CN220081348U - High-efficiency screw - Google Patents

Abstract

The utility model discloses a high-efficiency screw rod, which comprises an upper cover, a lower cover, a driving rod and a driven rod, wherein the upper cover is provided with a plurality of screw holes; the upper cover is connected with the lower cover through a bolt assembly, the driving rod is in running fit with the upper cover, and the driven rod is in running fit with the lower cover. The driving rod is provided with two bulges, and the centers of the two bulges are symmetrically arranged on the bottom surface of the driving rod; the driven rod is provided with a groove which is matched with the bulge. The upper cover is provided with a pressure spring, the driving rod is provided with a plurality of blind holes, the upper cover is provided with a notch, and the notch is provided with a first spring and a limiting column. The utility model is provided with a driving rod and a driven rod, and the driving rod transmits rotation to the driven rod through the cooperation of the protrusion and the groove. When the driven rod rotates and is blocked, the driving rod rotates to separate the bulge from the groove, so that the driving rod cannot continuously transmit rotation to the driven rod, the situation that the rod body is broken due to overlarge torque force on the driven rod during use cannot occur, and the service life of the screw rod is prolonged.

Description

High-efficiency screw

Technical Field

The utility model relates to the technical field of screw drilling tools, in particular to a high-efficiency screw.

Background

The screw drill is an energy conversion device that converts the pressure energy of a liquid into mechanical energy. When high-pressure liquid enters the drilling tool, the rotor is forced to roll in the stator, and torque and rotating speed generated by the motor are transmitted to the transmission shaft and the drill bit through the universal shaft, so that the purpose of drilling is achieved.

When the screw drilling tool is used, the torque force born by the screw part is large, and the problem of screw fracture easily occurs. In the utility model patent with publication number CN217841538U (hereinafter referred to as "prior art 1"), a drill bit of a screw drill is disclosed, in the prior art 1, two notches are symmetrically arranged at the end of a shank, and two grooves are arranged at the end in a crisscross manner, so that the drill bit is easier to clamp and fix in the installation process, and the clamping of the drill bit is firmer and more stable, so that the drill bit can be produced and used better.

The problem that the screw rod is difficult to clamp is solved through setting up the recess in prior art 1, but after the drill bit centre gripping is firm, when the screw rod bears great moment of torsion in the course of working, the screw rod just also takes place to fracture more easily, can influence the life of device, still probably brings harm for operating personnel's personal safety under serious condition.

Disclosure of Invention

Therefore, I designed a high-efficiency screw to solve the problem of easy breakage of screw in the prior art.

The technical scheme of the utility model is as follows:

a high-efficiency screw comprises an upper cover, a lower cover, a driving rod and a driven rod; the upper cover is connected with the lower cover through a bolt assembly, the driving rod is in running fit with the upper cover, and the driven rod is in running fit with the lower cover.

The driving rod is provided with two bulges, and the centers of the two bulges are symmetrically arranged on the bottom surface of the driving rod; the bulge comprises a front end face, a rear end face and a side face, the rear end face is perpendicular to the bottom face of the driving rod, and the front end face comprises an inclined face and an arc face; the driven rod is provided with a groove which is matched with the bulge.

The upper cover is internally provided with a pressure spring, one end of the pressure spring is contacted with the upper cover, and the other end of the pressure spring is contacted with the driving rod; the driving rod is provided with a plurality of blind holes which are uniformly distributed on the side wall of the driving rod; the upper cover is provided with a notch, a first spring and a limiting column are arranged in the notch, one end of the first spring is fixedly connected with the notch, the other end of the first spring is in contact with the limiting column, and the limiting column is used for being matched with the blind hole to fix the driving rod.

In a preferred technical scheme, the lower cover comprises a left cover body and a right cover body, and the left cover body and the right cover body are connected through a bolt assembly.

In a preferred technical scheme, be provided with the buffer seat in the lower cover, the buffer seat includes baffle, lower baffle and second spring, and the both ends of second spring are respectively with last baffle and lower baffle rigid coupling, and the top view of last baffle and lower baffle is semicircle annular.

In a preferred technical scheme, a plurality of balls are arranged below the lower partition plate, and the balls are in rolling fit with the lower partition plate.

In a preferred technical scheme, the upper cover comprises a cover plate and a base body, and the cover plate is connected with the base body through screws.

In a preferred technical scheme, be provided with first post groove on the upper cover, be provided with the second post groove on the lower cover, the bottom surface of first post groove and second post groove is provided with the pilot hole, and the pilot hole is used for cooperating with the bolt assembly.

In a preferred technical scheme, one end of the limiting post is an arc surface, and the other end of the limiting post is a plane.

In a preferred technical scheme, a baffle ring is fixedly connected to the limiting column, and the baffle ring is arranged at one end close to the plane.

The beneficial effects of the utility model are as follows:

the utility model is provided with a driving rod and a driven rod, wherein the driving rod is provided with a bulge, the driven rod is provided with a groove, and the driving rod transmits rotation to the driven rod through the cooperation of the bulge and the groove. When the driven rod rotates and is blocked, the driving rod rotates to separate the bulge from the groove, so that the driving rod cannot continuously transmit rotation to the driven rod, the situation that the rod body is broken due to overlarge torque force on the driven rod during use cannot occur, and the service life of the screw rod is prolonged.

Meanwhile, the driving rod, the driven rod, the upper cover and the lower cover are all of detachable design, so that a worker can conveniently maintain equipment, and meanwhile, the universality among equipment of the same type is improved.

Drawings

FIG. 1 is one of the schematic diagrams of the present utility model;

FIG. 2 is a second schematic diagram of the present utility model;

FIG. 3 is a schematic view of a driving rod according to the present utility model;

FIG. 4 is a second schematic diagram of the driving rod of the present utility model;

FIG. 5 is a schematic view of the structure of the upper and lower covers of the present utility model;

FIG. 6 is a schematic structural view of a buffer seat according to the present utility model;

fig. 7 is a schematic diagram of the specification and the size of the compression spring.

In the figure: 100-upper cover, 110-notch, 111-first spring, 112-limit post, 113-baffle ring, 120-cover plate, 130-base, 140-first post slot, 200-lower cover, 210-second post slot, 300-driving rod, 310-protrusion, 311-front end face, 312-rear end face, 313-side face, 320-blind hole, 400-driven rod, 500-pressure spring, 600-buffer base, 610-upper baffle plate, 620-lower baffle plate, 621-ball, 630-second spring, 700-assembly hole.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings in the embodiments of the present utility model:

it should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indicator is correspondingly changed accordingly.

Furthermore, the descriptions of the "first," "second," and the like in this patent are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly including at least one such feature.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

As shown in fig. 1, 2, 3, and 4, a high efficiency screw includes an upper cover 100, a lower cover 200, a driving lever 300, and a driven lever 400; the upper cover 100 and the lower cover 200 are connected through a bolt assembly (including bolts and nuts), the driving rod 300 is in rotating fit with the upper cover 100, and the driven rod 400 is in rotating fit with the lower cover 200.

The driving rod 300 is provided with two protrusions 310, and the two protrusions 310 are arranged on the bottom surface of the driving rod 300 in a central symmetry manner; the protrusion 310 includes a front end surface 311, a rear end surface 312, and a side surface 313, the rear end surface 312 is perpendicular to the bottom surface of the driving lever 300, and the front end surface 311 includes an inclined surface and an arc surface; the driven lever 400 is provided with a groove, which is engaged with the protrusion 310.

The upper cover 100 is provided with a compression spring 500, one end of the compression spring 500 is contacted with the upper cover 100, and the other end of the compression spring 500 is contacted with the driving rod 300; the driving rod 300 is provided with a plurality of blind holes 320, and the blind holes 320 are uniformly distributed on the side wall of the driving rod 300; the upper cover 100 is provided with a notch 110, a first spring 111 and a limiting column 112 are arranged in the notch 110, one end of the first spring 111 is fixedly connected with the notch 110, the other end of the first spring 111 is contacted with the limiting column 112, and the limiting column 112 is used for being matched with the blind hole 320 to fix the driving rod 300.

In the drilling process, the driving rod 300 transmits rotation to the driven rod 400 through the cooperation of the protrusion 310 and the groove (the contact surface of the protrusion 310 and the groove can be polished to be rough so as to increase the friction between the protrusion 310 and the groove), a drill bit is arranged below the driven rod 400, and the driven rod 400 rotates to realize the drilling action. When the drilling depth is increased or rocks with high hardness are encountered, the driven rod 400 rotates only to a limited extent, but the driving rod 300 cannot drive the driven rod 400 to rotate together. The protrusion 310 is disengaged from the groove during the rotation of the driving lever 300, and the driving lever 300 moves upward to press the compression spring 500 thereabove. The driving rod 300 continuously moves upwards, the limit post 112 can enter the blind hole 320 under the action of the elastic force of the first spring 111, the driving rod 300 and the upper cover 100 are connected together through the limit post 112, at this time, the protrusion 310 is not matched with the groove, so that the rotation of the driving rod 300 can not drive the driven rod 400 to rotate, the driving rod 300 can enter an idle mode, namely, the driving rod 300 drives the upper cover 100 and the lower cover 200 to rotate, the rotation limitation of the driven rod 400 can not occur, the driving rod 300 always transmits the rotation to the driven rod 400, the torque force on the driven rod 400 is increased, the situation that the driven rod 400 is finally broken is caused, the purpose of protecting a screw is achieved, and the service life of the screw is prolonged.

In this embodiment, the working force (the maximum working load) of the compression spring 500 (the working force of the compression spring is equal to the rigidity of the compression spring multiplied by the working stroke) is used for counteracting the resistance encountered in the rotation of the driven rod 400, when the working force of the compression spring 500 cannot counteract the resistance encountered by the driven rod 400, the protrusion 310 and the groove are gradually separated from each other, and due to the design of the upper inclined surface and the cambered surface of the front end surface 311, the contact area between the protrusion 310 and the groove is gradually reduced in the process of separating the protrusion 310 from the groove, so that the friction force between the protrusion 310 and the groove is also reduced, the separation speed of the protrusion 310 and the groove is accelerated, and the driving rod 300 and the driven rod 400 are rapidly separated. According to the GB/T2089-2009, as shown in FIG. 7 (L (free height) is the length of the compression spring when not under load), the maximum working load of the compression spring (common cylindrical helical compression spring) with the nominal diameter (D) of 30mm is in the range of 24130N-52281N, the maximum working load of the compression spring with the nominal diameter of 20mm is in the range of 9784N-23236N, a worker can control the resistance of the driven rod 400 by changing the compression springs 500 with different nominal diameters (D) and spring middles (D), and can also use materials with better rigidity to manufacture the compression spring to increase the maximum working load of the compression spring 500, such as using materials such as nickel alloy, titanium alloy, nickel-molybdenum steel and the like to manufacture the compression spring 500.

Example two

As shown in fig. 5, in the present embodiment, the lower cover 200 includes a left cover body and a right cover body, which are coupled by a bolt assembly. The lower cover 200 is designed to be separated, which facilitates the assembly of the lower cover 200 with the driven lever 400. Meanwhile, if the lower cover 200 is damaged, only the damaged half cover body needs to be replaced, so that the maintenance cost is reduced.

Example III

As shown in fig. 2 and 6, in the present embodiment, a buffer seat 600 is disposed in the lower cover 200, the buffer seat 600 includes an upper partition 610, a lower partition 620, and a second spring 630, two ends of the second spring 630 are fixedly connected with the upper partition 610 and the lower partition 620, and a top view of the upper partition 610 and the lower partition 620 is in a semicircular shape. When the protrusion 310 and the groove are disengaged, the buffer seat 600 can prevent the downward force of the driven lever 400 from being directly applied to the lower cover 200, reducing the influence of the force when the driving lever 300 is separated from the driven lever 400 on the upper cover 100 and the lower cover 200.

Example IV

As shown in fig. 6, in the present embodiment, a plurality of balls 621 are provided below the lower partition 620, and the balls 621 are in rolling engagement with the lower partition 620. When the driving rod 300 enters idle running, the upper cover 100 and the lower cover 200 rotate along with the driving rod 300, and the rolling balls 621 are disposed under the lower partition 620 to change the friction between the lower cover 200 and the lower partition 620 from sliding friction to rolling friction, so as to prevent the lower partition 620 from rotating under the action of friction force, and damage the second spring 630.

Example five

As shown in fig. 5, in the present embodiment, the upper cover 100 includes a cover plate 120 and a base 130, and the cover plate 120 is connected to the base 130 by screws. When the driving rod 300 needs to be restored to the original position, only the screw needs to be removed to separate the cover plate 120 and the seat body 130, and then the limit post 112 is taken out from the blind hole 320, so that the driving rod 300 can be pushed back to the original position.

Example six

As shown in fig. 5, in the present embodiment, the upper cover 100 is provided with the first column groove 140, the lower cover 200 is provided with the second column groove 210, and the bottom surfaces of the first column groove 140 and the second column groove 210 are provided with the fitting holes 700, and the fitting holes 700 are used to be engaged with the bolt assembly. The first and second column grooves 140 and 210 can reduce the material consumption of the upper cover 100 and the lower cover 200, and meanwhile, the first and second column grooves 140 and 210 can guide the bolt assembly, so that workers can conveniently connect the upper cover 100 and the lower cover 200.

Example seven

As shown in fig. 2, in the present embodiment, one end of the limiting post 112 is a cambered surface, and the other end of the limiting post 112 is a plane. The arc surface contacts with the sidewall of the driving rod 300, and reduces friction between the limit post 112 and the driving rod 300 when the driving rod 300 moves upward. And when spacing post 112 and blind hole 320 cooperation, the cambered surface can play the effect of direction centering, prevents spacing post 112 and the direct striking of blind hole 320 border and makes spacing post 112 or blind hole 320 impaired.

Example eight

As shown in fig. 2, in the present embodiment, a stop ring 113 is fixedly connected to the limiting post 112, and the stop ring 113 is disposed at one end close to the plane. The maximum cross-sectional area of the stopper post 112 is smaller than the cross-sectional area of the blind hole 320, and the area of the circle formed by the outer ring of the stopper ring 113 is larger than the cross-sectional area of the blind hole 320. When the limit post 112 is taken out of the blind hole 320, the limit post 112 can be pried out of the blind hole 320 from the baffle ring 113, so that the separation of the limit post 112 and the blind hole 320 is easier.

The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present utility model, including by way of example only, and not by way of limitation, any modifications, equivalents, or improvements thereto should be construed as falling within the spirit and scope of the present utility model.

Claims (8)

1. The utility model provides a high-efficient screw rod which characterized in that: comprises an upper cover (100), a lower cover (200), a driving rod (300) and a driven rod (400); the upper cover (100) is connected with the lower cover (200) through a bolt assembly, the driving rod (300) is in rotary fit with the upper cover (100), and the driven rod (400) is in rotary fit with the lower cover (200);

two bulges (310) are arranged on the driving rod (300), and the two bulges (310) are arranged on the bottom surface of the driving rod (300) in a central symmetry manner; the bulge (310) comprises a front end face (311), a rear end face (312) and a side face (313), the rear end face (312) is perpendicular to the bottom face of the driving rod (300), and the front end face (311) comprises an inclined face and an arc face; the driven rod (400) is provided with a groove which is matched with the protrusion (310);

a pressure spring (500) is arranged in the upper cover (100), one end of the pressure spring (500) is contacted with the upper cover (100), and the other end of the pressure spring (500) is contacted with the driving rod (300); a plurality of blind holes (320) are formed in the driving rod (300), and the blind holes (320) are uniformly distributed on the side wall of the driving rod (300); the upper cover (100) is provided with a notch (110), a first spring (111) and a limiting column (112) are arranged in the notch (110), one end of the first spring (111) is fixedly connected with the notch (110), the other end of the first spring (111) is contacted with the limiting column (112), and the limiting column (112) is used for being matched with the blind hole (320) to fix the driving rod (300).

2. A high efficiency screw as defined in claim 1, wherein: the lower cover (200) comprises a left cover body and a right cover body, and the left cover body is connected with the right cover body through a bolt assembly.

3. A high efficiency screw as defined in claim 1, wherein: the lower cover (200) is internally provided with a buffer seat (600), the buffer seat (600) comprises an upper baffle (610), a lower baffle (620) and a second spring (630), two ends of the second spring (630) are fixedly connected with the upper baffle (610) and the lower baffle (620) respectively, and the top views of the upper baffle (610) and the lower baffle (620) are semicircular.

4. A high efficiency screw as defined in claim 3, wherein: a plurality of balls (621) are arranged below the lower partition plate (620), and the balls (621) are in rolling fit with the lower partition plate (620).

5. A high efficiency screw as defined in claim 1, wherein: the upper cover (100) comprises a cover plate (120) and a base body (130), and the cover plate (120) is connected with the base body (130) through screws.

6. A high efficiency screw as defined in claim 1, wherein: the upper cover (100) is provided with a first column groove (140), the lower cover (200) is provided with a second column groove (210), the bottom surfaces of the first column groove (140) and the second column groove (210) are provided with assembly holes (700), and the assembly holes (700) are used for being matched with the bolt assemblies.

7. A high efficiency screw as defined in claim 1, wherein: one end of the limiting column (112) is an arc surface, and the other end of the limiting column (112) is a plane.

8. A high efficiency screw as defined in claim 7, wherein: the limit column (112) is fixedly connected with a baffle ring (113), and the baffle ring (113) is arranged at one end close to the plane.