CN2424850Y - Water-proof guide for water drill - Google Patents

Abstract

The utility model relates to a water-proof guide for a water drill, which is composed of four parts of a sealing water gathering base (1), a guiding slide bar assembly (2), a stepwise drill feed mechanism (3) and a quick setting fixing mechanism (4), wherein, the center of the lower half part of the gate-shaped water gathering base (1) passes through a water gathering channel (7) of a diamond drill cylinder (6), and a sewerage discharge pipe (11) is arranged on the bottom face of the gate-shaped water gathering base (1). An acetabuliform sealing pad (8) is arranged on the end face of the water channel, and the quick setting fixing mechanism (4) is additionally arranged on the upper rim of a water channel of the base. A sliding rack (14) and a sliding rack (15) which can support a water drill are sheathed in a guiding slide bar, the stepwise drill feed mechanism (3) is sheathed in a sliding bar which is arranged between the sliding rack (14) and the sliding rack (15), and the stepwise drill feed mechanism (3) not only can feed a drill in a stepping mode, but also can draw a drill in reverse direction. The water-proof guide has the advantages of pollution prevention, reaction torque prevention, exact pilot hole, safety, labor saving, high efficiency, long service life of the drill cylinder, quick installation, quick dismounting, etc.

Description

Waterproof pilot for water drill

The utility model is a kind of waterproof pilot for water drill, is specially adapted to improve hand-held water and is drilled in concrete and brick wall drilling operation in air-conditioning, the hot-water heating installation.Existing hand-held water bores owing to there is not reliable and practical sealing collection water delivery device, do not support the leading truck that water bores weight and anti-reaction torque yet, exist and take drilling cuttings sewage pollution body of wall, floor and bore reaction torque accident such as hurt sb.'s feelings and happen occasionally because of the workman loses control of water, greatly restricted the performance of water brill function, construct in the household building especially, it is only little careful little to force water to bore the user, the little water yield in addition anhydrously creep into, work efficiency is low, bore tube life-span weak point, become together.The purpose of this utility model is to create a kind of light waterproof pilot for water drill, traditional hand-held water is bored by this waterproof pilot, solution seals the defeated sewage of collection, supporting water brill weight, anti-reaction torque, accurate several big tasks of pilot bore hole direction, the workman only bears switch water and bores and handle the task that step-by-step movement is sent the rig structure like a cork, reach stop to pollute, purpose that the tube life-span is bored in safety labor-saving and raising.In order to achieve the above object, the concrete solution of the utility model is that waterproof pilot for water drill collects the water delivery pedestal by sealing, guiding slide bar assembly, and step-by-step movement send rig structure and Fast Installation fixed mechanism four partly to form.Sealing collection water delivery pedestal is like flat flashboard, it in the middle of the following half sealing collection water delivery chamber by the diamond drill machine tube, for solving the very coarse metope of sealing, the oral area of collection water delivery chamber wall covering surface is established the dish-like sealing gasket that allows aximal deformation value, the oral area in collection front, water delivery chamber is adorned dish-shaped drip ring, it can be general with dish-shaped sealing gasket, for this pedestal is installed firm under the condition of only using a hammer riveting expanding tube screw (formal name used at school-follow closely C type), pedestal from collect the water delivery chamber extend upward one section like cucurbit the shape balancing segment, make expanding tube screw be in the middle part of collection water delivery pedestal.In order to adapt to the punch position different needs, allowing water be drilled in collection water delivery pedestal left and right sides face can install, collection both sides, the left and right sides, water delivery chamber is respectively established one group, the earhole of the dress guiding slide bar of every group of two vertical wall directions, if waterproof pilot is exclusively used in the accent installing hole that fans the air, earhole then can specificly will be installed make with base plane 5 degree top rakes are arranged, just making between water auger spindle line after the assembling and body of wall to have 5 degree top rakes, directly satisfy air-conditioning needs are installed.The guiding slide bar is fixed with card key and jackscrew, and the other end of slide bar is established slide bar depth of parallelism retainer.Two of suits are installed the travelling carriage that water bores on the slide bar.Suit one cover step-by-step movement is sent the rig structure on the slide bar between two travelling carriages, and it is containing the band handle ring of insisting and extend the operation rocking bar of encircling second guiding slide bar again, be fixed in band on two travelling carriages and dial the connection bridge plate of Chinese toon, insist and encircle front and back return spring and action bars etc. and form by being enclosed within insist ring, one of a band handle on the slide bar.The handle bearing pin and the wing plate hinge mounted of operating the rocking bar head of insisting and encircling.Two of rocking bars of operation all establish the action bars jack in case arbitrarily up or the below insert action bars and add force feed and bore.Laterally have the above-below direction chute that Chinese toon inserts into the inner of dialling on the gusset in operation rocking bar stage casing for band slide block on the connection bridge plate, when inserting in the one end jack with action bars, must make the band handle ring of insisting produce moment on the plane so earlier along the push-and-pull forward or backward of guiding slide bar, because of making the ring of insisting, actual gap blocks slide bar after toppling over an angle, owing to take into account the gap factor, insist the ring real work thickness only be it overlap the slide bar diameter 1/5th to 1/4th between, and handle effective force arm lengths is between 24 times of annular distance diameter are to three times, the frictional force of collar extension biting point will be insisted on slide bar greater than the axial thrust load that forces the ring of insisting to slide all the time reliably when satisfying these two conditional operations, the operation rocking bar is an axle with the handle upper pin of insisting then, prize or prize backward group Chinese toon of also power transmission band slide block on travelling carriage connection bridge plate forward, will drive on the travelling carriage water and bore and advance or retreat, realize adding force feed and bore or retreat and pulls out brill.Action bars is loosed one's grip, and the ring of then insisting is resetted by the front and back return spring between two parties.Again operation, the ring of insisting is then insisted in new position, so this operating system is step-type lever force-saving mechanism, and is very convenient.And when needing hand push water to be drilled in free slippage on the slide bar, the ring of insisting is not because of there being in-plane moment, and it can hair fastener.And then can be quickly installed to the station and unloading fast of waiting to hole in order to solve this waterproof pilot, and designed a cover Fast Installation fixed mechanism especially, summarize the mechanism of say so a kind of ratchet and clamp nut combination.Specifically have the ratchet case and unidirectional ratchet is housed and compositions such as the main body core retainer plate of coarse pitch clamp nut, core retainer plate buffering stage clip, core retainer plate card key, card key cover by a hammer riveting expanding tube screw (running stores, construction finish abandons in body of wall), a band ratchet screw rod, rear portion.This mechanism is attached to the middle part of sealing collection water delivery pedestal, in the installing hole in collection top, water delivery chamber.It is in place substantially fast that this mechanism utilizes ratchet to realize, flattens sealing gasket and adorn admittedly with tight several the finishing down of the clamp nut of coarse pitch.Otherwise the solid nut of degree of tightness is 90 ° of rotating band ratchet screw rods again, take off instrument fast and make ratchet be in screw rod light face.

The utility model is beated for solving the initial normal brill tube that occurs of eye of making of water brill, be difficult for making the difficult point of eye especially at ceramic tile face, out-of-flatness face, the utility model is at sealing collection water delivery pedestal, with collection water delivery chamber is on the chamber wall of the garden heart, entad arrange that being provided with four adjustable brill tubes sets upright push rod, it can effectively overcome water bores and initially to make the brill tube that eye can take place and beats, can be exactly at smooth, rugged ceramic tile, even on the half skirting of wall, also can get shaped bright and clean starter hole.

Below in conjunction with embodiment shown in the drawings the utility model is described in further detail.

Fig. 1 is the overall schematic that the supporting water of waterproof pilot for water drill bores, and this figure also is a Figure of abstract.

Fig. 2 is that the step-by-step movement of waterproof pilot for water drill is sent rig structure structural representation.

Fig. 3 is the element of work figure that step-by-step movement send the band handle of rig structure to insist ring.

Fig. 4 is the Fast Installation fixed mechanism structural representation of waterproof pilot for water drill.

Fig. 5 is that the guiding slide bar is contained in the schematic diagram in the collection water delivery pedestal earhole.

Sequence number (1) is the collection water delivery pedestal of waterproof pilot for water drill as shown in Figure 1, sequence number (2) is the guiding slide bar assembly that mounting support water bores, sequence number (3) is that step-by-step movement is sent the rig structure, sequence number (4) is the Fast Installation fixed mechanism that is attached on the collection water delivery pedestal, (5) signal water bores, (6) signal diamond drill machine tube, (7) the collection water delivery chamber of signal pedestal, (8) the dish-shaped sealing gasket that seals between signal and wall, (9) be shown in 4 adjustable tubes that bore that the water cavity wall entad arranges and set upright push rod (it can be the brass screws of outwards twisting from collection water delivery cavity wall), (10) be the water cavity outer wall upwardly extending one section like cucurbit the shape balancing segment, (11) be the sewage outlet pipe of taking drilling cuttings, (12) be the earhole of one group two dress guiding slide bars, (13) be the slide bar depth of parallelism retainer that the slide bar other end is established, (14) be that the back travelling carriage that water bores is installed, the screw (17) that the hollow set screw of spinning is arranged in the middle of it, (18) be hollow set screw, (19) be eccentric adjusting sleeve, (20) be fixed screw, (15) be that the front slide frame that water bores is installed, (21) be that water bores the fixed screw that a no regulatory function on the front slide frame is installed, (22) be that step-by-step movement is sent the band handle of the rig structure ring of insisting, (23) be the operation rocking bar, (24) be that going up on the operation rocking bar operated bar jack, (25) be the following operation bar jack of operation rocking bar, (26) be action bars, (27) be to be fixed in two connection bridge plates on the travelling carriage, (28) be the preceding reseting pressuring spring of ring of insisting, (29) be the back return spring of insisting and encircling, (30) be that water creeps into water pipe, (31) be the stopping screw of fixed guide slide bar, (54) be the hammer riveting expanding tube screw that the construction part body of wall is gone in riveting in advance, (61) signal body of wall, the porthole that (62) signal is got.

Can find out promptly that from Fig. 1 it has more intactly explained the example general picture of utilizing the utility model waterproof pilot for water drill body of wall punching.Treat a hammer of construction part riveting riveting expanding tube screw (54) at body of wall earlier, then the unidirectional ratchet screw rod of a part band (41) in the Fast Installation fixed mechanism is screwed on the hammer riveting expand tube (54), when boring together with supporting good water, this waterproof pilot is picked up, band ratchet screw rod (41) is on the wall penetrated from Fast Installation fixed mechanism main body core retainer plate (A) mouth that is attached on the waterproof pedestal (1), along whole facility are pressed to metope, ratchet can be bitten ratchet in the optimum position, and to reach this waterproof pilot in place substantially, and then twist several following forward by the coarse pitch clamp nut of core retainer plate root, promptly flatten the dish-shaped sealing gasket between this waterproof pilot and the body of wall, the sealing of borehole circumference and fixing is fast treated in realization, the band drilling cuttings sewage that returns out outside boring tube during boring is all collected through sewage outlet pipe (11) water conservancy diversion by collection water delivery cover pedestal (1), finishes the anti-pollution body of wall of borehole engineering, the task on ground.Because there is certain thickness in collection water delivery chamber, oral area has drip ring (8 ') (referring to Fig. 3) to stop to fly low-priced water, stick in the sewage that bores on the tube and go out boring along with distance is extended, the rule that outer water dumping is successively decreased rapidly, the water that bores on the tube can be dried before going out to collect the water delivery chamber, though therefore the sewage that flows out in the construction is more, also can collect smoothly.Can see whole relation of the present utility model clearly from Fig. 1, it is to be installed in (15) with two the former handle Chinese toon heads in its side that the water that double dot dash line is represented bores (5), (14) on two travelling carriages, can slide by the omnidistance front and back of two parallel slide bars (16), supporting water bores weight and anti-reaction torque, installation screw (21) on the front slide frame (15) is not adjust function, can be considered a pin joint, a big screw (17) is then arranged on the travelling carriage (14), and it matches with hollow set screw (18), its variation of stretching out the travelling carriage height rises adjusts the depth of parallelism that water bores horizontal direction and leading truck, and the eccentric adjusting sleeve (19) that is contained in the cored screw rises on the adjusting water brill vertical plane and the depth of parallelism of leading truck.The water of push-pull belt brill tin (6) bores the qualified back of the big stroke slip inspection depth of parallelism and uses screw (20) that the water brill is locked, and then will bore tube and set upright a bar (9) and be transferred to and bore between tube behind 0. 3 to 0. 7 millimeters in the gap with lock nut (58) locking, this moment ceramic tile etc. too smoothly or too the initial pore-creating of out-of-flatness metope also become very easy.See also among Fig. 1 that on the guiding slide bar between the front and back travelling carriage (15) (14) suit a cover step-by-step movement and send rig structure (3), it is inserted by action bars (26) and operates in (24) or (25) jack, and auger spindle is to repeating push-and-pull and loosing one's grip and realize that promptly the laborsaving lever of step-by-step movement send brill or pulls out brill downstream.When operating, do not influence water and bore the free slippage on the guiding slide bar of the dependence front and back big distance of travelling carriage without action bars.

Sequence number (33) is the hole, the garden that greatly enhances on operation rocking bar (23) top as shown in Figure 2, (34) be the little Chang Yuan hole of bottom, (35) are for the elongated slot of dialling the Chinese toon activity, and (36) are to dial Chinese toon, (37) be to be enclosed within the slide block of dialling on the Chinese toon, it is the direction of motion of axle with bearing pin (32) that curved arrow represents to operate rocking bar.

Send the rig structure three-dimensional view from Fig. 2 step-by-step movement, clearly expressed its structural relation, the ring (22) of insisting of band handle is inclusive between the hole, the garden that greatly enhances (33) and the two blocks of wing plates (57) on it of operation rocking bar upward opening, its handle is hingedly mounted on the head wing plate (57) of operation rocking bar (23) by bearing pin (32), two parallel guiding slide bars (16) laterally have group Chinese toon chute (35) that extends up and down from operating passing two big or small Chang Yuan holes (33) (34) up and down of rocking bar (23) on the middle Plate with web (39).For the hole, the garden that greatly enhances (33) of opening and extend the stable of wing plate (57), on operate the side that bar jack (24) is located at two wing plates, and operation bar jack (25) is located at as scheming the downward extending part in little Chang Yuan hole (34) down.Also can see among Fig. 2 from the outside fit be fixed to before and after the middle part of connection bridge plate (27) of travelling carriage back be provided with one and dial Chinese toon (36) perpendicular to the connection bridge plate, it stretches into group Chinese toon chute (35) on the operation rocking bar, for resistance and the wearing and tearing of reducing friction, dial on the Chinese toon (36) and also overlap a slide block (37).Install for ease of the connection bridge plate, its installing hole (38) is the Chang Yuan hole.

As shown in Figure 3, (a) be the handle stress point of insisting, (q) and (c) be that the band handle ring of insisting is toppled over two biting points after the angle, (L) be the insist effective force arm lengths of ring (22) of band handle, (e) be the real work thickness of insisting and encircling, (β) angle is the work inclination angle of insisting and encircling and lead the gap generation between slide bar because of the band handle, the functional reliability of ring of insisting as can be seen is subjected to the influence of lot of essential factors, after determined to insist circulation layer spare actual (real) thickness and handle length, insist and encircle the variation that the fit-up gap directly has influence on work inclination angle (β), the inclination angle increases the condition of insisting and then degenerates, Fig. 3 shows that the frictional force of requirement (q) point and (c) generation is all the time greater than operation axial force (p), just must satisfy (β) angle and must be this to fastness from the locking angle, experimental results show that limit the band handle insist ring operation thickness (e) by the loop bar footpath 1/5th to 1/4th between, the effective force arm lengths (L) of handle of insisting is two conditions between 24 times to three times of annular distance diameter, just can satisfy step-by-step movement and send the pressure needs of insisting of rig structure, the excessive and guiding slide bar that bites of the pressure that is unlikely to again to insist.

Sequence number (40) is the main body core retainer plate as shown in Figure 4, (41) be band ratchet screw rod, (42) be ratchet, (43) be pawl axis, (44) be clamp nut, (45) be hair fastener shape ratchet spring, (46) be main body core retainer plate buffering stage clip, (47) be core retainer plate card key, (48) are card key covers, and (49) are the external screw threads that links to each other with hammer riveting expand tube on the band ratchet screw rod, (50) be the thin neck of on band ratchet screw rod, establishing of elasticity, (51) be unidirectional ratchet, (52) are the flat sides who establishes for ease of twisting band ratchet screw rod, the uncovered ratchet case of (53) expression main body core retainer plate head; (54) the disposable hammer riveting expanding tube screw of expression, (55) expression collection water delivery accent portion adorns the bead of dish-shaped sealing gasket, and (56) are illustrated in the sealing convex line of further enhanced leaktightness effect on the dish-shaped sealing gasket, and (58) are to bore the slim lock nut that tube is set upright push rod.Be to be exclusively used in air-conditioning installation punching to be the ad hoc top rake of guiding slide bar (θ), this top rake is 5 degree in accordance with regulations, and this top rake can not established according to the purposes of facility yet.

Can know the detailed structure of finding out Fast Installation fixed mechanism (4) from Fig. 4, there is the outside uncovered ratchet install bin (53) of a major part at main body core retainer plate (40) rear portion as shown in the figure, unidirectional ratchet (42) is housed in it, explain with bearing pin (43) and tank wall, go into the spring (45) of a hair fastener shape from ratchet case tip cutting and give ratchet with elastic force.The main body core retainer plate is provided with one section coarse thread by the root of ratchet case and joins clamp nut (44), the main body core retainer plate that ratchet and clamp nut are housed is passed the pilot hole of the top, collection water delivery chamber (7) of pedestal (1), but core retainer plate does not protrude the plane of pedestal (1), overlap buffer spring (46) and card key cover (48) again from the pedestal back side toward core retainer plate, compress buffer spring (46) this moment, make the circlip groove of core retainer plate head expose card key cover, block the card key of splitting (47), unclamp pressure buffer spring is upheld, card key cover then covers card key (47) and promptly installs.Standard component hammer riveting expanding tube screw (54) construction is once used one among the figure, and construction is complete abandons in body of wall.Another main points of the present utility model are, band ratchet screw rod (41) is at external screw thread (49) and establish between the body of rod of unidirectional ratchet and establish one section thin neck of the elasticity less than the Bottom of Thread diameter (50).Can imagine, be screwed in the unidirectional ratchet screw rod on the hammer riveting expand tube (54) earlier, as long as ratchet is in same orientation on ratchet and the main body core retainer plate, the A muzzle of core retainer plate is to band ratchet screw rod, press to body of wall, certainly will push away smoothly and start ratchet, insist to basic on-station position, twist several clamp nuts (44) down more forward until ratchet, compressed buffer spring when tightening simultaneously, make collection water delivery pedestal overlay wall, disc sealing ring (8) is deformed into the double dot dash line shape, finishes boring sealing on every side.Elder generation's rollback is unscrewed clamp nut (44) during dismounting, lives these facility weight with hand rest, blocks more than flat side (52) rotating band ratchet screw rod 90 degree with spanner again, makes ratchet break away from ratchet (42), and can outwards slide and take off these facility this moment along screw axial.Find out also that from Fig. 4 drip ring (8 ') is the part that can substitute mutually with dish-shaped sealing gasket (8).Dish-shaped as can be seen its outer rim of sealing gasket of Fig. 4 is provided with the ring-shaped groove of being convenient to clamp, utilize it to be installed on the flange (55) of collection water delivery accent portion, though its dish-shaped sealing lip limit amount of bloating of heaving is bigger, can push to bend in the collection water delivery chamber and go, seal body of wall by elasticity.Establish convex line (56) for further improving sealing above the lip limit of dish sealing gasket, it is more reliable to make it seal uneven metope.

Sequence number (59) is two groups every group each two card key chamber that guiding slide bar mounting ear orifice part all has on the collection water delivery pedestal (1) as shown in Figure 5, the effect of its card lifting key cover, (60) be guiding slide bar card key, hexagonal jackscrew (31) in adding makes the pulling force when bearing boring reliably after the guiding slide bar assembling.

Complete expression from Fig. 1 to Fig. 5, it is that the utility model waterproof pilot for water drill and water bore matching used most preferred embodiment, water bores and mixes after the utility model waterproof pilot for water drill, can realize ideally during construction that anti-pollution, supporting water bores weight, anti-reaction torque, send the brill safety labor-saving, can Fast Installation dismantle again, improve punching speed greatly and prolong and bore a service life, can reduce construction cost significantly, this will make numerous air-conditioning installation enterprises and workman be benefited from popularization of the present utility model.

Claims (7)

1. waterproof pilot for water drill, it is characterized in that this waterproof pilot is by sealing collection water delivery pedestal (1), water bores guiding slide bar assembly (2), step-by-step movement send rig structure (3) and Fast Installation fixed mechanism (4) four partly to form, sealing collection water delivery pedestal is like flat flashboard, it in the middle of the following half sealing collection water delivery chamber (7) by the diamond drill machine tube, the oral area of collection water delivery chamber wall covering surface is equipped with dish-shaped sealing gasket (8), collection front, water delivery chamber oral area dress drip ring (8 '), dress Fast Installation fixed mechanism (4) in the installing hole of collection upper edge, water delivery chamber, pedestal from collect water delivery chamber (7) extend upward one section latent solid like the stable section (10) of cucurbit handle to guarantee to install, entad arrange that on the wall of collection water delivery chamber being provided with four adjustable brill tubes sets upright push rod (9), two sides are respectively established one group every group two the guiding slide bars that are parallel to collection water delivery chamber center line earholes (12) are installed about collection water delivery chamber, the guiding slide bar of packing into is fixing with card key (60) and jackscrew (31), the other end of two guiding slide bars (16) that extend in parallel is a slide bar depth of parallelism retainer (13), suit water bores travelling carriage (14) is installed on the slide bar, (15), suit one cover step-by-step movement is sent rig structure (3) on the slide bar between travelling carriage (14) and (15).

2. according to the described waterproof pilot for water drill of claim 1, it is characterized in that installing travelling carriage (14) that water bores has the screw (17) of the hollow set screw of spinning in the middle of it and adjusts water brill center line for the depth of parallelism between the slide bar (16) of leading by equipped hollow set screw (18) and eccentric bushing (19).

3. according to the described waterproof pilot for water drill of claim 1, it is characterized in that step-by-step movement send rig structure (3) by being enclosed within the band handle of guiding on the slide bar ring (22) of insisting, be fixed on the connection bridge plate (27) of dialling Chinese toon (36) that has on two travelling carriages (14) (15), operation rocking bar (23), the band handle is insisted and is encircled preceding return spring (28), back return spring (29), dial Chinese toon slide block (37), action bars (26), with the ring assembling bearing pin compositions such as (32) of insisting, big or small slotted hole (33) (34) in operation rocking bar (23) is encircled band handle insist ring and another root guiding slide bar (16) respectively, be provided with on the gusset (39) between big or small slotted hole (33) and (34) for dialling the microscler chute (35) that Chinese toon (36) inserts, operation rocking bar two up and down all is provided with the jack (24) (25) that inserts for action bars (26).

4. according to the described waterproof pilot for water drill of claim 1, it is characterized in that step-by-step movement send the best effectively operation thickness (e) of the ring of insisting of rig structure be its slide bar diameter of entangling 1/5th to 1/4th between.

5. according to the described waterproof pilot for water drill of claim 1, it is characterized in that the best effective force arm lengths (L) that step-by-step movement send the band handle of rig structure to insist its handle of ring is to insist between 24 times to three times that encircle internal diameter.

6. according to the described waterproof pilot for water drill of claim 1, it is characterized in that collecting a cover Fast Installation fixed mechanism (4) of setting up on the water delivery pedestal, it is the main body core retainer plate (40) of uncovered ratchet case (53) by the termination is arranged, band ratchet screw rod (41), ratchet (42), ratchet bearing pin (43), core retainer plate buffer spring (46), clamp nut (44), ratchet spring (45), core retainer plate card key (47) and card key cover compositions such as (48), the main body core retainer plate is provided with one section coarse thread and is equipped with clamp nut (44) mutually by the root of ratchet case, unidirectional ratchet (42) is explained with bearing pin (43) and tank wall in uncovered ratchet case, go into the spring (45) of a hair fastener shape from ratchet case tip cutting and give ratchet, the main body core retainer plate that has installed ratchet and clamp nut is passed the pilot hole on the collection water delivery chamber (7) of pedestal (1), but core retainer plate does not protrude the plane of pedestal (1) with elastic force, overlap buffer spring (46) again from the pedestal back side toward core retainer plate, card key cover (48) and the key that is installed (47).

7. according to the described waterproof pilot for water drill of claim 1, it is characterized in that its Fast Installation fixed mechanism (4), its band ratchet screw rod (41) is provided with one section stretch section less than the core diameter of thread (50) between the thread segment (49) that itself and hammer riveting expand tube (54) are twisted mutually and the thick body of rod that is processed with ratchet (51).

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