Novel crowbar suitable for underground mine

Abstract

The utility model belongs to the field of mining tools, and discloses a novel crowbar suitable for mine underground, which comprises a holding rod and an extension rod, one ends, far away from each other, of the holding rod and the extension rod are detachably and fixedly connected with a curved flat shovel and a square sharp prying head respectively, and an anti-sputtering baffle is arranged at the position, close to the square sharp prying head, of the extension rod. The length can be adjusted telescopically, and the proper length can be adjusted according to the height of a roadway roof or a stope roof to facilitate prying; except for the square tip and the bent flat two ends, the crowbar main body section and the crowbar auxiliary body section are made of carbon fibers and aluminum alloy in a combined mode, and the crowbar has the excellent characteristics of being light, good in toughness, free of deformation, firm, durable and the like; when an operator uses the novel crowbar to carry out prying treatment, the weight is light, and the crowbar is light and labor-saving to use; and an anti-splashing baffle is additionally arranged, eyes of operators are protected, and rock debris splashing is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining tools, and particularly relates to a new type of crowbar applicable to underground mines. Background Art

[0002] At present, when removing floating rocks on the roadway roof (referred to as prying and hair removal treatment) in underground mines, the length of the crowbar used is about 1.7 meters and the weight is about 20 catties. The following problems generally exist in the use process:

[0003] First, it is extremely inconvenient for personnel to carry this long crowbar while walking.

[0004] Second, when using this crowbar to carry out prying and hair removal treatment on the floating rocks on the roof, it is very heavy. Usually, it takes a great deal of physical strength to finish prying and hair removal treatment of the floating rocks on the roof of a stope, and the hands and arms will feel extremely fatigued and sore.

[0005] Third, when the operator is carrying out prying and hair removal treatment and uses the "square tip" end to carry out chiseling and crushing, rock chips often splash, causing harm to the eyes and face of the operator. Such safety accidents have happened around us, and the lessons are profound. Content of the Utility Model

[0006] The purpose of the utility model is to provide a new type of crowbar applicable to underground mines to solve the above problems in the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A new type of crowbar applicable to underground mines includes a grip rod and an extension rod. The grip rod is slidably connected to the outside of the extension rod. The ends of the grip rod and the extension rod that are away from each other are respectively detachably and fixedly connected with a curved flat shovel and a square tip crowbar head. An anti-sputtering baffle is arranged near the square tip crowbar head of the extension rod. The anti-sputtering baffle is assembled by a plurality of mutually assembled fan-shaped baffle pieces. The anti-sputtering baffle is folded by splitting into each fan-shaped baffle piece. A telescopic adjustment mechanism is arranged at one end of the grip rod close to the extension rod;

[0009] The telescopic adjustment mechanism includes a nut and an adjustment cylinder. External threads are provided on the surface of the grip rod. The nut is screwed to the grip rod through the external threads. The adjustment cylinder is sleeved on the outside of the grip rod and fixedly connected to one end of the nut. A circle of convex platforms is arranged around the inner wall of the adjustment cylinder and near one end. The convex platforms are transitioned by an inclined plane between the inner walls of the adjustment cylinder. Spring pins are fixedly connected to the opposite sides of the outer wall of the grip rod around the circumference and corresponding to the convex platforms. A plurality of pin holes are equidistantly arranged on the surface of the extension rod around the circumference. The pin shaft of the spring pin is inserted into the pin hole under the pressure of the convex platform. A relaxation structure is arranged between the adjustment cylinder and the end of the grip rod.

[0010] In a preferred embodiment of the present utility model, the grip rod has a cylindrical tubular structure, the extension rod is a regular polygon long tube, and the shape of the inner hole of the grip rod fits the shape of the extension rod.

[0011] In a preferred embodiment of the present utility model, the relaxation structure includes a baffle relaxation spring. The baffle is fixedly connected to the end of the grip rod. The relaxation spring is sleeved on the outer wall of the grip rod and abuts between the adjusting cylinder and the baffle.

[0012] In a preferred embodiment of the present utility model, the grip rod is made of carbon fiber material, and the extension rod is made of aluminum alloy material.

[0013] In a preferred embodiment of the present utility model, a movable rod is fixedly connected to the middle of the narrow end of the fan-shaped baffle. Long circular holes are axially opened on each surface around the extension rod. The movable rod is movably connected to the long circular holes and fixedly connected with a clamping ball through the long circular holes. Arc-shaped clamping grooves are arranged on the top and bottom surfaces of the fan-shaped baffle and close to the wide end. An arc-shaped clamping sleeve is clamped between the two arc-shaped clamping grooves. The arc-shaped clamping sleeve straddles the edge of the wide end of the fan-shaped baffle. Two adjacent fan-shaped baffles are clamped and fixed by one arc-shaped clamping sleeve.

[0014] In a preferred embodiment of the present utility model, the arc-shaped clamping sleeve is made of transparent plastic material.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model can retract and shorten the length of the crowbar, which is convenient to carry and has a light weight.

[0017] The length can be telescopically adjusted to adjust a suitable length according to the height of the roadway roof or the stope roof for prying the loose rock.

[0018] Except for the "obelisk" and "bent flat" ends, the main body section and the secondary body section of the crowbar are made of a combination of carbon fiber and aluminum alloy, which has excellent characteristics such as light weight, good toughness, no deformation, and durability. When operating personnel use this new type of crowbar for prying the loose rock, it is light in weight and convenient and labor-saving to use.

[0019] An anti-sputtering baffle that can be folded and assembled is added to protect the eyes and face of operating personnel from being injured by flying rock debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a plane cross-sectional structural schematic diagram of the present utility model;

[0022] Figure 3 is Figure 2 The enlarged structural schematic diagram at B;

[0023] Figure 4 is Figure 1 The enlarged structural schematic diagram at A.

[0024] Reference numerals; wherein, 1, curved flat chisel; 2, grip rod; 21, external thread; 3, extension rod; 31, oblong hole; 32, pin hole; 4, square tip pry head; 5, telescopic adjustment mechanism; 51, nut; 52, adjustment cylinder; 53, boss; 54, spring pin; 55, relaxation spring; 56, baffle; 6, anti-sputtering baffle; 61, sector-shaped baffle; 611, arc-shaped card slot; 62, arc-shaped card sleeve; 63, movable rod; 64, clamping ball. Detailed implementation manners

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the accompanying drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the accompanying drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but do not constitute a limitation to the present invention.

[0026] Embodiment:

[0027] As Figures 1-4 shown, this embodiment provides a new type of crowbar applicable to underground mines, including a grip rod 2 and an extension rod 3. The grip rod 2 is slidably connected to the outside of the extension rod 3. The mutually remote ends of the grip rod 2 and the extension rod 3 are respectively detachably and fixedly connected with a curved flat chisel 1 and a square tip pry head 4. An anti-sputtering baffle 6 is arranged near the square tip pry head 4 of the extension rod 3. The anti-sputtering baffle 6 is assembled by a plurality of mutually assembled sector-shaped baffles 61. The anti-sputtering baffle 6 is folded by disassembling it into each sector-shaped baffle 61. A telescopic adjustment mechanism 5 is arranged at one end of the grip rod 2 close to the extension rod 3;

[0028] The telescopic adjustment mechanism 5 includes a nut 51 and an adjustment cylinder 52. An external thread 21 is provided on the surface of the grip rod 2. The nut 51 is screwed onto the grip rod 2 through the external thread 21. The adjustment cylinder 52 is sleeved outside the grip rod 2 and fixedly connected to one end of the nut 51. A ring of convex platforms 53 is provided around the inner wall of the adjustment cylinder 52 near one end. The convex platforms 53 are transitioned by an inclined surface between the inner walls of the adjustment cylinder 52. Spring pins 54 are fixedly connected to the opposite sides of the outer wall around the grip rod 2 corresponding to the convex platforms 53. A plurality of pin holes 32 are equidistantly provided on the surface around the extension rod 3. The pin shafts of the spring pins 54 are pressed through the convex platforms 53 and inserted into the pin holes 32. A relaxation structure is provided between the adjustment cylinder 52 and the end of the grip rod 2.

[0029] In a preferred embodiment of the present utility model, further, the grip rod 2 has a cylindrical tubular structure, the extension rod 3 is a regular polygon long tube, and the shape of the inner hole of the grip rod 2 fits the shape of the extension rod 3.

[0030] In a preferred embodiment of the present utility model, further, the relaxation structure includes a baffle 56 and a relaxation spring 55. The baffle 56 is fixedly connected to the end of the grip rod 2. The relaxation spring 55 is sleeved on the outer wall of the grip rod 2 and abuts between the adjustment cylinder 52 and the baffle 56.

[0031] In a preferred embodiment of the present utility model, further, the grip rod 2 is made of carbon fiber material, and the extension rod 3 is made of aluminum alloy material.

[0032] Specifically, as Figures 1-3 shown, in order to make this crowbar take into account both convenient carrying and length adjustment according to the working conditions, it is set as a two-section telescopic type, including two parts: a grip rod 2 and an extension rod 3. By sliding the extension rod 3 inside the grip rod 2, the length of the crowbar is changed by telescoping the extension rod 3, and a telescopic adjustment mechanism 5 is provided at the end of the grip rod 2. When the extension rod 3 needs to be telescoped, by rotating the adjustment cylinder 52 to drive the nut 51 to rotate. Since the nut 51 is connected to the external thread 21 of the grip rod 2, the nut 51 and the adjustment cylinder 52 rotate synchronously and move along the grip rod 2, so that the convex platform 53 inside the adjustment cylinder 52 moves. By the movement of the convex platform 53, one end of the pin shaft of the spring pin 54 is pressed so that the other end is inserted into the pin hole 32 of the extension rod 3 to fix its position;

[0033] When the extension rod 3 needs to be adjusted again, by reversing the adjustment cylinder 52, the convex platform 53 and the spring pin 54 are misaligned. At this time, due to the action of the spring of the spring pin 54, one end of the pin shaft is pushed into the space inside the adjustment cylinder 52 without the convex platform 53, and the other end of the pin shaft exits the jack, so that the extension rod 3 can slide again inside the grip rod 2 to adjust the overall length of the crowbar;

[0034] This crowbar adopts a lightweight design. The grip rod 2 is made of carbon fiber material and is combined with an extension rod 3 made of aluminum alloy material, which significantly reduces the weight of the crowbar, thereby reducing the burden on workers when carrying and using it;

[0035] Secondly, in order to prevent the nut 51 for placing the telescopic adjustment mechanism 5 from loosening due to vibration after the telescopic adjustment mechanism 5 is adjusted, a relaxation spring 55 is provided to press against the nut 51, thereby preventing the nut 51 from loosening due to vibration, and thus preventing safety accidents caused by crowbar failures.

[0036] In a preferred embodiment of the present invention, further, a movable rod 63 is fixedly connected to the middle of the narrow end of the fan-shaped baffle 61. Long circular holes 31 are axially formed on each surface around the extension rod 3. The movable rod 63 is movably connected to the long circular holes 31 and fixedly connected with a clamping ball 64 through the long circular holes 31. Arc-shaped clamping grooves 611 are provided on the top and bottom surfaces of the fan-shaped baffle 61 and near the wide end. An arc-shaped clamping sleeve 62 is clamped between the two arc-shaped clamping grooves 611. The arc-shaped clamping sleeve 62 straddles the edge of the wide end of the fan-shaped baffle 61. Two adjacent fan-shaped baffles 61 are clamped and fixed by an arc-shaped clamping sleeve 62.

[0037] In a preferred embodiment of the present invention, further, the arc-shaped clamping sleeve 62 is made of a transparent plastic material.

[0038] Specifically, as Figure 4 shown, when carrying this crowbar usually, the movable rod 63 is not restricted in the long circular holes 31, and due to the self-weight of the fan-shaped baffle 61, it droops and folds. Since the clamping ball 64 is clamped inside the long circular holes 31, it will not come out; when the anti-sputtering baffle 6 is needed, by assembling each fan-shaped baffle 61 into a complete circle one by one, the main operation process is to fix the two by clamping the side edges of the fan-shaped baffle 61 with the arc-shaped clamping sleeve 62 at the same time;

[0039] The anti-sputtering baffle 6 is designed at one end close to the "obelisk" because when holding the crowbar to drill and break the roof rock, rock chips fly, which will not cause harm to the eyes and face of the operator, playing a very important role in protecting the face and resisting the splashing of rock chips; and through the detachable and foldable design, the overall crowbar is convenient to carry and install; the material of the fan-shaped baffle 61 is a transparent POE fabric, which does not block the line of sight and can resist the splashing of rock chips at the same time.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of crowbar applicable to underground mines, comprising a grip rod (2) and an extension rod (3), characterized in that: The grip rod (2) is slidably connected to the outside of the extension rod (3). The ends of the grip rod (2) and the extension rod (3) that are away from each other are respectively detachably and fixedly connected with a curved flat spatula (1) and a square tip pry head (4). An anti-sputtering baffle (6) is arranged near the square tip pry head (4) of the extension rod (3). The anti-sputtering baffle (6) is assembled by a plurality of mutually assembled fan-shaped baffles (61). The anti-sputtering baffle (6) is folded by splitting it into each fan-shaped baffle (61). A telescopic adjustment mechanism (5) is arranged at one end of the grip rod (2) close to the extension rod (3); The telescopic adjustment mechanism (5) includes a nut (51) and an adjustment cylinder (52). External threads (21) are provided on the surface of the grip rod (2). The nut (51) is screwed to the grip rod (2) through the external threads (21). The adjustment cylinder (52) is sleeved on the outside of the grip rod (2) and fixedly connected to one end of the nut (51). A circle of bosses (53) is arranged around the inner wall of the adjustment cylinder (52) and near one end. The bosses (53) are transitioned by an inclined surface between the inner walls of the adjustment cylinder (52). Spring pins (54) are fixedly connected to the opposite sides of the outer wall around the grip rod (2) corresponding to the bosses (53). A plurality of pin holes (32) are equidistantly arranged on the surface around the extension rod (3). The pin shafts of the spring pins (54) are inserted into the pin holes (32) under the pressure of the bosses (53). A relaxation structure is arranged between the adjustment cylinder (52) and the end of the grip rod (2).

2. The novel crowbar applicable to underground mines according to claim 1, characterized in that: The grip rod (2) has a cylindrical tubular structure, the extension rod (3) is a regular polygon long tube, and the shape of the inner hole of the grip rod (2) fits the shape of the extension rod (3).

3. The novel crowbar applicable to underground mines according to claim 2, characterized in that: The relaxation structure includes a baffle (56) and a relaxation spring (55). The baffle (56) is fixedly connected to the end of the grip rod (2). The relaxation spring (55) is sleeved on the outer wall of the grip rod (2) and abuts between the adjustment cylinder (52) and the baffle (56).

4. The novel crowbar applicable to underground mines according to claim 3, wherein: The grip rod (2) is made of carbon fiber material, and the extension rod (3) is made of aluminum alloy material.

5. The novel crowbar applicable to underground mines according to claim 2, wherein: A movable rod (63) is fixedly connected to the middle of the narrow end of the fan-shaped baffle (61). Long circular holes (31) are axially arranged on each surface around the extension rod (3). The movable rod (63) is movably connected to the long circular holes (31) and fixedly connected with a clamping ball (64) through the long circular holes (31). Arc-shaped clamping grooves (611) are arranged on the top and bottom surfaces of the fan-shaped baffle (61) and near the wide end. An arc-shaped clamping sleeve (62) is clamped between the two arc-shaped clamping grooves (611). The arc-shaped clamping sleeve (62) straddles the wide end edge of the fan-shaped baffle (61). Two adjacent fan-shaped baffles (61) are clamped and fixed by one arc-shaped clamping sleeve (62).

6. The novel crowbar applicable to underground mines according to claim 5, characterized in that: The arc-shaped clamping sleeve (62) is made of transparent plastic material.

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