Downhole ladder

Abstract

The utility model relates to the technical field of underground ladders, and discloses an underground ladder which comprises a main ladder, sliding grooves are formed in the left side and the right side of the top of the main ladder, sliding buckles are connected to the inner sides of the two sliding grooves in a sliding mode, extension ladders are fixedly connected to the tops of the two sliding buckles, and clamping buckles are connected to the left ends and the right ends of the rear sides of the tops of the sliding grooves in a sliding mode. The bottom of each buckle is fixedly connected with a spring, the middle of the bottom of each buckle is fixedly connected with a steel wire, the tail end of each steel wire is fixedly connected with a pull plug, an adjustable fixing mechanism is installed at the front end of the main ladder, and the adjustable fixing mechanism is used for fixing the underground ladder. According to the utility model, the pull bolt is pulled to enable the buckle to retract into the main ladder through the steel wire, then the extension ladder slides downwards under the matching of the slide buckle and the chute, the pull bolt is loosened after the extension ladder slides to a proper position, and the buckle is pushed out by the spring to be clamped into the corresponding clamping groove below the extension ladder to be fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to downhole ladder technical field especially relates to a downhole ladder. BACKGROUND

[0002] Downhole ladder is a kind of equipment specially used to help personnel to go up and down in the vertical or inclined underground passageway such as mine, shaft and cellar, and it is made of metal or high-strength engineering plastic from structure, and metal downhole ladder is more solid, can bear heavier weight, and has better durability.

[0003] Through the retrieval, China patent publication No. CN118065750A discloses a ladder that can be conveniently walked and positioned, and the ladder includes two first support ladder poles arranged in parallel, a plurality of steps arranged between the two first support ladder poles, two second support ladder poles arranged in parallel, a plurality of transverse connecting rods arranged between the two second support ladder poles, a ladder foot arranged at the lower end of at least one of the first support ladder pole and the second support ladder pole, the ladder foot including a main housing for connecting the lower end of the support ladder pole, an anti-slip portion arranged at the lower end of the main housing, a moving wheel arranged at one side of the main housing, the moving wheel being controllably moved in a straight line direction between a first position and a second position higher than the first position, when the moving wheel is located at the first position, the lowest point of the moving wheel is lower than the anti-slip portion, so that the moving wheel provides support, and when the moving wheel is located at the second position, the moving wheel is higher than the anti-slip portion, so that the anti-slip portion provides support, and the existing downhole ladder is adjusted in length by folding, and this length adjustment mode has certain requirements for space when used, and is not convenient to use in some narrow spaces. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a downhole ladder, which aims at improving the problem that the folded downhole ladder in the prior art has certain requirements for space when used and is not convenient to use in some narrow spaces.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a downhole ladder, including main ladder, the top of the main ladder left and right sides is equipped with the sliding slot, the inner side of two sliding slots is slidably connected with the slide buckle, the top of two slide buckles is fixedly connected with the extension ladder, the top rear side of the sliding slot is slidably connected with the buckle left and right ends, the bottom of two buckles is fixedly connected with the spring, the bottom of two buckles is fixedly connected with the steel wire in the middle part, the tail end of two steel wires is fixedly connected with the pull bolt, the front end of the main ladder is equipped with adjustable fixing mechanism, and the adjustable fixing mechanism is used to fix the downhole ladder.

[0006] Through the technical scheme, the pull knobs on both sides of the main ladder are pulled, and when the pull knobs on both sides of the main ladder are pulled, the steel wires fixed at the ends are synchronously pulled, and when the two steel wires are pulled, the two buckles fixed at the ends thereof are also synchronously retracted inward, when the two buckles are completely retracted into the main ladder, the extension ladder slides downward under the cooperation of the sliding buckle and the sliding groove, and when the extension ladder slides to a proper position, the pull knobs are loosened, and with the loosening of the pull knobs, the two springs push the two buckles out of the corresponding clamping grooves below the extension ladder, so that the position of the extension ladder is fixed.

[0007] Further description is made to the technical scheme:

[0008] The adjustable fixing mechanism comprises rotating rods, both of which are fixedly connected to the left and right ends of the front side of the main ladder, and both of which are rotatably connected to the outer sides of the rotating rods, the front side of the fixed plate is rotatably connected to the rotating handle, the rear end of the rotating handle is fixedly connected to the gear, and the upper and lower ends of the rear side of the fixed plate are slidably connected to the racks, the adjacent sides of both of the racks are gear-meshingly connected, and the ends of both of the racks are fixedly connected to the extension plates.

[0009] Through the technical scheme, the fixed plate is unfolded under the cooperation of the two rotating rods, and then the rotating handle on the fixed plate is rotated, and when the rotating handle is rotated, the gear fixed thereunder is also synchronously rotated, and when the gear is rotated, the two racks installed under the fixed plate are slid to both sides through the meshing mode, and when the two racks are slid to both sides, the two extension plates fixed at the ends are also slid outward.

[0010] Further description is made to the technical scheme:

[0011] The middle parts of the main ladder and the extension ladder are fixedly connected to a plurality of anti-skid pads, and a plurality of recesses are formed in the front ends of the plurality of anti-skid pads.

[0012] Through the technical scheme, the anti-skid pads fixed on the main ladder and the extension ladder cooperate with the recesses formed thereon, so that the slipping of the user can be effectively avoided.

[0013] Further description is made to the technical scheme:

[0014] The bottom left and right sides of the main ladder are provided with protective pads, and a plurality of drawing pins are fixedly connected to the bottom front and rear sides of the two protective pads.

[0015] Through the technical scheme, the protective pads fixed under the main ladder by the drawing pins can avoid abrasion during use.

[0016] Further description is made to the technical scheme:

[0017] The top rear side of the extension ladder is provided with a circular groove, and a gas sensor is fixedly connected to the inner side of the circular groove.

[0018] Through the above technical scheme, the gas sensor for detecting toxic gas is fixed on the extension ladder through the circular groove.

[0019] Further description of the above technical scheme is as follows:

[0020] The left and right sides of the rotating rod are threadedly connected with screws, and the outer walls of the screws are threadedly connected with limiting sheets.

[0021] Through the above technical scheme, the limiting sheets fixed on the left and right sides of the rotating rod through the screws are used to avoid falling off.

[0022] Further description of the above technical scheme is as follows:

[0023] The outer wall of the rotating handle is equidistantly provided with a plurality of anti-skid sleeves, and the left and right sides of the anti-skid sleeves are fixedly connected with magic tapes.

[0024] Through the above technical scheme, the anti-skid sleeves fixed on the rotating handle through the magic tapes can avoid slipping when the user rotates the rotating handle.

[0025] Further description of the above technical scheme is as follows:

[0026] The left and right sides of the extension ladder are provided with protective sleeves, and the outer sides of the protective sleeves are fixedly connected with fixing rings.

[0027] Through the above technical scheme, the protective sleeves fixed under the extension ladder through the fixing rings can avoid abrasion of the extension ladder during use.

[0028] The utility model has the following beneficial effects:

[0029] 1、the utility model discloses, pull the buckle is retracted into the main ladder through the steel wire by pulling the draw bolt, then the extension ladder is down under the cooperation of slide buckle and slide groove, and the draw bolt is released after the extension ladder slides to the appropriate position, and the spring pushes the buckle to be fixed in the corresponding card slot below the extension ladder, so that the effect of the vertical extension of the downhole ladder is realized, and the problem that the on-site space is small and inconvenient to use is avoided.

[0030] 2、the utility model discloses, the fixed plate is unfolded under the cooperation of the rotating rod, and then the rotating handle is rotated to drive the rack and extension plate to slide outwards through the gear, and the contact area of the fixing mechanism and the ground can be adjusted through the two extension plates that slide outwards, so that the effect of the stable downhole ladder is realized. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A perspective view of the downhole ladder is provided.

[0032] Figure 2 A front view of the downhole ladder is provided in the utility model;

[0033] Figure 3 A partial structure sectional view of the downhole ladder is provided in the utility model;

[0034] Figure 4 A downhole ladder is provided in the utility model Figure 3 An enlarged view of A in the middle;

[0035] Figure 5 An exploded view of the adjustable fixing mechanism of the downhole ladder is provided in the utility model.

[0036] Legend:

[0037] 1, main ladder; 2, adjustable fixing mechanism; 201, rotating rod; 202, fixed plate; 203, handle; 204, gear; 205, rack; 206, extension plate; 3, sliding groove; 4, sliding buckle; 5, extension ladder; 6, buckle; 7, spring; 8, steel wire; 9, pull bolt; 10, non-slip pad; 11, groove; 12, protective pad; 13, drawing pin; 14, round groove; 15, gas sensor; 16, screw; 17, limiting sheet; 18, anti-skid sleeve; 19, magic tape; 20, protective sleeve; 21, fixing ring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0039] Refer to Figure 2 , Figure 3 and Figure 4The utility model provides an embodiment: a downhole ladder, including main ladder 1, the top left and right sides of main ladder 1 are all seted up with sliding slot 3, the inner side of two sliding slots 3 all are slidably connected with slide buckle 4, the top of two slide buckles 4 all are fixedly connected with extension ladder 5, and extension ladder 5 is connected with main ladder 1 through slide buckle 4 cooperation sliding slot 3, and the top rear side left and right ends of sliding slot 3 all are slidably connected with buckle 6, and buckle 6 is used for fixing the position of extension ladder 5, the bottom of two buckles 6 all is fixedly connected with spring 7, and spring 7 is used for ejecting buckle 6, and the bottom middle part of two buckles 6 all is fixedly connected with steel wire 8, and the end of two steel wires 8 all is fixedly connected with pull bolt 9, and pull bolt 9 is driven buckle 6 to retract through steel wire 8, and the front end of main ladder 1 is installed with adjustable fixing mechanism 2, and adjustable fixing mechanism 2 is used for fixing downhole ladder, and the middle part of main ladder 1 and extension ladder 5 equidistant fixedly connected with a plurality of antiskid pads 10, and the front end of a plurality of antiskid pads 10 equidistantly seted up with a plurality of grooves 11, and antiskid pad 10 cooperation groove 11 avoids that the user slips;

[0040] Specifically, two sliding slots 3 are set on the upper sides of the main ladder 1, and the extension ladder 5 is connected with the main ladder 1 through the slide buckle 4 and the sliding slot 3 on the main ladder 1. When the downhole ladder is needed to be used, after fixing the downhole ladder, first pull the pull bolts 9 on both sides of the main ladder 1. When the pull bolts 9 on both sides of the main ladder 1 are pulled, the steel wires 8 fixed at the ends are driven synchronously. When the two steel wires 8 are pulled, the two buckles 6 fixed at the ends are also driven to retract inward. When the two buckles 6 are completely retracted into the main ladder 1, the extension ladder 5 will slide downward under the cooperation of the slide buckle 4 and the sliding slot 3. After the extension ladder 5 slides to the appropriate position, the pull bolts 9 are released. With the pull bolts 9 being released, the two springs 7 will push the two buckles 6 into the corresponding buckle slots under the extension ladder 5, so as to fix the position of the extension ladder 5. In this way, the vertical extension and retraction effect of the downhole ladder is realized. The antiskid pads 10 fixed on the main ladder 1 and the extension ladder 5 cooperate with the grooves 11 set on them, which can effectively prevent the user from slipping.

[0041] Referring to Figure 2 and Figure 5The adjustable fixing mechanism 2 comprises two rotating rods 201, both of which are fixedly connected to the front left and right ends of the main ladder 1. The outer sides of the two rotating rods 201 are both rotationally connected with a fixing plate 202. The rotating rod 201 is used to connect the fixing plate 202. The front middle part of the fixing plate 202 is rotationally connected with a rotating handle 203. The rear end of the rotating handle 203 is fixedly connected with a gear 204. The rotating handle 203 drives the gear 204 to rotate. The upper and lower ends of the rear side of the fixing plate 202 are both slidingly connected with a rack 205. The adjacent side of the two racks 205 is both meshingly connected with the gear 204. The ends of the two racks 205 are both fixedly connected with an extension plate 206. The gear 204 drives the extension plate 206 to slide outward through the rack 205. The left and right sides of the two rotating rods 201 are both threadedly connected with a screw 16. The outer walls of the plurality of screws 16 are all threadedly connected with a limiting piece 17. The limiting piece 17 can prevent the rotating rod 201 from falling off. The outer wall of the rotating handle 203 is equidistantly provided with a plurality of anti-skid sleeves 18. The left and right sides of the plurality of anti-skid sleeves 18 are both fixedly connected with a magic tape 19. The anti-skid sleeve 18 can increase the gripping force of the rotating handle 203.

[0042] Specifically, the fixing plate 202 is unfolded under the cooperation of the two rotating rods 201. Then the rotating handle 203 on the fixing plate 202 is rotated. When the rotating handle 203 rotates, the gear 204 fixedly connected thereto also rotates synchronously. When the gear 204 rotates, it drives the two racks 205 installed below the fixing plate 202 to slide to both sides through the meshing mode. When the two racks 205 slide to both sides, they respectively drive the two extension plates 206 fixed at the ends to slide outward. The contact area between the adjustable fixing mechanism 2 and the ground can be adjusted through the two outward sliding extension plates 206. The limiting piece 17 fixed on the two sides of the rotating rod 201 by the screw 16 is used to prevent it from falling off. The anti-skid sleeve 18 fixed on the outer side of the rotating handle 203 by the magic tape 19 can prevent the user from slipping when rotating the rotating handle 203.

[0043] Referring to Figure 1 , Figure 3 and Figure 4 , the bottom left and right sides of the main ladder 1 are both provided with a protective pad 12. The bottom front and back sides of the two protective pads 12 are both fixedly connected with a plurality of drawing pins 13. The protective pad 12 can prevent the main ladder 1 from being worn. The top rear left and right ends of the extension ladder 5 are both provided with a circular groove 14. The inner sides of the two circular grooves 14 are both fixedly connected with a gas sensor 15. The circular groove 14 is used to fix the gas sensor 15. The rear left and right sides of the extension ladder 5 are both provided with a protective sleeve 20. The outer sides of the two protective sleeves 20 are both fixedly connected with a fixing ring 21. The protective sleeve 20 can prevent the extension ladder 5 from being worn.

[0044] Specific, by the thumbtack 13 fixed in the main ladder 1 under the protective pad 12 can avoid its wear and tear in use, for detecting toxic gas gas sensor 15 through the circular groove 14 fixed in the extension ladder 5, through the fixed ring 21 fixed in the extension ladder 5 under the protective sleeve 20 can avoid the extension ladder 5 in use wear and tear.

[0045] Working principle: two chute 3 are set up in the upper side of the main ladder 1, and the extension ladder 5 is connected with the chute 3 on the main ladder 1 through the slide buckle 4; when the downhole ladder is needed, after fixing the downhole ladder, first pull the pull bolt 9 on both sides of the main ladder 1, when the pull bolt 9 on both sides of the main ladder 1 is pulled, the steel wire 8 fixed at the end will be pulled synchronously, when the two buckles 6 fixed at the end are pulled, the two buckles 6 will be retracted inward, when the two buckles 6 are completely retracted into the main ladder 1, the extension ladder 5 will slide down under the cooperation of the slide buckle 4 and the chute 3; after the extension ladder 5 slides to the appropriate position, the pull bolt 9 is loosened, and the two buckles 6 are pushed out and clamped into the corresponding clamping groove below the extension ladder 5 by the two springs 7, so as to fix the position of the extension ladder 5, so as to realize the effect of vertical extension of the downhole ladder, and avoid the problem that it is not convenient to use due to small space;

[0046] When the downhole ladder is used, the position is more firmly fixed, and the fixed plate 202 is unfolded under the cooperation of the two rotating rods 201 when used; then the handle 203 on the fixed plate 202 is rotated, the gear 204 fixed below it is also rotated synchronously when the handle 203 is rotated, the two racks 205 installed below the fixed plate 202 are driven to slide to both sides by meshing when the gear 204 rotates, the two extension plates 206 fixed at the end are driven to slide outward when the two racks 205 slide to both sides; the contact area of the adjustable fixing mechanism 2 with the ground is increased by the two outward sliding extension plates 206, so as to realize the effect of stabilizing the downhole ladder.

[0047] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application, should be included in the protection scope of the present application.

Claims

1. A downhole ladder comprising a main ladder (1), characterized in that: The main ladder (1) has a sliding groove (3) on the top left and right sides. The inner sides of the two sliding grooves (3) are slidably connected with a sliding buckle (4). The top of the two sliding buckles (4) is fixedly connected with an extension ladder (5). The top rear left and right ends of the sliding groove (3) are slidably connected with a buckle (6). The bottom of the two buckles (6) is fixedly connected with a spring (7). The bottom middle of the two buckles (6) is fixedly connected with a steel wire (8). The ends of the two steel wires (8) are fixedly connected with a bolt (9). The front end of the main ladder (1) is equipped with an adjustable fixing mechanism (2). The adjustable fixing mechanism (2) is used to fix the lower well ladder.

2. A downhole ladder according to claim 1, characterized in that: The adjustable fixing mechanism (2) includes a rotating rod (201). The two rotating rods (201) are fixedly connected to the left and right ends of the front side of the main ladder (1). The outer sides of the two rotating rods (201) are rotatably connected to a fixing plate (202). The middle front side of the fixing plate (202) is rotatably connected to a rotating handle (203). The rear end of the rotating handle (203) is fixedly connected to a gear (204). The upper and lower rear ends of the fixing plate (202) are slidably connected to racks (205). The adjacent sides of the two racks (205) are meshed with gears (204). The ends of the two racks (205) are fixedly connected to extension plates (206).

3. A downhole ladder according to claim 1, characterized in that: Multiple anti-slip pads (10) are fixedly connected at equal intervals in the middle of the main ladder (1) and the extension ladder (5), and multiple grooves (11) are provided at equal intervals at the front ends of the multiple anti-slip pads (10).

4. A downhole ladder according to claim 1, characterized in that: The bottom left and right sides of the main ladder (1) are equipped with protective pads (12), and the bottom front and back sides of the two protective pads (12) are fixedly connected with multiple thumbtacks (13).

5. A downhole ladder according to claim 1, characterized in that: The top rear side of the extension ladder (5) is provided with a circular groove (14), and a gas sensor (15) is fixedly connected to the inner side of each of the two circular grooves (14).

6. A downhole ladder according to claim 2, characterised in that: Both rotating rods (201) are threaded with screws (16) on their left and right sides, and the outer walls of the screws (16) are threaded with limit plates (17).

7. A downhole ladder according to claim 2, characterised in that: Multiple anti-slip sleeves (18) are equidistantly installed on the outer wall of the handle (203), and Velcro (19) is fixedly connected to the left and right sides of the multiple anti-slip sleeves (18).

8. A downhole ladder according to claim 1, characterized in that: The extension ladder (5) is equipped with protective sleeves (20) on both the left and right sides of its rear side, and the outer sides of the two protective sleeves (20) are fixedly connected with fixing rings (21).

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