CN207260973U - A kind of oild chuck formula drill rod grip device - Google Patents

Abstract

The utility model provides a kind of oild chuck formula drill rod grip device, including hollow shaft, thrust is axially set gradually along hollow shaft and unloads mount components and normally closed clamping component, normally closed clamping component includes disc spring, slide mass and slips body, slips body is embedded on hollow shaft axial wall, slide mass and slips are bonded setting along the conical surface, and disc spring is held out against in one end of slide mass ensures slips in axial enclasping force, and thrust is unloaded mount components and held out against in the other end of slide mass provides unloading force to slips.The oild chuck formula drill rod grip device of the utility model, while efficiency is improved, greatly improves service life, built-in component on the original basis improve by the service life, has the characteristics that service life is long, failure rate is low, maintenance is easy, cost-effective.

Description

A kind of oild chuck formula drill rod grip device

Technical field

Drilling equipment field is the utility model is related to, is the power part of colliery tunnel deep hole rig, is specially one kind Oild chuck formula drill rod grip device.

Background technology

With the continuous development of coal mining technology, the underground drill rig technology in colliery is constantly ripe, and fixed churn is set It is standby to be substituted by track-mounted drill.The core of caterpillar drilling machine is the power head part of drilling machine punching, and power head is mainly Drilling rod provides turning moment, and drilling machine provides motive force in itself, and drill bit is installed on drilling rod, in the common of motive force and turning moment Destructive power is formed to rock under effect, so as to form continuous boring capacity.

Current driving force head mainly has the drive form of drilling rod two kinds, and one kind is directly connected for drilling rod with power head by screw thread Connect, this form is safe and reliable, but every dozen of complete drilling rods supplement drilling rod after just needing dismounting drilling rod, and work efficiency is relatively low Under；Another to clamp drilling rod by hydraulic pressure for power head, clamping force forms frictional force to drive drilling rod to rotate, this knot The advantage of structure is that continuously supplement compares drilling rod so as to be formed behind power head with regard to that can supplement drilling rod without dismounting drilling rod Continuous bore operation process, its efficiency significantly improve, its shortcoming is very short for the damage cycle of built-in component.

The shortcomings that current more typical chuck structure is glue bucket chuck, and this chuck is most fatal is that service life is special Short, general service life is 15 days, and with continuing on for drilling machine, the glue bucket service life gradually reduces, and drilling worker is almost under per tour Well will carry on the back a glue bucket spare part.Glue bucket is once damage, and subsurface environment and light are particularly poor, and repair and replacement are inconvenient, in addition Hydraulic fluid leak in replacement process, very big inconvenience is brought to user.

In addition, a kind of oild chuck structure is recorded in patent " a kind of constant-closed type hydraulic chuck ", although the structure Slips clamping, the hydraulic pressure unloading to drilling rod are realized, but the position relationship of all parts is unreasonable in the structure, causes in reality Occur that disc spring is fragile during the use on border, the service life of slips and chuck body serious wear, i.e. internal parts The problem of not high.

Utility model content

For in the prior art the defects of and deficiency, the utility model provide a kind of oild chuck formula slip dress Put, while work efficiency is improved, improve the service life of drill rod grip device.

To reach above-mentioned purpose, the technical solution that the utility model is taken includes：

A kind of oild chuck formula drill rod grip device, including hollow shaft, thrust unloading structure is axially set gradually along hollow shaft Part and normally closed clamping component, thrust unload the drive end that mount components are located at hollow shaft, and normally closed clamping component is located at the driven of hollow shaft End；

Normally closed clamping component includes disc spring, slide mass and slips body, and slips body is coaxially embedded in hollow shaft axial wall, sliding Body is bonded along the conical surface with slips body and is arranged, and disc spring is held out against in one end of slide mass ensures slips body in axial enclasping force, thrust Unload mount components the other end of slide mass hold out against give slips provide unloading force.

Specifically, the slide mass carries the cylindrical member of disc spring erecting bed for outer wall, set on disc spring erecting bed Disc spring installation position, the inner wall of slide mass are the slips binding face of taper, taper big mouth of the disc spring erecting bed close to slips binding face End is coaxially disposed, and disc spring carries out holding out against for slide mass in the osculum end end face of disc spring erecting bed and the taper surface of slide mass at the same time.

Best, the width of the disc spring erecting bed is the 2~3 of the osculum end end face width of the taper surface of slide mass Times, taper angle β=16~32 ° of the slips binding face of slide mass.

Specifically, the slips body includes slips and check ring, slips is right-angled trapezium component, the taper surface of slips For binding face, the right-angle surface of slips holds face tightly for alloy, hard alloy blocks is set side by side with alloy holding face, and embrace in alloy Circumferentially arranged check ring installation position on tight face.

Further, set on the binding face of slips multiple in conplane boss.

Preferably, slide mass is bonded conicity angles alpha=8~16 ° set with slips body along the conical surface.

Preferably, the hollow shaft axis wall thickness of the hollow shaft axis wall thickness h1 of slips body installation end and non-slips body installation end The thickness difference of h2 is 9~11mm.

In addition, it is hydraulic cylinder and piston body that thrust, which unloads mount components, the displacement of piston body is opposite for slide mass and slips Mobile to provide power, the stroke distances of hydraulic cylinder are less than the distance of the total deformation of disc spring.

In addition, further including slips end cap, disc spring is arranged between slips end cap and slide mass, makes slide mass along boring to holding out against Slips, slips holddown spring baffle ring provide enclasping force to drilling rod.

Alternatively, further including shell, dustproof cover, the shell of dustproof cover and shell composition clamping component are also set up outside slips end cap Body, the housing of clamping component are connected with hydraulic cylinder, and turning sleeve and ball bearing are also set up between piston body and slide mass.

Compared with prior art, include the advantages of the utility model：

The oild chuck formula drill rod grip device of the utility model, passes through the position relationship between device various components inside Adjustment, the setting of the specific structural details of all parts, makes the present apparatus to be improved each in device while efficiency is improved The service life of component, has the characteristics that service life is long, failure rate is low, maintenance is easy, cost-effective.

Brief description of the drawings

Fig. 1 is the overall structure diagram of the oild chuck formula drill rod grip device of the utility model；

Fig. 2 is the size relationship figure of component in Fig. 1；

Fig. 3 is the sectional view of the slide mass in Fig. 1；

Fig. 4 is the front view of the slips in Fig. 1；

Fig. 5 is the top view of Fig. 4；

Fig. 6 is the overall structure diagram of the oild chuck formula drill rod grip device in embodiment two；

Each label is expressed as in figure：1- dustproof covers, 2- slips end cap, 3- disc springs, 4- shells, the first ball bearings of 5-, 6- liquid Compressing cylinder, 7- piston bodies, 8- slips, 801- binding faces, 802- hold alloy-layer, 803- check rings installation position, 9- spring catch tightly Circle, 10- slide masses, 101- disc springs erecting bed, 102- slips binding face, 103- disc springs installation position, 11- turning sleeves, 12- are hollow Axis, 13- hollow shafts end cap, 14- reducing gear shells end cap, the second ball bearings of 15-, 16- axle sleeves, 17- reducing gears shell, 18- reduction gearing；

The sky of the taper angle of α-slips, the non-slips body installation end of hollow shaft axis wall thickness, h2- of h1- slips body installation ends The taper angle of mandrel axis wall thickness, β-slips binding face；

The utility model is illustrated below in conjunction with specification drawings and specific embodiments.

Embodiment

In order to provide a kind of oild chuck formula drill rod grip device, the reasonability not being concerned only between structure, while also lead to Cross the setting of the position relationship between the setting of planform, structure, the service life of parts carries in realization device internal structure Height, then the setting by the angle between parts, thickness equidimension, while production cost is reduced, moreover it is possible to further The service life of parts is improved, extends the usage time of product.

The oild chuck formula drill rod grip device of the utility model, including hollow shaft, axially set gradually along hollow shaft and push away Power unloads mount components and normally closed clamping component, and normally closed clamping component includes disc spring, slide mass and slips body, and slips body is coaxially embedded In hollow shaft axial wall, it is that slips body is embedded at the non-end of hollow shaft that slips body described herein, which is embedded represented in hollow shaft axial wall, The position in portion, most people think that slips body, which is not arranged in end, can bring the problem of process is complicated and dismounting is inconvenient, In fact, utility model people is had found by studying, and is not arranged in end, will not only be increased manufacture cost, simultaneously because structure phase Harmony between mutually, such as hollow shaft can preferably be protected to slips body, and slips body can be reduced to end structural pipe wall in itself Radial direction lossy, both coordinate after increase all parts service life, reduce production cost on the contrary；Slide mass and slips Body is arranged along conical surface fitting, and disc spring is held out against in one end of slide mass ensures that slips unloads mount components and exist in axial enclasping force, thrust The other end of slide mass is held out against provides unloading force to slips.The setting of this structure, is realized to boring under the conditions of the holding out against of disc spring The lasting normally closed clamping of bar, only when replacing drilling rod or being unloaded to drilling rod, just needs thrust to unload the work of mount components, because This, improves the service life that thrust unloads mount components to a certain extent；

Best, thrust unloads the drive end that mount components are located at hollow shaft, i.e., dynamic positioned at hollow shaft and motor or gear reducer etc. The connecting pin of power component, normally closed clamping component are located at the driven end of hollow shaft, and the benefit so set is the power of high-speed rotation Component unloads mount components (such as hydraulic cylinder) direct neighbor with the relatively simple thrust of structure, due to the process to work in power part In, thrust unloads mount components and never works, will not be to power part so thrust unloaded mount components are disposed adjacent with power part The work of part has an impact, and the work of drilling rod will not be had an impact, and by reasoning unload mount components by power part with often Clamping component interval is closed, two courses of work for clamping and rotating are separated to a certain extent, make two courses of work one Determine in degree separation while also correlation, ensure that the stability that disc spring is held out against, the design of this spline structure, is utility model people Summarize what is obtained in the actual course of work, and the such conclusion drawn by substantial amounts of contrast experiment, utility model The thrust of having tested of people repeatedly unloads mount components and the connection relation of normally closed clamping component and power part, finds power part, pushes away The course of work that power unloads mount components and normally closed clamping component three is successively set in hollow shaft is most smooth, and between each other not It can have an impact, can not only cooperate what the course of work of all parts cooperateed with, while ensure that the independence of all parts Property, the working loss of reduction to a certain extent, adds the service life of component.

With reference to Fig. 3, slide mass carries the cylindrical member of annular convex platform for outer wall, and annular convex platform is disc spring erecting bed, dish Disc spring installation position is set on spring erecting bed, and the inner wall of slide mass is taper surface, i.e. slips binding face, and disc spring erecting bed is close to slips The taper surface big opening end of binding face is coaxially disposed, and disc spring is at the same time in the osculum end end face of disc spring erecting bed and the taper surface of slide mass Carry out holding out against for slide mass；The position relationship of disc spring and slide mass, has a mistake held out against equivalent to the entirety to slide mass Journey, makes the setting of disc spring in irregular shape, is set according to the shape of slide mass outer wall, compared to only to the disc spring peace of slide mass The structure that dress platform part is held out against, the pressure bigger not only integrally held out against, is additionally, since point of the power of disc spring irregular structure Dissipate, while improve the service life of disc spring and the service life of slide mass.

Best, it is experimentally confirmed, the width of disc spring erecting bed is the osculum end end face width of the taper surface of slide mass 2~3 times, taper angle β=16~32 ° of the slips binding face of slide mass.The setting of such size and angle, can not only make Frictional force during slide mass is bonded with slips is minimum, while also ensures the maximum of the position relationship between disc spring and slide mass The extension that the service life for ensureing both in degree is tried one's best；

With reference to Figure 4 and 5, slips is the component similar to right-angled trapezium, and the taper surface of slips is binding face, best, patch Multiple boss are carried on conjunction face, increase the frictional force of binding face, the right-angle surface of slips holds face tightly for alloy, on alloy holding face simultaneously Row are provided with hard alloy blocks, and the circumferentially arranged check ring installation position on alloy holding face, and check ring is set for card；

Conicity angles alpha=8~16 ° of slips, the taper angle of the slips binding face of slide mass coordinate the taper angle of slips to set, Direction on the contrary, make slide mass be bonded with slips during frictional force it is minimum, it is mutual to reduce by two components fitted closely Abrasion, it is further provided the service life of component；The hollow shaft axis wall thickness h1 of slips body installation end is installed with non-slips body The thickness difference of the hollow shaft axis wall thickness h2 at end is 9~11mm, it is ensured that the contact surface of slips and hollow shaft axial wall is not less than 70%, ensure the fastness that slips is set, while slips is protected be subject to hollow shaft to a certain extent, is increased it and is used the longevity Life.

It is hydraulic cylinder and piston body that thrust, which unloads mount components, and the displacement of piston body is the mobile offer power of slide mass, liquid The stroke distances of compressing cylinder are less than the distance of the total deformation of disc spring, avoid damage and the Hydraulic System Fever of oil cylinder.

The present apparatus further includes slips end cap, and disc spring is arranged between slips end cap and slide mass, slide mass edge is bored to top Tight slips, slips holddown spring baffle ring provide enclasping force to drilling rod.

In addition, further including shell, dustproof cover, the shell of dustproof cover and shell composition clamping component are also set up outside slips end cap Body, the housing of clamping component are connected with hydraulic cylinder, and turning sleeve and ball bearing, turning sleeve are also set up between piston body and slide mass Radial constraint can be carried out to ball bearing, less ball bearing moves radially the parts damages brought.

Operation principle is：Disc spring provides clamping force on chuck, and clamped condition is long closed state, i.e. slips is clamped condition, Clamping force forms frictional force and transmits moment of torsion.Hydraulic cylinder provides dechucking forces, by the conical surface of slide mass and the mutual wedge of slips into formation Dechucking forces, at this time slide mass move up, disc spring is compressed, slips check ring hold out against effect under move radially outward, block Orostachys fimbriatus drives the drilling rod of clamping, realizes the unloading of drilling rod.Slips can rotate at a high speed after clamping drilling rod, so as to form boring action.Add After tight drilling rod can fair speed rotation, also can low speed rotation.High-speed rotating component includes：Hollow shaft, turning sleeve, sliding Body, slips upper cover, slips, dustproof cover and the disc spring of front end.Dustproof cover play the guiding role for installation drilling rod and bore operation When centralizing function.

Embodiment one：

With reference to Fig. 1 and 2, the oild chuck formula drill rod grip device of the utility model includes hollow shaft 10, along hollow shaft 10 Axially setting gradually thrust unloads mount components and normally closed clamping component, and thrust unloads the drive end that mount components are located at hollow shaft 10, normally closed Clamping component is located at the driven end of hollow shaft 10；

Normally closed clamping component includes disc spring 3, slide mass 10 and slips body, slips body be embedded in 10 axial wall of hollow shaft (away from Have a certain distance from 10 end of hollow shaft, which is about the 1/3~1/2 of slips height), slide mass 10 and slips body edge Conical surface fitting is arranged, and disc spring 3 holds out against the enclasping force for ensureing slips body in axial direction to drilling rod, thrust unloading in one end of slide mass 10 Component holds out against the drilling rod offer unloading force held tightly to slips body in the other end of slide mass 10.

With reference to Fig. 3, slide mass 10 carries the cylindrical member of annular convex platform for outer wall, and annular convex platform is disc spring erecting bed 101, disc spring installation position 103 is set on disc spring erecting bed 101, the inner wall of slide mass 10 is taper surface, i.e. slips binding face 102, Disc spring erecting bed 101 is coaxially disposed close to the taper surface big opening end of slips binding face 102, and disc spring 3 is at the same time in disc spring erecting bed 101 Holding out against for slide mass 10 is carried out with the osculum end end face of the taper surface of slide mass 10；The width of disc spring erecting bed 101 is slide mass 2 times of the osculum end end face width of 10 taper surface, the taper of the slips binding face 102 of slide mass 10 is 16 °.

With reference to Figure 4 and 5, slips 8 is the component similar to right-angled trapezium, and the taper surface of slips 8 is binding face 801, best , multiple boss are carried on binding face 801, increases the frictional force of binding face, is set in the right-angle surface of slips 8 and hold alloy-layer tightly 802, hold tightly and hard alloy blocks are set side by side with alloy-layer 802, and the circumferentially arranged check ring on alloy-layer 802 is held tightly Installation position 803, sets check ring 9, slips 8 and check ring 9 form slips body for card；

Conicity angles alpha=8 ° of slips 8, the taper angle angle of the taper angle of slips 8 and the slips binding face 102 of slide mass 10 Identical, direction is opposite；The hollow shaft axis wall thickness of the hollow shaft axis wall thickness h1 of slips body installation end and non-slips body installation end The thickness difference of h2 is 10.5mm, wall thickness 35mm at thickening, does not thicken place wall thickness 24.5mm, and increase wall thickness can extend slips in groove The stroke of slip, play the guiding role；It can ensure that the contact surface of slips and hollow shaft axial wall is not less than 70%, ensure that slips is set Fastness.

Thrust, which unloads mount components, includes hydraulic cylinder 6 and piston body 7, the mobile offer of the displacement of piston body 7 to slide mass 10 Power, the stroke distances of hydraulic cylinder 6 are less than the distance of the total deformation of disc spring 3.Avoid damage and the hydraulic system hair of oil cylinder Heat.

Slips end cap 2 is further included, disc spring 3 is arranged between slips end cap 2 and slide mass 10, makes slide mass 10 along cone to top Tight slips 8,8 holddown spring baffle ring 9 of slips provide enclasping force to drilling rod.

Shell 4 is further included, dustproof cover 1 is also set up outside slips end cap 2, dustproof cover 1 forms the shell of clamping component with shell 4 Body, the housing of clamping component are connected with hydraulic cylinder 6, and 11 and first ball of turning sleeve is also set up between piston body 7 and slide mass 10 Bearing 5, turning sleeve 11 can carry out radial constraint to the first ball bearing 5, and less first ball bearing 5 moves radially the portion brought Part damages.

For the hardness of slips 8 using the ordinary hard after quenched, slide mass 10 uses nitrogen treatment, and hardness is more than HV500, and one Hard one soft stress allows soft part deformation, prevents from very stiff and demanding making equipment integrally damage.

Disc spring 3 is 29, model disc spring outside diameter × disc spring internal diameter=50 × 25.4~4.1 (mm) of disc spring 3, and hard closes Friction coefficient μ=0.5 between gold bullion and drilling rod, clamping drill pipe diameter isWithTwo kinds of specifications.Hydraulic oil The stroke of cylinder is 26mm, and deflection is 1.1mm during the pressing of single disc spring, so the total deformation of disc spring is：29 × 1.1= 31.9mm。

Embodiment two：

With reference to Fig. 6, the present embodiment is by the oild chuck formula drill rod grip device in embodiment one and gear reducer and power Motor coordinates the experiment for carrying out overall work：

Power section, power section can be equipped with the variable displacement motor that discharge capacity is 160ml/r or 200ml/r.160ml/r motors Parameter：0~160ml/r of discharge capacity, rated pressure 40MPa；

Reducing gear is secondary speed reduction box, and the first gear-stage velocity ratio is i1=57/21=2.71；Second gear-stage velocity ratio is i2=80/ 29=2.76, resultant gear ratio are i1 × i2=80 × 57/ (21 × 29)=7.5.Reduction gearing is efficient helical gear, helix angle Registration, gear load can be improved.

Secondary speed reduction box includes hollow shaft end cap 13, reducing gear shell end cap 14, the second ball bearing 15, axle sleeve 16, subtracts Fast mechanism shell 17 and reduction gearing 18, the course of work are the course of work of usual gear reducer.

Studied by actual experimentation, all parts in the oild chuck formula drill rod grip device of the utility model Reasonable cooperation, can realize that the service using life improves 5~10 times of technique effect, greatly increase the practicality of the present apparatus Property and market adaptability, be especially suitable in the long-term underground work of coal enterprise, the work of a large amount of high load capacities, improve device Service life, reduce production cost.

Claims (10)

1. A kind of 1. oild chuck formula drill rod grip device, it is characterised in that including hollow shaft (12), along hollow shaft (12) it is axial according to Secondary setting thrust unloads mount components and normally closed clamping component, and thrust unloads the drive end that mount components are located at hollow shaft (12), normally closed clamping Component is located at the driven end of hollow shaft (12)；

   Normally closed clamping component includes disc spring (3), slide mass (10) and slips body, and slips body is coaxially embedded in hollow shaft (12) axial wall Interior, slide mass (10) is bonded with slips body along the conical surface to be arranged, and disc spring (3) is held out against in one end of slide mass (10) ensures that slips body exists Axial enclasping force, thrust is unloaded mount components and held out against in the other end of slide mass (10) provides unloading force to slips body.
2. 2. oild chuck formula drill rod grip device as claimed in claim 1, it is characterised in that the slide mass (10) is outer Cornice has the cylindrical member of disc spring erecting bed (101), sets disc spring installation position (103) on disc spring erecting bed (101), slide mass (10) inner wall is the slips binding face (102) of taper, and disc spring erecting bed (101) is big close to the taper of slips binding face (102) Mouthful end is coaxially disposed, disc spring (3) while in the progress of the osculum end end face of disc spring erecting bed (101) and the taper surface of slide mass (10) Slide mass (10) are held out against.
3. 3. oild chuck formula drill rod grip device as claimed in claim 2, it is characterised in that the disc spring erecting bed (101) width is 2~3 times of the osculum end end face width of the taper surface of slide mass (10), the taper of slips binding face (102) Angle beta=16~32 °.
4. 4. oild chuck formula drill rod grip device as claimed in claim 1, it is characterised in that the slips body includes slips (8) and check ring (9), slips (8) are right-angled trapezium component, and the taper surface of slips (8) is binding face (801), slips (8) Set in right-angle surface and hold alloy-layer (802) tightly, held tightly and hard alloy blocks are set side by side with alloy-layer (802), and closed holding tightly Circumferentially arranged check ring installation position (803) in layer gold (802).
5. 5. oild chuck formula drill rod grip device as claimed in claim 4, it is characterised in that the binding face in slips (8) (801) set on multiple in conplane boss.
6. 6. the oild chuck formula drill rod grip device as described in claim 1,2,3,4 or 5, it is characterised in that slide mass (10) With slips body conicity angles alpha=8~16 ° set are bonded along the conical surface.
7. 7. the oild chuck formula drill rod grip device as described in claim 1,2,3,4 or 5, it is characterised in that slips body is installed The hollow shaft axis wall thickness h1 at end and the thickness difference of the hollow shaft axis wall thickness h2 of non-slips body installation end are 9~11mm.
8. 8. the oild chuck formula drill rod grip device as described in claim 1,2,3,4 or 5, it is characterised in that thrust unloads structure Part includes hydraulic cylinder (6) and piston body (7), and the displacement of piston body (7) is carried to slide mass (10) and the relative movement of slips (8) For power, the stroke distances of hydraulic cylinder (6) are less than the distance of the total deformation of disc spring (3).
9. 9. the oild chuck formula drill rod grip device as described in claim 1,2,3,4 or 5, it is characterised in that further include slips End cap (2), disc spring (3) are arranged between slips end cap (2) and slide mass (10), make slide mass (10) along boring to slips is held out against (8), slips (8) holddown spring baffle ring (9) provides enclasping force to drilling rod.
10. 10. oild chuck formula drill rod grip device as claimed in claim 8, it is characterised in that further include shell (4), slips Dustproof cover (1), the housing of dustproof cover (1) and shell (4) composition clamping component, the housing of clamping component are also set up outside end cap (2) It is connected with hydraulic cylinder (6), turning sleeve and ball bearing is also set up between piston body (7) and slide mass (10).