Fixing device of prop pulling winch

Abstract

The utility model relates to the field of winches, in particular to a prop pulling winch fixing device. A lifting groove is formed in the top of the fixed base, a lifting supporting plate is vertically and movably mounted in the lifting groove, a winch body is mounted at the top of the lifting supporting plate, moving wheels are mounted at the bottom of the lifting supporting plate, a horizontally-extending mounting hole is formed in the side of the lifting supporting plate, and a movable column is movably mounted in the mounting hole. The side wall of the lifting groove is provided with a through hole allowing the movable column to be inserted therein, when the lifting supporting plate drives the movable wheel to upwards retract into the lifting groove, the shifting rod is shifted to drive one end of the movable column to be inserted into the corresponding through hole, so that the height of the lifting supporting plate is locked, and the lifting supporting plate and the winch body cannot fall downwards even if the inclined rod is broken.

Description

Technical Field

[0001] This utility model relates to the field of winches, specifically to a winch fixing device for a return column winch. Background Technology

[0002] The column return winch is mainly used for traction in coal mines for column return and roof caving, relocation of integrated coal mining equipment, and installation of working faces. It can also be used for auxiliary work such as material transportation, chute movement, and conveyor head movement in roadways with slight slopes.

[0003] In the prior art, utility model patent application number CN202421241596.X discloses a coal mine winch for column return, including a fixed base and a winch base. The fixed base has an internal cavity, inside which a lead screw is rotatably mounted. Two symmetrically distributed drive blocks are arranged on the outer wall of the lead screw. A lifting support is located above the lead screw. Two symmetrically distributed first connecting plates and second connecting plates are rotatably mounted on the outer walls of both sides of the lifting support. The other ends of the first and second connecting plates are rotatably mounted on the outer walls of the two drive blocks. The winch base is welded to the top of the lifting support. Positioning rods are provided at the four corners of the bottom of the winch base, and positioning columns are provided at the bottom of the winch base. Rollers are provided on the lower end faces of the positioning columns. When the column return winch is moved to a designated position, the lead screw can be rotated in the cavity by a crank handle, causing the fixed base to move downwards and contact the ground. The fixed base supports the column return winch, preventing the rollers from contacting the ground and ensuring the stability of the column return winch.

[0004] The aforementioned return-column winch does not have a locking structure for the winch base. When the rollers leave the ground and the winch base is suspended in the air, if the first or second connecting plate at the bottom of the winch base is damaged or broken after prolonged use, the winch base will fall down, causing damage or malfunction to the winch. Utility Model Content

[0005] The purpose of this utility model is to provide a locking device for a return winch, which can lock the lifting pallet to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A winch fixing device includes a fixed base. The top of the fixed base has a lifting groove, within which a lifting support plate is vertically and movably installed. The top of the lifting support plate is fitted with a winch body, and the bottom of the lifting support plate has casters. The bottom of the fixed base has a through groove for the casters to extend out. The lifting groove contains an adjustment mechanism for raising and lowering the lifting support plate. A horizontally extending mounting hole is provided on the side of the lifting support plate, within which a movable column is movably installed. The side wall of the lifting groove has a through hole for the movable column to be inserted. When the movable column is inserted into the through hole, the casters retract upwards into the lifting groove.

[0008] As a further improvement, a vertically extending lever is fixedly installed on the top of the movable column, and a strip-shaped hole is provided on the top of the lifting plate for the lever to pass through. When the lever is moved along the strip-shaped hole, the movable column is moved along the mounting hole.

[0009] As a further improvement, the lever is provided with external threads, and a locking nut is screwed onto the lever located above the lifting plate.

[0010] As a further improvement, a pin is fixedly installed on the lever located above the locking nut to prevent the locking nut from falling off.

[0011] As a further improvement, the adjustment mechanism includes a mounting groove located at the bottom of the lifting plate. A horizontally extending slide rod is fixedly installed in the mounting groove. Two slide seats are slidably mounted on the slide rod. The two slide seats are respectively hinged to the inner wall of the lifting groove with diagonal rods. The diagonal rods on the two slide seats are symmetrically arranged in a figure-eight shape. The mounting groove is also provided with a driving component for driving the two slide seats to move closer or further apart.

[0012] As a further improvement, the driving component includes a forward and reverse threaded rod rotatably mounted in the mounting groove. The forward and reverse threaded rod is arranged parallel to the slide rod. The forward and reverse threaded rod located in the mounting groove has two external threads with opposite directions of rotation. The two slide blocks are respectively threaded to the two external threads of the forward and reverse threaded rod. The end of the forward and reverse threaded rod is provided with a light shaft. The light shaft at one end of the forward and reverse threaded rod extends to the outside of the fixed base and is fixedly mounted with a crank handle. The side wall of the lifting groove is provided with a strip-shaped slot for avoiding the end of the forward and reverse threaded rod that protrudes outside the fixed base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The drive unit moves the two slides closer to each other, and then the slides drive the lifting plate to descend relative to the fixed base via the inclined rod, so that the moving wheels support the ground and the bottom of the fixed base is suspended, thus facilitating the movement of the return column winch;

[0015] 2. The drive unit moves the two slides away from each other, and the slides then drive the lifting plate to rise relative to the fixed base through the diagonal bar. This allows the fixed base to support the ground and the moving wheels and lifting plate to be suspended in the air, thus providing stable support for the return winch. The return winch is less likely to deviate during use and has better stability.

[0016] 3. When the lifting pallet moves upward and retracts into the lifting slot, the lever is moved to insert one end of the movable column into the corresponding through hole, thereby locking the height of the lifting pallet. Then, the locking nut is tightened to make it press down against the lifting pallet, thereby restricting the movement of the lever and the movable column and preventing the movable column from accidentally dislodging from the through hole. Even if the diagonal bar breaks, the lifting pallet and the winch body will not fall downward, making it more stable and reliable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 Another structural diagram from a different perspective;

[0020] Figure 3 yes Figure 1 A cross-sectional view;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the lifting tray according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the movable column according to an embodiment of the present invention.

[0023] In the diagram: 1-Fixed base; 2-Lifting groove; 3-Lifting support plate; 4-Windlock body; 5-Moving wheel; 6-Through groove; 7-Mounting groove; 8-Slide rod; 9-Slide seat; 10-Diagonal rod; 11-Positive and negative threaded rod; 12-Handle; 13-Slotted opening; 14-Mounting hole; 15-Moving column; 16-Through hole; 17-Tuning rod; 18-Slotted hole; 19-Locking nut; 20-Pin rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown, the return column winch fixing device includes a rectangular fixed base 1, a rectangular lifting groove 2 on the top of the fixed base 1, a horizontally arranged lifting plate 3 vertically installed in the lifting groove 2, the shape of the lifting plate 3 matching the cross-sectional shape of the lifting groove 2, thereby improving the stability of the lifting plate 3 sliding vertically in the lifting groove 2, and a winch body 4 installed on the top of the lifting plate 3.

[0026] The bottom of the lifting pallet 3 is equipped with four movable wheels 5 at the four corners. The bottom of the fixed base 1 is provided with a through groove 6 for the movable wheels 5 to extend out. The through groove 6 corresponds to the movable wheels 5 one by one. The lifting groove 2 is provided with an adjustment mechanism for driving the lifting pallet 3 to lift.

[0027] The adjustment mechanism includes a mounting groove 7 located at the bottom of the lifting platform 3. The mounting groove 7 is a long strip extending back and forth in the length direction. A sliding rod 8 extending horizontally back and forth is fixedly installed in the mounting groove 7 by bolts. In this embodiment, two sliding rods 8 are symmetrically arranged on the left and right. Two sliding seats 9 are slidably installed on the two sliding rods 8 and are arranged in opposite directions. The two sliding seats 9 are respectively hinged to the inner wall of the lifting groove 2 with diagonal rods 10. In this embodiment, each sliding seat 9 is respectively hinged to the inner wall of the lifting groove 2 with two diagonal rods 10 arranged in opposite directions on the left and right. The diagonal rods 10 on the two sliding seats 9 are arranged in a figure-eight symmetrical arrangement. The mounting groove 7 is also provided with a driving component for driving the two sliding seats 9 to move closer or further apart.

[0028] Specifically, the drive unit moves the two slide blocks 9 closer together, and then the slide blocks 9, via the diagonal bar 10, lower the lifting plate 3 relative to the fixed base 1 until the lifting plate 3 drives the moving wheel 5 downward through the through groove 6 and extends out of the bottom of the fixed base 1. The moving wheel 5 supports the ground and suspends the bottom of the fixed base 1, thus facilitating the movement of the return winch. After the return winch is moved to the predetermined position, the drive unit moves the two slide blocks 9 away from each other, and then the slide blocks 9, via the diagonal bar 10, raise the lifting plate 3 relative to the fixed base 1 until the lifting plate 3 drives the moving wheel 5 upward through the through groove 6 and retracts into the lifting groove 2. The fixed base 1 supports the ground and suspends the moving wheel 5 and the lifting plate 3, thus providing stable support for the return winch and preventing it from shifting during use.

[0029] In this embodiment, the driving component includes a positive and negative threaded rod 11 located between two slide rods 8. The positive and negative threaded rod 11 is arranged parallel to the slide rods 8. Both ends of the positive and negative threaded rod 11 are provided with optical shafts. The optical shafts at both ends of the positive and negative threaded rod 11 are rotatably mounted on the side wall of the mounting groove 7 through bearings. The positive and negative threaded rods located in the mounting groove 7 are provided with two external threads with opposite directions of rotation. The two slide blocks 9 are respectively threaded to the two external threads of the positive and negative threaded rods. The optical shaft at the rear end of the positive and negative threaded rod 11 extends to the outside of the fixed base 1 and is fixedly mounted with a crank 12. The rear side wall of the lifting groove 2 is provided with a strip-shaped slot 13 for avoiding the rear end of the positive and negative threaded rod 11. The length of the strip-shaped slot 13 extends vertically and its upper end is open. By rotating the positive and negative threaded rod 11, the two slide blocks 9 can be driven to move closer or further away from each other, thereby driving the lifting plate 3 to move up and down in the lifting groove 2. While the lifting plate 3 is moving up and down, the rear end of the positive and negative threaded rod 11 moves up and down in the strip-shaped slot 13.

[0030] The lifting platform 3 has two mounting holes 14 arranged opposite each other at its front and rear ends. The mounting holes 14 extend horizontally front and rear. Movable columns 15 are movably installed in the mounting holes 14. The front and rear side walls of the lifting groove 2 are respectively provided with through holes 16 for the corresponding movable columns 15 to be inserted. When the movable column 15 is inserted into the through hole 16, the moving wheel 5 retracts upward into the lifting groove 2.

[0031] To facilitate adjustment of the movable column 15, a vertically extending lever 17 is embedded at the top of the movable column 15. The top of the lifting plate 3 is provided with a strip hole 18 through which the lever 17 passes. When the lever 17 is moved along the strip hole 18, the movable column 15 moves back and forth along the mounting hole 14.

[0032] When the adjusting mechanism drives the lifting pallet 3 to rise to the preset height relative to the fixed base 1, the lifting pallet 3 drives the moving wheel 5 to retract upward into the lifting groove 2. At the same time, the lifting pallet 3 drives the movable column 15 to move to be horizontally aligned with the corresponding through hole 16. Then, by moving the lever 17, one end of the movable column 15 is inserted into the corresponding through hole 16, thereby locking the height of the lifting pallet 3. Even if the inclined rod 10 breaks, the lifting pallet 3 and the winch body 4 will not fall downward.

[0033] The lever 17 has an external thread, and a locking nut 19 is screwed onto the lever 17 located above the lifting support plate 3. A handle is welded onto the locking nut 19 to facilitate its rotation. After inserting one end of the movable column 15 into the through hole 16, the locking nut 19 can be tightened to make it press against the lifting support plate 3 downwards, thereby restricting the movement of the lever 17 and the movable column 15 and preventing the movable column 15 from accidentally dislodging from the through hole 16, making it more stable and reliable.

[0034] In this embodiment, a pin 20 for preventing the locking nut 19 from falling off is embedded in the lever 17 located above the locking nut 19, and the pin 20 extends radially along the lever 17.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A winch fixing device for a return column, characterized in that: The device includes a fixed base, a lifting groove on the top of the fixed base, a lifting support plate vertically and movably installed in the lifting groove, a winch body installed on the top of the lifting support plate, and casters installed on the bottom of the lifting support plate. The bottom of the fixed base has a through groove for the casters to extend out, and the lifting groove has an adjustment mechanism for driving the lifting support plate to move up and down. The side of the lifting support plate has a horizontally extending mounting hole, and a movable column is movably installed in the mounting hole. The side wall of the lifting groove has a through hole for the movable column to be inserted. When the movable column is inserted into the through hole, the casters retract upward into the lifting groove.

2. The winch fixing device as described in claim 1, characterized in that: A vertically extending lever is fixedly installed on the top of the movable column, and a strip hole is provided on the top of the lifting plate for the lever to pass through. When the lever is moved along the strip hole, the movable column is moved along the mounting hole.

3. The winch fixing device as described in claim 2, characterized in that: The lever has an external thread, and a locking nut is screwed onto the lever located above the lifting plate.

4. The winch fixing device as described in claim 3, characterized in that: A pin is fixedly installed on the lever located above the locking nut to prevent the locking nut from falling off.

5. The winch fixing device as described in claim 1, characterized in that: The adjustment mechanism includes a mounting groove located at the bottom of the lifting plate. A horizontally extending slide rod is fixedly installed in the mounting groove. Two slide seats are slidably mounted on the slide rod. The two slide seats are respectively hinged to the inner wall of the lifting groove with diagonal rods. The diagonal rods on the two slide seats are symmetrically arranged in a figure-eight shape. The mounting groove is also provided with a driving component for driving the two slide seats to move closer or further apart.

6. The winch fixing device as described in claim 5, characterized in that: The driving component includes a forward and reverse threaded rod rotatably installed in the mounting groove. The forward and reverse threaded rod is arranged parallel to the slide rod. The forward and reverse threaded rod located in the mounting groove has two external threads with opposite directions. The two slide blocks are respectively threaded to the two external threads of the forward and reverse threaded rod. The end of the forward and reverse threaded rod is provided with an optical shaft. The optical shaft at one end of the forward and reverse threaded rod extends to the outside of the fixed base and is fixedly installed with a crank handle. The side wall of the lifting groove is provided with a strip-shaped slot to avoid the end of the forward and reverse threaded rod that protrudes outside the fixed base.

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