Quick dismounting device for U-shaped clamp

Abstract

The utility model discloses a U-shaped card quick dismantling device which comprises a supporting rod with a rack, a supporting base arranged at the bottom of the supporting rod, a connecting sleeve arranged on the supporting rod in a sleeved mode, a lifting mechanism arranged at the rear end of the connecting sleeve and used for driving the connecting sleeve to slide upwards along the supporting rod, and the lifting mechanism comprises a driving rod, a U-shaped connecting piece, a ratchet wheel and a driving pawl. The U-shaped connecting piece is arranged at the end, close to the connecting sleeve, of the driving rod, the U-shaped connecting piece is fixedly connected with the two sides of a pair of connecting plates arranged on the connecting sleeve through a first plug pin, the ratchet wheel is connected between the first plug pin and the connecting plates and meshed with a rack on the supporting rod, and one end of the driving pawl is hinged to the inner side of the U-shaped connecting piece through a second plug pin. The other end of the driving pawl is meshed with the ratchet top. When the U-shaped clamp dismounting device is used, the driving rod is pulled upwards, the pawl pushes the ratchet wheel to rotate along the rack, the hook body can be lifted to drive the U-shaped clamp to be pulled out upwards and dismounted, and the U-shaped clamp can be dismounted quickly, safely and efficiently.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field, especially a kind of U type card quick dismantling device. BACKGROUND

[0002] Coal mine underground, especially the hydraulic equipment such as pump station, hydraulic support and so on of fully mechanized coal mining face, pipeline and the safety line of electro-hydraulic control, etc., are connected using U type card, and in installation, maintenance, especially in dismantling work, U type card needs to be frequently removed in large quantities and frequently. The traditional dismantling method is mostly through self-made pointed shovel or special-shaped hook tool to remove U type card. For example, Chinese utility model patent No. 201921835716.8, a kind of special tool for removing U type card, is made of automobile leaf spring, including main plate, the first protrusion, the second protrusion and the third protrusion are sequentially arranged on one end of the main plate from the end, the first protrusion is hook body, the top end of the hook body has sharp part, the first recess is arranged between the bottom end and the second protrusion on the main plate, the second recess is arranged between the second protrusion and the third protrusion, the width of the hook body increases from top end to bottom end. When used, sharp part is inserted between U type card and the object, because the width of the hook body increases from top end to bottom end, it can be well inserted and stuck, then turn the handle to remove U type card by lever principle, improve work efficiency and improve safety, easy to operate, simple and convenient operation, anytime and anywhere can be removed in underground operation. This scheme is feasible, but it needs large pressure or needs to use hand hammer, and it often appears that hand is injured, efficiency is lower and unsafe. CONTENT OF UTILITY MODEL

[0003] To solve the technical problems mentioned in the background art, the utility model provides a kind of U type card quick dismantling device.

[0004] The utility model discloses the following technical scheme: a kind of U-shaped card quick dismantling device, including the support rod of one side with rack;Support rod bottom is provided with support base;Support rod is set with connecting sleeve;The middle part of the rear end of connecting sleeve is provided with lifting mechanism for driving connecting sleeve to slide upwards along support rod;Lifting hook body is arranged outside connecting sleeve;Among them, the lifting mechanism includes driving rod, U-shaped connecting piece, ratchet and driving dog;The U-shaped connecting piece is arranged at the one end of driving rod close to connecting sleeve;The U-shaped connecting piece is fixedly connected with the both sides of a pair of connecting plates arranged in the middle part of connecting sleeve by first pin;The ratchet is connected between first pin and connecting plate and is engaged with the rack on support rod;The one end of the driving dog is hinged to the inboard of U-shaped connecting piece by second pin;The other end of the driving dog is engaged with the top of the ratchet;First spring is connected on the one side of the driving dog, and the other end of the first spring is connected to the U-shaped connecting piece, when driving rod is rotated around first pin upwards, driving dog makes ratchet rotate to one side, and then drives connecting sleeve to ascend along support rod;The lifting mechanism further includes brake dog, and the brake dog is hinged to connecting sleeve and located below the ratchet by third pin;The rear end of the brake dog is engaged with the bottom of the ratchet, and second spring is arranged on the one side of the brake dog, and one end of the second spring is fixedly connected with the brake dog, and the other end of the second spring is fixedly connected to the inner wall of connecting sleeve;When driving rod is rotated around first pin downwards, the rear end of the driving dog moves to the front end of connecting sleeve close to brake dog and contacts and presses, to make the front end of driving dog and the rear end of brake dog move to the direction away from ratchet gear ring.

[0005] Further, the lifting hook body is arranged on the front side and the left and right sides of the connecting sleeve.

[0006] Compared with prior art, the utility model has the advantages that:

[0007] The U-shaped card quick dismantling device designed in the utility model only needs to pull driving rod upwards when in use, and ratchet drives ratchet to rotate along rack, so that U-shaped card can be pulled out and dismantled upwards by lifting hook body, without using hand hammer, to avoid the risk of bruising hand, realize the quick, safe and efficient dismantling of U-shaped card, and greatly improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is whole structure schematic diagram of the utility model U-shaped card quick dismantling device;

[0009] Figure 2 It is the use state diagram of the utility model lifting mechanism when lifting;

[0010] Figure 3 It is the use state diagram of the utility model lifting mechanism when ratchet is unlocked.

[0011] wherein:

[0012] 1 - rack, 2 - support rod, 3 - support base, 4 - connecting sleeve, 5 - lifting hook body, 6 - drive rod, 7 - U-shaped connecting piece, 8 - ratchet, 9 - drive pawl, 10 - first pin, 11 - connecting plate, 12 - second pin, 13 - first spring, 14 - brake pawl, 15 - third pin, 16 - second spring. DETAILED DESCRIPTION

[0013] In the following, in order to facilitate the understanding of the technical scheme of the utility model by those skilled in the art, further description will be made with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0014] In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, that one or more embodiments can be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques have been omitted in order to avoid needlessly obscuring the concept of the utility model.

[0015] Please refer to Figure 1 , the utility model U type card quick dismantling device, including a rack 1 with support rod 2 of one side, support rod 2 bottom setting support base 3, support rod 2 on the sleeve connecting sleeve 4, connecting sleeve 4 rear end middle part setting is used to drive connecting sleeve 4 along support rod 2 upward sliding lifting mechanism, connecting sleeve 4 outside setting lifting hook body 5. Specific implementation, lifting hook body 5 is set in the front side and left and right sides of connecting sleeve 4, in turn facilitate the removal of different angles U type card.

[0016] Please combine Figures 1-3 As shown in the drawing, in the embodiment, the lifting mechanism includes drive rod 6, U-shaped connecting piece 7, ratchet 8 and drive pawl 9. U-shaped connecting piece 7 is arranged at one end of drive rod 6 close to connecting sleeve 4, U-shaped connecting piece 7 is fixedly connected with a pair of connecting plates 11 on both sides through first pin 10 arranged in the middle of connecting sleeve 4, ratchet 8 is connected between first pin 10 and connecting plate 11 and is in gear engagement with rack 1 on support rod 2, drive pawl 9 is hingedly connected to the inner side of U-shaped connecting piece 7 through second pin 12 at one end, the other end of drive pawl 9 is engaged with the top of ratchet 8, first spring 13 is connected to one side of drive pawl 9, and the other end of first spring 13 is connected to U-shaped connecting piece 7, as Figure 2As shown, when the upward-lifting drive rod 6 rotates around the first pin 10, the drive pawl 9 causes the ratchet 8 to rotate to one side, as shown in the figure. This ensures that the ratchet 8 can only rotate counterclockwise and not clockwise. The first spring 13 ensures that the drive pawl 9 remains engaged with the ratchet 6, thereby driving the connecting sleeve 4 to rise along the support rod 2. By repeatedly lifting the drive rod 6, the ratchet 8 continuously drives the connecting sleeve 4 to rise along the support rod 2, allowing the lifting hook to catch the U-shaped clip and pull it out.

[0017] In this embodiment, the lifting mechanism also includes a brake pawl 14. The brake pawl 14 is hinged to the connecting sleeve 4 via a third pin 15 and located below the ratchet 8. The rear end of the brake pawl 14 engages with the bottom of the ratchet 8, and its movement direction is aligned with that of the drive pawl 9. A second spring 16 is provided on one side of the brake pawl 14. One end of the second spring 16 is fixedly connected to the brake pawl 14, and the other end is fixedly connected to the inner wall of the connecting sleeve 4. The second spring 16 ensures that the brake pawl 14 remains engaged with the ratchet 8 at all times. Because it is necessary to maintain the stability of the connecting sleeve 4 for a period of time during the upward lifting process, a brake pawl 14 with the same principle as the drive pawl 9 is provided inside the connecting sleeve 4 to prevent the connecting sleeve 4 from retracting downwards during operation. The engagement between the drive pawl 9 and the brake pawl 14 ensures the stability of the ratchet 6, thereby preventing the connecting sleeve 4 from retracting downwards.

[0018] like Figure 3 As shown, in this embodiment, when the pressure drive rod 6 rotates around the first pin 10, the rear end of the drive pawl 9 extends towards the front end of the connecting sleeve 4 and contacts the pressure, so that the front end of the drive pawl 9 and the rear end of the brake pawl 14 move away from the ratchet 8 gear ring, which facilitates the unlocking of the ratchet and realizes the rapid reset of the connecting sleeve 4.

[0019] In summary, the U-shaped clip quick removal device designed in this utility model only requires pulling the drive rod upwards, causing the pawl to push the ratchet to rotate along the rack, which in turn lifts the hook body to pull the U-shaped clip upwards and remove it. This eliminates the need for a hammer, avoiding the risk of hand injury, and achieves quick, safe, and efficient removal of U-shaped clips, greatly improving work efficiency.

[0020] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A quick release device for a U-shaped bracket, characterized in that, The utility model provides a lifting mechanism and lifting hook body, the lifting mechanism includes a support rod (2) with a rack (1) on one side, a support base (3) is arranged at the bottom of the support rod (2), a connecting sleeve (4) is sleeved on the support rod (2), a lifting mechanism for driving the connecting sleeve (4) to slide upwards along the support rod (2) is arranged at the middle of the rear end of the connecting sleeve (4), a lifting hook body (5) is arranged on the outer side of the connecting sleeve (4), wherein the lifting mechanism includes a drive rod (6), a U-shaped connecting piece (7), a ratchet wheel (8) and a drive pawl (9), the U-shaped connecting piece (7) is arranged at one end of the drive rod (6) close to the connecting sleeve (4), the U-shaped connecting piece (7) is fixedly connected with a pair of connecting plates (11) arranged at the middle of the connecting sleeve (4) through a first bolt (10) on both sides, the ratchet wheel (8) is connected between the first bolt (10) and the connecting plate (11) and is in gear engagement with the rack (1) on the support rod (2), one end of the drive pawl (9) is hinged to the inner side of the U-shaped connecting piece (7) through a second bolt (12), the other end of the drive pawl (9) is engaged with the top of the ratchet wheel (8), a first spring (13) is connected to one side of the drive pawl (9), and the other end of the first spring (13) is connected to the U-shaped connecting piece (7), when the drive rod (6) is lifted upwards and rotated around the first bolt (10), the drive pawl (9) makes the ratchet wheel (8) rotate to one side, thereby driving the connecting sleeve (4) to ascend along the support rod (2), the lifting mechanism further includes a brake pawl (14), the brake pawl (14) is hinged to the connecting sleeve (4) below the ratchet wheel (8) through a third bolt (15), the rear end of the brake pawl (14) is engaged with the bottom of the ratchet wheel (8), a second spring (16) is arranged on one side of the brake pawl (14), one end of the second spring (16) is fixedly connected with the brake pawl (14), and the other end of the second spring (16) is fixedly connected to the inner wall of the connecting sleeve (4), when the drive rod (6) is pressed downwards and rotated around the first bolt (10), the rear end of the drive pawl (9) moves towards the front end of the connecting sleeve (4) close to the brake pawl (14) and is contacted and pressed, so that the front end of the drive pawl (9) and the rear end of the brake pawl (14) move away from the gear ring of the ratchet wheel (8).

2. The U-shaped card quick removal device according to claim 1, wherein, The lifting hook body (5) is arranged on the front side and the left and right sides of the connecting sleeve (4).

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