A telescopic self-moving tail guard fence

Abstract

The utility model relates to the technical field of guardrails, and particularly relates to a telescopic self-moving tail guardrail, which comprises square steel fixed to the frame of a self-moving tail; the top of the square steel is fixed with a cross column; one side of the square steel away from the folding fence is fixed with a folding fence capable of moving along the cross column; one side of the cross column close to the self-moving machine is provided with a horizontal rod; the outer ring of the middle part of the horizontal rod is wound with a blocking piece capable of covering and shielding the folding fence; one end of the blocking piece wound on the outer ring of the horizontal rod can freely droop; the folding fence blocks the approach of the staff, and the blocking piece blocks the flying coal pieces, thereby effectively avoiding the injury of the staff caused by the belt winding and the injury of the staff caused by the flying coal pieces when the staff works near the self-moving tail; furthermore, the real-time guard of the staff is reduced, and the safety of the staff is ensured.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, specifically a retractable self-moving tail guardrail. Background Technology

[0002] During coal mining, working face roadways are set up in the mine tunnels. There are generally two working face roadways: a transport roadway and a return air roadway. The transport roadway is equipped with a belt conveyor to transport coal out of the working face. At the same time, the transport roadway is used for air intake, while the return air roadway is used for air exhaust. A self-moving tail section is set up near the coal mining face end of the transport roadway. It is used for adjusting the belt deviation, adjusting the height, correcting the direction of the transfer machine, and moving forward on its own to ensure smooth transfer at the mining face.

[0003] However, because the self-propelled tail section and the conveyor belt are set along the transport roadway, only the distance to the safety exit remains on both sides of the roadway. Due to the narrow space, workers need to be assigned to the self-propelled tail section to keep an eye on things during the operation of the self-propelled tail section and the conveyor belt, in order to prevent workers from being caught in the conveyor belt and getting injured, as well as from being hit by flying coal blocks.

[0004] Therefore, a retractable self-moving tail guardrail is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The retractable self-propelled machine tail guardrail of this utility model includes a square steel fixed to the frame of the self-propelled machine tail; a horizontal column is fixed to the top of the square steel; a folding fence that can move along the horizontal column is fixed to the square steel; a crossbar is provided on the side of the horizontal column near the self-propelled machine; an obstruction member that can cover and block the folding fence is wrapped around the middle outer ring of the crossbar; one end of the obstruction member wrapped around the outer ring of the crossbar can hang down freely.

[0007] Preferably, an H-shaped carriage is rotatably mounted on the hinge shaft at the top of the folding fence; a pressure plate is bolted to the top surface of the carriage; the carriage and the pressure plate are slidably sleeved on the outside of the crossbar.

[0008] Preferably, a hook is rotatably mounted on the hinge axis at the center of the side of the folding fence away from the barrier; a plurality of the hooks are used for hanging cables.

[0009] Preferably, a fixed seat is fixedly connected to the end of the horizontal column away from the square steel; a rotating block is rotatably mounted on the side of the fixed seat away from the blocking member; and a support column for supporting the horizontal column is fixedly connected to the bottom of the rotating block.

[0010] Preferably, a stop block is bolted to the side of the fixed base near the rotating block and the side away from the square steel; a slot matching the stop block is provided on the side of the rotating block.

[0011] Preferably, both the square steel and the fixed base are fixedly connected to a bracket on the side near the barrier; the two ends of the crossbar are respectively hung on the two brackets; a sleeve for winding the barrier is rotatably installed in the middle of the crossbar; and a counterweight is fixedly connected to the bottom of the barrier.

[0012] Preferably, both ends of the crossbar are provided with locking blocks that engage with the hanger.

[0013] Preferably, the top surface of the card block is provided with a crossbeam that can be pressed down; the bottom of the crossbeam is provided with a rubber strip for squeezing the top of the sleeve rod.

[0014] The advantages of this utility model are:

[0015] 1. The retractable self-propelled machine tail guardrail of this utility model, by setting up horizontal posts, folding fences and blocking components; the folding fences prevent workers from approaching, and the blocking components block flying coal pieces, thereby effectively preventing workers from being caught in the conveyor belt and injured by flying coal pieces when working near the tail of the self-propelled machine; thus, it not only reduces the need for real-time monitoring by workers, but also ensures the safety of workers.

[0016] 2. The retractable self-moving tail guardrail of this utility model comprises a fixed base, a rotating block, a hollow column, a sliding column, a positioning through hole, a pin, and a base plate. Rotating the rotating block and the supporting column causes the supporting column to rotate to a vertically downward position, pulling out the pin inside the positioning through hole, allowing the sliding column to slide downwards from the inside of the hollow column, so that the base plate contacts the ground. The pin is then inserted into the positioning through hole to fix and lock the hollow column and the sliding column. Anchor pins are installed in the threaded holes of the base plate according to actual needs. The supporting column supports the horizontal column, thus preventing deformation and bending of the horizontal column, improving the stability and safety of the unfolded folding fence. 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 perspective view of the present utility model;

[0019] Figure 2 This is a perspective view of the slide and pressure plate in this utility model;

[0020] Figure 3 This is a perspective view of the fixed base and support column in this utility model;

[0021] Figure 4 This is an exploded view of the fixing base in this utility model;

[0022] Figure 5 This is a structural diagram of the end of the crossbar in this utility model;

[0023] Figure 6 This is a perspective view of the hanging bracket in this utility model.

[0024] In the diagram: 1. Square steel; 2. Horizontal column; 3. Folding fence; 4. Barrier component; 5. Slide; 6. Pressure plate; 7. Hook; 8. Fixed seat; 9. Rotating block; 10. Support column; 11. Clamping block; 12. Stop block; 13. Slot; 14. Hanger; 15. Horizontal bar; 16. Sleeve rod; 17. Counterweight bar; 18. Clamping block; 19. Crossbeam; 20. Rubber strip; 21. Screw; 22. Spring; 101. Hollow column; 102. Sliding column; 103. Positioning through hole; 104. Pin; 105. Base plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 scope of protection of the present utility model.

[0026] like Figure 1 As shown, a retractable self-propelled vehicle tail guardrail includes a square steel 1 fixed to the frame of the self-propelled vehicle tail; a horizontal post 2 is fixed to the top of the square steel 1; a folding fence 3 that can move along the horizontal post 2 is fixed to the square steel 1; a crossbar 15 is provided on the side of the horizontal post 2 near the self-propelled vehicle; a blocking member 4 that can cover and block the folding fence 3 is wound around the outer ring of the middle part of the crossbar 15; one end of the blocking member 4 that is wound around the outer ring of the crossbar 15 can hang down freely.

[0027] In practice, the square steel 1 is installed and fixed to the rear frame of the self-propelled machine by bolts or welding; the folding fence 3 is composed of multiple steel pipes and hinge shafts. The multiple steel pipes are arranged in two parallel rows and intersected between the two rows. The intersection of the two steel pipes is hinged by the hinge shaft, so that the folding fence 3 can be pushed and pulled to unfold and folded to retract; the barrier 4 can be made of woven mesh cloth, plastic film or engineering fabric, etc., which can cover the folding fence 3 and intercept falling coal pieces;

[0028] When the self-propelled transporter is working and carrying coal, the folding fence 3 is pulled out to isolate the side of the self-propelled transporter and prevent workers from approaching. At the same time, the barrier 4 is unfolded from the crossbar 15 and hangs freely. The barrier 4 is located on the side of the folding fence 3 closest to the self-propelled transporter. When the self-propelled transporter is carrying coal, any flying coal can be stopped by the barrier 4, preventing the coal from passing through the unfolded folding fence 3. Furthermore, when coal hits the barrier 4, the folding fence 3 will block the barrier 4, reducing the chance of the barrier 4 being thrown up by the coal and more effectively intercepting and blocking flying coal. After the self-propelled transporter stops, the folding fence 3 is pushed to fold and retract, and the barrier 4 is rolled up to facilitate the passage of workers.

[0029] By unfolding the folding fence 3, the tail of the self-propelled machine is isolated, preventing workers from getting close and effectively avoiding injury caused by the conveyor belt when working near the tail of the self-propelled machine; the blocking component 4 blocks flying coal pieces, preventing workers from being injured by flying coal pieces; thus, not only is the real-time monitoring of workers reduced, but the safety of workers is also ensured.

[0030] like Figures 1 to 2 As shown, an H-shaped slide 5 is rotatably mounted on the hinge shaft at the top of the folding fence 3; a pressure plate 6 is bolted to the top surface of the slide 5; the slide 5 and the pressure plate 6 are slidably sleeved on the outside of the cross post 2.

[0031] In practice, the bottom of the slide 5 is provided with a groove that allows the folding fence 3 to move; the top of the slide 5 and the bottom of the pressure plate 6 are both provided with semi-circular grooves that match the crossbar 2.

[0032] When the folding fence 3 is folded, retracted, and unfolded, it drives the slide 5 and the pressure plate 6 to slide along the cross post 2, allowing the folding fence 3 to slide along the cross post 2. The cross post 2 serves as a guide for the folding fence 3. At the same time, the cross post 2 also serves as a suspension for the folding fence 3. Since there may be coal blocks and other debris on the ground of the transport roadway, the bottom of the folding fence 3 may touch the ground, which could easily cause the folding fence 3 to move slowly. Therefore, the cross post 2 is used to lift the folding fence 3 as a whole off the ground, thereby improving the smoothness and convenience of the movement of the folding fence 3.

[0033] like Figure 1 As shown, a hook 7 is rotatably mounted on the hinge shaft at the center of the side of the folding fence 3 away from the barrier 4; a plurality of hooks 7 are used for hanging cables;

[0034] In specific implementation, on the side of the folding fence 3 away from the barrier 4, a hook 7 is rotatably installed on a hinge shaft of the same height via a bearing. Since the rotational displacement of the hook 7 is located at the top, the hook 7 can always remain vertical, that is, the hook 7 will not be deflected by the contraction and expansion of the folding fence 3.

[0035] By using hooks 7 to hang cables and other wires, the random placement of cables is avoided, thus preventing the cables from affecting the contraction and expansion of the folding fence 3.

[0036] like Figure 1 , Figures 3 to 4 As shown, a fixed seat 8 is fixedly connected to the end of the horizontal column 2 away from the square steel 1; a rotating block 9 is rotatably installed on the side of the fixed seat 8 away from the blocking member 4; a support column 10 for supporting the horizontal column 2 is fixedly connected to the bottom of the rotating block 9.

[0037] In specific implementation, the bottom surface of the fixed base 8 is provided with a slot; a clamping block 11 is bolted inside the bottom slot of the fixed base 8; the clamping block 11 and the fixed base 8 clamp and lock the outer wall of the end of the horizontal column 2; the support column 10 includes a hollow column 101 fixed to the bottom of the rotating block 9, and a sliding column 102 is slidably installed inside the hollow column 101; a plurality of positioning through holes 103 are evenly provided on the hollow column 101 and the sliding column 102; a pin 104 for fixing and connecting the hollow column 101 and the sliding column 102 is inserted into the positioning through hole 103; a base plate 105 is fixed to the bottom end of the sliding column 102, and threaded holes for installing anchors are provided at the four corners of the base plate 105;

[0038] When the folding fence 3 is unfolded, the end of the horizontal column 2 furthest from the square steel 1 will be subjected to downward force. At this time, the rotating block 9 and the support column 10 are rotated so that the support column 10 rotates to a vertical downward position, and the pin 104 inside the positioning through hole 103 is pulled out, so that the sliding column 102 slides down from the inside of the hollow column 101, so that the base plate 105 contacts the ground. Then the pin 104 is inserted into the inside of the positioning through hole 103 to fix and lock the hollow column 101 and the sliding column 102. And according to actual needs, the anchor is installed in the threaded hole of the base plate 105. The support column 10 supports the horizontal column 2, thereby preventing the horizontal column 2 from deforming and bending, and improving the stability and safety of unfolding the folding fence 3.

[0039] like Figures 3 to 4As shown, a stop block 12 is bolted to the side of the fixed base 8 that is close to the rotating block 9 and away from the square steel 1; a slot 13 matching the stop block 12 is provided on the side of the rotating block 9.

[0040] In practice, the stop block 12 is fixedly installed to the fixed seat 8 by bolts. An inclined protrusion is fixed to the side of the stop block 12 near the rotating block 9, and the inclination direction of the protrusion is tangent to the rotation direction of the rotating block 9. The opening angle of the slot 13 is also tangent to the rotation direction of the rotating block 9.

[0041] By matching and engaging the stop block 12 with the slot 13 on the side of the rotating block 9, when the support column 10 rotates to a vertically downward position, the stop block 12 engages with the slot 13, fixing the rotating block 9 and keeping the support column 10 vertical. This prevents the support column 10 from rotating and causing the support for the horizontal column 2 to fail. Since the protrusion of the stop block 12 and the opening direction of the slot 13 are tangent to the rotation direction of the rotating block 9, the slot 13 and the stop block 12 can only be engaged and disengaged when the rotating block 9 rotates, further preventing the support column 10 from shifting.

[0042] like Figure 1 , Figures 5 to 6 As shown, both the square steel 1 and the fixed base 8 are fixedly connected to the side of the barrier 4 with a hanging bracket 14; the two ends of the crossbar 15 are respectively hung on the two hanging brackets 14; a sleeve rod 16 for winding the barrier 4 is rotatably installed in the middle of the crossbar 15; and a counterweight strip 17 is fixedly connected to the bottom of the barrier 4.

[0043] In practice, the counterweight 17 can be fixed to the top horizontal column 2 or horizontal bar 15, such as by bolting, or the counterweight 17 can be replaced by a magnet so that it can attract the horizontal column 2 or horizontal bar 15.

[0044] When releasing the blocking component 4, the counterweight 17 is removed from the horizontal column 2 or the horizontal bar 15 and released. The counterweight 17 drives the blocking component 4 to move downward, causing the sleeve 16 to rotate and release the blocking component 4. When the counterweight 17 falls to the ground, the blocking component 4 stops releasing, thus completing the deployment of the blocking component 4.

[0045] When retracting the blocking component 4, rotate the sleeve rod 16 to wind the blocking component 4 onto the sleeve rod 16, and fix the counterweight 17 to the top horizontal column 2 or horizontal bar 15, thereby realizing the winding operation of the blocking component 4.

[0046] like Figures 5 to 6 As shown, both ends of the crossbar 15 are provided with locking blocks 18 that engage with the hanging bracket 14;

[0047] In practice, the inner side of the bracket 14 engages with the outer wall of the locking block 18, allowing the locking block 18 to be inserted into the bracket 14 and preventing it from rotating. Both ends of the crossbar 15 are threaded, and the crossbar 15 slides through the locking block 18. Both ends of the crossbar 15 are threaded with a pair of nuts, located on both sides of the locking block 18. The nuts on both sides of the locking block 18, in conjunction with the threads of the crossbar 15, secure the locking block 18 to the end of the crossbar 15. This not only prevents the crossbar 15 from rotating with the sleeve rod 16, thus avoiding its detachment and fall, but also allows for the removal and replacement of the crossbar 15 and sleeve rod 16, and the installation of the blocking component 4.

[0048] like Figures 5 to 6 As shown, the top surface of the locking block 18 is provided with a crossbeam 19 that can be pressed down; the bottom of the crossbeam 19 is provided with a rubber strip 20 for pressing the top of the sleeve rod 16.

[0049] In specific implementation, a protruding strip is fixed to the bottom surface of the crossbeam 19, and guide grooves are provided at the bottom and on both sides of the protruding strip; a rubber strip 20 is provided on the outer side of the bottom of the protruding strip, and a guide strip matching the guide groove is provided on the inner side of the rubber strip 20; a screw 21 penetrating the crossbeam 19 is fixed to the top surface of the locking block 18; a nut is threaded on the top of the screw 21; and a spring 22 is sleeved on the outer ring of the screw 21.

[0050] When the blocking member 4 is unfolded, the nut at the top of the screw 21 is rotated to press down the crossbeam 19, which compresses the spring 22. When the crossbeam 19 is pressed down, it pushes the rubber strip 20 to press down the blocking member 4 on the outer ring of the sleeve rod 16, pressing the sleeve rod 16 and the blocking member 4 tightly and fixing them, thereby avoiding excessive release of the blocking member 4.

[0051] The sleeve rod 16 has radial baffles at both ends to block the blocking component 4 and prevent the blocking component 4 from shifting when it is released and retracted; the radial baffles can prevent the downward pressure on the crossbeam 19 and the rubber strip 20 from being blocked.

[0052] Working principle: When the self-moving machine is started, rotating block 9 and support column 10 are rotated, so that support column 10 rotates to a vertically downward position, pulling out pin 104 inside positioning through hole 103, so that sliding column 102 slides down from inside hollow column 101, so that base plate 105 contacts the ground. Then, pin 104 is inserted into the positioning through hole 103 to fix and lock hollow column 101 and sliding column 102. And, according to actual needs, anchor nails are installed in the threaded holes of base plate 105; support column 10 supports cross column 2.

[0053] Pulling the folding fence 3 unfolds it, causing the slide 5 and pressure plate 6 to slide along the cross post 2, allowing the folding fence 3 to slide along the cross post 2. The cross post 2 guides the folding fence 3. At the same time, the cross post 2 hangs the folding fence 3. Since there may be coal blocks and other debris on the ground of the transport roadway, the bottom of the folding fence 3 may contact the ground, which may cause the folding fence 3 to move slowly.

[0054] Next, rotate the nut on the screw 21, the spring 22 returns to its original position, pushing the crossbeam 19 and rubber strip 20 upward, loosening the sleeve rod 16 and the blocking member 4, and removing the counterweight 17 from the cross post 2 or cross bar 15. The counterweight 17 drives the blocking member 4 downward, causing the sleeve rod 16 to rotate and release the blocking member 4. When the counterweight 17 falls to the ground, the blocking member 4 stops releasing. At the same time, rotate the nut on the screw 21 in the opposite direction, pressing down the crossbeam 19, causing the spring 22 to compress. When the crossbeam 19 presses down, it pushes the rubber strip 20 down to press down the blocking member 4 on the outer ring of the sleeve rod 16, pressing the sleeve rod 16 and the blocking member 4 tightly and fixed.

[0055] By using the folding fence 3 to block workers from approaching and the barrier 4 to block flying coal chunks, workers are effectively prevented from being caught in the conveyor belt or being hit by flying coal chunks when working near the tail of the self-propelled machine. This not only reduces the need for real-time monitoring by workers but also ensures their safety.

[0056] 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 illustrative of the principles of this 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.

Claims

1. A retractable, self-propelled tail guardrail, characterized in that: The system includes a square steel frame fixed to the tail of the self-propelled machine; a crossbar fixed to the top of the square steel; a folding fence fixed to the square steel that can move along the crossbar; a crossbar provided on the side of the crossbar near the self-propelled machine; a barrier that can cover and block the folding fence is wrapped around the outer ring of the middle of the crossbar; and the end of the barrier that is wrapped around the outer ring of the crossbar can hang down freely.

2. The retractable self-propelled tail guardrail according to claim 1, characterized in that: An H-shaped carriage is rotatably mounted on the hinge shaft at the top of the folding fence; a pressure plate is bolted to the top surface of the carriage; the carriage and the pressure plate are slidably sleeved on the outside of the crossbar.

3. The retractable self-moving tail guardrail according to claim 1, characterized in that: A hook is rotatably mounted on the hinge axis at the center of the side of the folding fence away from the barrier; multiple hooks are used for hanging cables.

4. A retractable self-propelled tail guardrail according to claim 1, characterized in that: A fixed seat is fixedly connected to the end of the horizontal column away from the square steel; a rotating block is rotatably mounted on the side of the fixed seat away from the blocking member; a support column for supporting the horizontal column is fixedly connected to the bottom of the rotating block.

5. A retractable self-propelled tail guardrail according to claim 4, characterized in that: A stop block is bolted to the side of the fixed base near the rotating block and away from the square steel; a slot matching the stop block is provided on the side of the rotating block.

6. A retractable self-propelled tail guardrail according to claim 4, characterized in that: Both the square steel and the fixed base are fixedly connected to a bracket on the side near the barrier; the two ends of the crossbar are respectively hung on the two brackets; a sleeve for winding the barrier is rotatably installed in the middle of the crossbar; a counterweight is fixedly connected to the bottom of the barrier.

7. A retractable self-propelled tail guardrail according to claim 6, characterized in that: Both ends of the crossbar are equipped with locking blocks that engage with the hanger.

8. A retractable self-moving tail guardrail according to claim 7, characterized in that: The top surface of the card block is provided with a crossbeam that can be pressed down; the bottom of the crossbeam is provided with a rubber strip for squeezing the top of the sleeve rod.

Images