 14 rotatably connected thereto through the first connecting plate 15 and the second connecting plate 16 to move, so that the lifting seat 14 pulls the winch base 2 to move downward in the cavity 101, and drives the roller 23 installed under the winch base 2 through the positioning column 22 to contact the rail from the through opening 102, so that the roller in contact with the rail The wheel 23 supports the winch base 2. At the same time, the moving positioning seat 13 pulls the fixed seat 1 to move upward outside the winch base 2, and completely moves the roller 23 to the bottom of the fixed seat 1. When moving the return column winch, the roller 23 can be adjusted to its bottom and move on the rail through the roller 23, thereby reducing the friction between the return column winch and the rail. This avoids the situation where the movement of the return column winch is hindered due to the large friction resistance caused by the base of the return column winch with a flat bottom sliding directly on the rail. It also avoids the trouble of the steel wire rope that pulls the return column winch to break easily due to the large movement resistance of the return column winch, which saves time and effort and facilitates the movement of the return column winch.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A column-returning winch for coal mines, comprising: A fixed seat (1) and a winch base (2), characterized in that a cavity (101) is provided inside the fixed seat (1), a screw rod (11) is rotatably installed inside the cavity (101), two symmetrically distributed driving blocks (12) are arranged on the outer wall of the screw rod (11), and a positioning seat (13) is fixedly installed at the middle position of the cavity (101) and below the screw rod (11), a lifting seat (14) is arranged above the screw rod (11) at a position corresponding to the positioning seat (13), and two first connecting plates (15) and a second connecting plate (16) are rotatably installed on the outer walls of both sides of the positioning seat (13) and the lifting seat (14), and the other ends of the two first connecting plates (15) and the second connecting plates (16) are rotatably installed on the outer walls of both sides of the two driving blocks (12), and the winch base (2) is arranged at the middle position of the cavity (101) and below the screw rod (11), a lifting seat (14) is arranged above the screw rod (11) and at a position corresponding to the positioning seat (13), and two first connecting plates (15) and a second connecting plate (16) are symmetrically distributed on the outer walls of both sides of the positioning seat (13) and the lifting seat (14), respectively. The interior of the cavity (101) is welded to the top of the lifting seat (14), and positioning rods (21) are provided at the four corners of the bottom of the winch base (2). A positioning cylinder (17) is provided at a position corresponding to the positioning rod (21) in the interior of the cavity (101), and the positioning rod (21) is inserted into the interior of the positioning cylinder (17). The top of the fixed seat (1) is located above the winch base (2) and is provided with a top cover (18). The top cover (18) is snap-fitted and installed on the top of the fixed seat (1) and is tightly pressed against the upper end surface of the winch base (2). The bottom of the winch base (2) is located on one side of the positioning rod (21) and is provided with a positioning column (22). The lower end surface of the positioning column (22) is provided with a roller (23), and the roller (23) can pass through the fixed seat (1) and extend to the bottom thereof through the movement of the winch base (2).

2. A column-returning winch for coal mines according to claim 1, characterized in that: The two drive blocks (12) are each provided with a thread groove (121) inside, and the drive block (12) is threadedly mounted on the outer wall of the screw rod (11) through the thread groove (121), and the thread directions inside the two thread grooves (121) are opposite.

3. A coal mine retracting winch according to claim 1, characterized in that: A groove (201) is provided at the middle position of the lower end surface of the winch base (2), and the lifting seat (14) is snap-fitted and installed inside the groove (201) and welded to the winch base (2).

4. A coal mine retractable winch according to claim 1, characterized in that: The positioning cylinder (17) has a slot (171) formed inside, the positioning rod (21) is inserted into the slot (171), and a through opening (102) is formed at the bottom of the cavity (101) on one side of the positioning cylinder (17), the roller (23) extends through the through opening (102) to the bottom of the fixing seat (1), and the length of the positioning column (22) is greater than the length of the positioning cylinder (17).

5. A coal mine retractable winch according to claim 1, characterized in that: One end of the screw rod (11) passes through the fixing seat (1) and extends to the outside thereof, and a crank handle (111) is provided at one end of the screw rod (11) located outside the fixing seat (1).

6. A column-retracting winch for coal mines according to claim 1, characterized in that: A rectangular through slot (181) is provided at the middle position of the top cover (18), and the top cover (18) surrounds the outside of the motor and the rope drum at the top of the winch base (2) through the rectangular through slot (181), and the end surface area of ​​the rectangular through slot (181) is smaller than the end surface area of ​​the winch base (2).

7. A column-retracting winch for coal mines according to claim 1, characterized in that: A plurality of limiting bolts (19) are evenly arranged around the top cover (18), and the limiting bolts (19) penetrate the top cover (18) and are threadedly mounted inside the fixing seat (1).

Images