CN209083219U - The combined type of raise boring machine opens and closes steady bar board plug structure - Google Patents

Abstract

The combined type that the utility model discloses a kind of raise boring machine opens and closes steady bar board plug structure, including slide plate pedestal, front slide, tail skid and plate, slide plate pedestal is equipped with central opening, and the slide plate pedestal is equipped with a pair of slide sliding slot, and the central opening is between the two slide plate sliding slots；Front slide and tail skid, along being mutually slidably set on the slide plate sliding slot to the direction that the center of the central opening is close or is located remotely from each other, opposite side is equipped with steady bar watt on the front slide and tail skid, and the front slide is equipped with a pair of of plate sliding slot；Plate is slidingly disposed on the plate sliding slot, and the side of the plate is provided with the U type slot towards the central opening.The utility model provides a kind of novel steady bar board plug structure for cutting groove raise boring machine, can solve in attaching drilling rod and stable disk handoff procedure, due to the larger brought structure problem of the two size difference, and can complete plate movement simultaneously.

Description

The combined type of raise boring machine opens and closes steady bar board plug structure

Technical field

The utility model belongs to mining machinery technical field, and in particular to a kind of steady bar of combined type folding of raise boring machine is slotting Hardened structure.

Background technique

Cutting groove raise boring machine is as the efficient construction equipment of one of mine cutting groove day well construction, in guide hole and expansion During hole, to guarantee hole precision, need drilling rod and stable disk according to certain aligned transfer, for example, as shown in Figure 1, knife The diameter of disk is 670mm, and the diameter of drilling rod is 190mm, and the stability of drilling rod is kept after the completion of reaming, is needed every certain Distance at one diameter of installation be 670mm stable disk, to keep the stability of drilling rod.

The steady rod structure and board plug structure of existing raise boring machine have the following deficiencies:

One, when drilling rod is in steady rod structure, at steady rod structure and closed state, when needing through stable disk When, steady rod structure is at open, and facilitate stable disk to pass through, and drilling rod and the diameter dimension of stable disk difference are larger, The steady rod structure of traditional raise boring machine, can not major diameter dimension in this way stable disk；

Two, it during connecting and disconnecting drill rod, needs to be inserted into drilling rod card side with plate, to complete to unload bar and it is overcome to make in gravity Tenesmus campaign under, and the design in the prior art not combining steady rod structure and board plug structure, it usually needs point It is not arranged, causes to take up space big；

Three, in drilling process, the steady bar watt in steady rod structure is the important feature of drilling rod centering, while being also a kind of easy Component is damaged, steady bar watt can be in close contact with drilling rod generate abrasion at work, and when abrasion needs replacing, and existing steady rod structure In steady bar watt replacement it is inconvenient.

Therefore it develops and a kind of be suitable for through large scale stable disk, plate can be completed during unloading bar act and more The convenient steady bar board plug structure of combined type of steady bar watt is changed to be of great significance.

Application No. is 201610479360.3 patent documents to disclose a kind of novel cutting groove courtyard construction drill, thereon Plate assembly is installed in base assembly, lower plugboard assembly is installed on seat assembly of going to the bottom, lower plugboard assembly includes lower rear sliding Plate, lower front slide, lower front card oil cylinder and lower back card/back board oil cylinder, the lower tail skid and lower front slide are mounted on the bottom In the slot of seat assembly, the lower tail skid is provided with lower plugboard block, is provided with U-shaped slide plate on lower front slide, it is described it is lower before Slide plate is connected by the lower front card oil cylinder with the bottom seat assembly, and lower tail skid passes through lower back card/back board and the bottom Seat assembly is connected.The drilling machine is alternately provided with only board plug structure, and drilling rod, which will be stuck, after front and back slide plate closure is not able to rotate, and does not have Steady bar function.

Summary of the invention

The combined type that the main purpose of the utility model is to provide a kind of raise boring machine opens and closes steady bar board plug structure, it is intended to solve The certainly existing steady rod structure of drilling machine is not suitable for large scale stable disk and passes through and do not have the problem of plate function.

To achieve the above object, the utility model proposes a kind of combined types of raise boring machine to open and close steady bar board plug structure, packet It includes:

Slide plate pedestal is equipped with central opening, and the slide plate pedestal is equipped with a pair of slide sliding slot, and the central opening is located at Between the two slide plate sliding slots；

Front slide and tail skid, along mutually slidably being set to the direction that the center of the central opening is close or is located remotely from each other In on the slide plate sliding slot, opposite side is equipped with steady bar watt on the front slide and tail skid, and the front slide is equipped with A pair of of plate sliding slot；

Plate is slidingly disposed on the plate sliding slot, and the side of the plate is provided with the U towards the central opening Type groove mouth.

It preferably, further include preceding steady rod oil cylinder and rear steady rod oil cylinder, one end connection of steady rod oil cylinder is described advancing slip before described Plate, the other end connect the slide plate pedestal, and one end of steady rod oil cylinder connects the tail skid after described, the other end connects the cunning Board bottom seat.

Preferably, the first rolling bearing units are equipped at the top of the front slide, the tailpiece of the piston rod of steady rod oil cylinder is equipped with the before described One oscillating bearing, and be installed on first rolling bearing units by the first pin shaft, the slide plate base top is equipped with first Seat, the cylinder barrel end of steady rod oil cylinder is equipped with second joint bearing before described, and is installed on first support by the second pin shaft； The tail skid bottom is equipped with the second rolling bearing units, and the tailpiece of the piston rod of steady rod oil cylinder is equipped with third oscillating bearing after described, and leads to It crosses third pin shaft to be installed on second rolling bearing units, the slide plate base bottom is equipped with the second support, steady bar oil after described The cylinder barrel end of cylinder is equipped with the 4th oscillating bearing, and is installed on second support by the 4th pin shaft.

It preferably, further include plate cylinder installation seat and plate oil cylinder, the plate cylinder installation seat is set to described advancing slip The front end of plate, plate oil cylinder one end connects the plate cylinder installation seat, the other end connects the plate.

Preferably, the plate is equipped with the rod aperture for connecting the plate oil cylinder, sets at the rod aperture There is a copper sheathing, be equipped with the 5th pin shaft in the copper sheathing, the 5th pin shaft is equipped with and the oil nozzle that is connected in copper sheathing.

Preferably, the slide plate sliding slot includes the upper hopper chute and gliding groove arranged side by side for being located at upper and lower position, before described The left and right end face of slide plate is slideably flush-mounted in the upper hopper chute, and the left and right end face of the tail skid is slideably flush-mounted in institute It states in gliding groove.

Preferably, the bottom of the front slide, which is downwardly projected, is formed with front slide pedestal, the rear end of the front slide pedestal It is formed with the first arc convex for installing steady bar watt；The front end of the tail skid is formed with second for installing steady bar watt Arc convex, when the front slide and tail skid close to close up when, second arc convex and first arc convex are spelled Synthesis is round.

Preferably, the rear end of the front slide is equipped with front slide recess, projects upwards and is formed at the top of the tail skid Tail skid footstock, the front bulkhead of the tail skid footstock are docked with the front slide recess；After the front end of the tail skid is equipped with Slide plate recess, the tail skid recess are docked with the aft bulkhead of the front slide pedestal.

Preferably, the intermediate recess of the front slide is formed with plate accommodation groove, the two sides of the plate accommodation groove towards Sunken inside is formed with plate sliding slot；The steady bar watt is located at below the plate sliding slot.

Preferably, the rear end of the upper hopper chute is equipped with front slide limited block, and the front end of the gliding groove is limited equipped with tail skid Position block.

Compared with prior art, technical solutions of the utility model the utility model has the advantages that

The utility model provides a kind of novel steady bar board plug structure for cutting groove raise boring machine, can solve attaching brill In bar and stable disk handoff procedure, due to the larger brought structure problem of the two size difference, and plate can be completed simultaneously Movement.Firstly, enabling front slide and the opposite sliding of tail skid by the way that slide plate sliding slot is arranged on slide plate pedestal, working as front slide When close to each other with tail skid, drilling rod can be enclosed and be wrapped by two steady bars watt, be stablized to drilling rod, and then, this is practical new Plate sliding slot is arranged in type also in front slide, by the way that plate to be slidably mounted in plate sliding slot, so that having U type slot Plate can be to the central opening close to or far from can also realizing plate function.The utility model is by steady rod structure It can be integrated with board plug structure, save the space that total occupies, so that compact-sized；When needing to realize plate function When, first front slide and tail skid are closed up, drilling rod is consolidated, then controlled plate and block drilling rod, so that more convenient complete to insert Plate movement；Also, the steady rod structure of the utility model be by front slide and tail skid along slide plate sliding slot straight line it is opposite slide come Control opening and closing, can be such that the central opening fully opens, so that large-sized stable disk be made to pass through, solve Existing steady rod structure is not suitable for the problem of large scale stable disk passes through.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of the drilling rod and stable disk in the utility model background technique；

The combined type for the raise boring machine that Fig. 2 proposes for an embodiment of the present invention, which opens and closes steady bar board plug structure and is in, closes up Structure chart when state；

Fig. 3 is that the combined type for the raise boring machine that Fig. 2 is proposed opens and closes the structure chart of steady bar board plug structure in the open state；

Fig. 4 be the raise boring machine that Fig. 2 is proposed combined type open and close the stable disk of steady bar board plug structure by when structure chart；

Fig. 5 is that the combined type for the raise boring machine that Fig. 2 is proposed opens and closes structure chart when steady bar board plug structure opens a part；

Fig. 6 is that the combined type for the raise boring machine that Fig. 2 is proposed opens and closes knot when stablizing to drilling rod of steady bar board plug structure Composition；

Fig. 7 is another visual angle figure of Fig. 5；

Fig. 8 is that the combined type for the raise boring machine that Fig. 2 is proposed opens and closes the board plug structure of steady bar board plug structure to drilling rod card Tight structure chart；

Fig. 9 is enlarged drawing at the A of Fig. 8；

Figure 10 is the explosive view of Fig. 5；

Figure 11 is the bottom view of Fig. 5；

Figure 12 is the sectional structure chart of oil nozzle in Fig. 9.

The drawing reference numeral of the utility model illustrates:

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.

In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the One ", the feature of " second " can explicitly or implicitly include at least one of the features.It is " more in the description of the present invention, It is a " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, it can also To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with The concrete meaning of above-mentioned term in the present invention is understood as the case may be.

It in addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability Based on domain those of ordinary skill can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of this technical solution is not present, also not within the protection scope of the requires of the utility model.

The utility model proposes a kind of combined types of raise boring machine to open and close steady bar board plug structure.

Referring to figure 2. to Figure 12, the combined type of raise boring machine opens and closes steady bar board plug structure, comprising:

Slide plate pedestal 1 is equipped with central opening 11, and the slide plate pedestal is equipped with a pair of slide sliding slot 12, and the center is opened Mouth 11 is between the two slide plate sliding slots 12；

Front slide 2 and tail skid 3, along mutually to the direction sliding that the center of the central opening 11 is close or is located remotely from each other Ground is set on the slide plate sliding slot 12, and opposite side is equipped with steady bar watt 4 on the front slide 2 and tail skid 3, described advancing slip Plate is equipped with a pair of of plate sliding slot 21；

Plate 5 is slidingly disposed on the plate sliding slot 21, and the side of the plate 5, which is provided with towards the center, opens The U type slot 51 of mouth 11.

The utility model provides a kind of novel steady bar board plug structure for cutting groove raise boring machine, firstly, by Slide plate sliding slot 12 is set on slide plate pedestal 1, enables front slide 2 and the opposite sliding of tail skid 3, when front slide 2 and tail skid 3 When close to each other, drilling rod can be enclosed and be wrapped by two steady bars watt 4, be stablized to drilling rod, then, the utility model is also preceding Plate sliding slot 21 is set in slide plate 2, by the way that plate 5 is slidably mounted in plate sliding slot, so that with U type slot 51 Plate 5 can be to the central opening 11 close to or far from can also realizing plate function.The utility model is by steady rod structure It can be integrated with board plug structure, save the space that total occupies, so that compact-sized；When needing to realize inserted link function When, first front slide 2 and tail skid 3 are closed up, drilling rod is consolidated, then controlled plate 5 and block drilling rod, so that being more convenient It is acted at plate；Also, the steady rod structure of the utility model is the straight line phase by front slide 2 and tail skid 3 along slide plate sliding slot 12 Opening and closing are controlled sliding, the central opening 11 can be made to fully open, to keep large-sized stable disk smooth Pass through, solves the problems, such as that existing steady rod structure is not suitable for large scale stable disk and passes through.

Further, the combined type of the raise boring machine opens and closes steady bar board plug structure further include: preceding steady rod oil cylinder 6 and rear steady Rod oil cylinder 7, one end of steady rod oil cylinder 6 connects the front slide 2 before described, the other end connects the slide plate pedestal 1, steady after described One end of rod oil cylinder 7 connects the tail skid 3, the other end connects the slide plate pedestal 1.

Fig. 2, Fig. 3 and Fig. 8 are please referred to, specifically in the present embodiment, the slide plate pedestal 1 includes top plate 13 and bottom plate 14, top plate 13 is similar U-shaped with bottom plate 14, and opening is oppositely arranged, it is possible thereby to form circular central opening 11.It is described steady Rod oil cylinder 6 is connected between the top plate 13 and front slide 2, and when the preceding steady rod oil cylinder 6 elongation, the front slide 2 is forward It opens, when steady rod oil cylinder 7 extends after described, tail skid 3 is opened backward, and thus front slide 2 and tail skid 3 are located remotely from each other, will The central opening 11 fully opens, and guarantees that large-sized stable disk can pass through.When the preceding steady rod oil cylinder 6 retracts, institute It states front slide 2 to slide back to backward, when rear steady rod oil cylinder 7 retracts, tail skid 3 is slid back to forward, so that front slide 2 and tail skid 3 is close to each other, until being close to, two steady bars watt 4 are close together at this time, realizes the stabilization function to drilling rod.When stable disk of unloading When, the change of distance between front slide 2 and tail skid 3 in steady bar module section can be realized by the stroke of two oil cylinders of control, The diameter for increasing centre bore, facilitates stable disk to pass through.

Further, the first rolling bearing units 22 are equipped at the top of the front slide 2, the tailpiece of the piston rod of steady rod oil cylinder 6 before described It is installed on first rolling bearing units 22 equipped with the first oscillating bearing 61, and by the first pin shaft 62, the slide plate pedestal 1 Top is equipped with the first support 15, and the cylinder barrel end of steady rod oil cylinder 6 is equipped with second joint bearing 63 before described, and passes through the second pin shaft 64 It is installed on first support 15；3 bottom of tail skid is equipped with the second rolling bearing units 31, the work of steady rod oil cylinder 7 after described Stopper rod end is equipped with third oscillating bearing 71, and is installed on second rolling bearing units 31 by third pin shaft 72, the slide plate 1 bottom of pedestal is equipped with the second support 16, and the cylinder barrel end of steady rod oil cylinder 7 is equipped with the 4th oscillating bearing 73 after described, and passes through the 4th Pin shaft 74 is installed on second support 16.

Also referring to Fig. 5 and Figure 11, before described the both ends of steady rod oil cylinder 6 and rear steady rod oil cylinder 7 be all by pin shaft and Oscillating bearing connects installation, and oscillating bearing has certain activity point of view, can prevent installation error and part's machining errors, Lead to that cylinder piston rod is stuck and cannot flexibly stretch out retraction.Also, the utility model will be used to driving steady before front slide 2 Rod oil cylinder 6 is set on top plate 13, will be used to drive the rear steady rod oil cylinder 7 of tail skid 3 to be set to 14 bottom of bottom plate, two oil cylinders are mutually not Interference, design are reasonable.

Further, the combined type of the raise boring machine opens and closes steady bar board plug structure further include: 8 He of plate cylinder installation seat Plate oil cylinder 9, the plate cylinder installation seat 8 are set to the front end of the front slide 2, described in the connection of described 9 one end of plate oil cylinder Plate cylinder installation seat 8, the other end connect the plate 5.

The plate mounting base 8 is installed on the front slide 2 by bolt, plate oil cylinder 9 by the 5th pin shaft 91 with Plate 5 connects, for driving the relatively described front slide 2 of plate 5 to slide.When plate oil cylinder 9 stretches out, in conjunction with engine reduced power case Rotary motion, plate 5 slide backward, i.e., close to the drilling rod being located in the central opening 11, can smoothly be inserted into drilling rod card side, Bar operation is unloaded to realize.

Further, the plate 5 is equipped with the rod aperture for connecting the plate oil cylinder 9, the rod aperture Place is equipped with copper sheathing 93, be equipped with the 5th pin shaft 91 in the copper sheathing 93, and the 5th pin shaft 91 is equipped with and is connected in copper sheathing 93 Oil nozzle 92.

Butter is filled by oil nozzle 92, for realizing lubrication anti-attrition.

Further, the slide plate sliding slot 12 includes the upper hopper chute 121 and gliding groove arranged side by side for being located at upper and lower position 122, the left and right end face of the front slide 2 is slideably flush-mounted in the upper hopper chute 121, the left and right end face of the tail skid 3 Slideably in the gliding groove 122.

Further, described referring to Fig. 10, the bottom of the front slide 2, which is downwardly projected, is formed with front slide pedestal 23 The rear end of front slide pedestal 23 is formed with the first arc convex 24 for installing steady bar watt 4；The front end of the tail skid 3 is formed Have the second arc convex 32 for installing steady bar watt 4, when the front slide 2 and tail skid 3 close to close up when, second arc Shape protrusion 32 and first arc convex 24 piece together circle.

The steady bar watt 4 is fixed on first arc convex 24 and the second arc convex 32 by the 6th pin shaft 41, With the increase of guide hole operation time, different degrees of abrasion can occur for steady bar watt 4, when abrasion loss influences guide hole precision, tear open The 6th pin shaft for playing fixed function down, can be convenient replacement.

Further, the rear end of the front slide 2 is equipped with front slide recess 25, and the top of the tail skid 3 projects upwards It is formed with tail skid footstock 33, the front bulkhead of the tail skid footstock 33 is docked with the front slide recess 25；The tail skid 3 front end is equipped with tail skid recess 34, and the tail skid recess 34 is docked with the aft bulkhead of the front slide pedestal 23.

So that tail skid footstock 33 can be along sliding before and after the bottom surface of the top plate 13 when tail skid 3 slides Dynamic, when front slide 2 slides, front slide pedestal 23 can slide back and forth along the top surface of the bottom plate 14, also, when advancing slip When plate 2 and tail skid 3 are drawn close, when steady bar watt 4 is fitted in drilling rod periphery, the aft bulkhead and tail skid footstock 33 of front slide 2 can bases This fastening, the front bulkhead and front slide pedestal 23 of tail skid 3 can fasten substantially, so that this structure more consolidates firm, raising machine Tool intensity.

Further, the intermediate recess of the front slide 2 is formed with plate accommodation groove 26, and the two of the plate accommodation groove 26 Side, which is recessed inwardly, is formed with plate sliding slot 21；The steady bar watt 4 is located at 21 lower section of plate sliding slot.

When thereby ensuring that front slide 2 and tail skid 3 close up, the plate 5 and steady bar watt 4 are located at total Upper and lower position, it is non-interference, also, board plug structure is mounted in steady rod structure by the utility model, and total design is tight It gathers, reduces the space occupied.

Further, referring to Fig. 7, the rear end of the upper hopper chute 121 is equipped with front slide limited block 123；Referring to Fig. 8, The front end of the gliding groove 122 is equipped with tail skid limited block 124.

When currently steady rod oil cylinder 6 and rear steady 7 two cylinder piston rods of rod oil cylinder reach maximum position, two stable watts 4 It is the state opened, if piston rod bounces back, is in closed state, holds drilling rod tightly, in order to keep the pressure held tightly, piston rod Stroke has a margin, and the front slide limited block 123 can limit the position of front slide 2, and tail skid limited block 124 can be with The position for limiting tail skid 3, is just the aperture of 190mm after closing up two steady bars watt 4, i.e., just embraces drilling rod；And if There is no slide plate limited block, that front and back slide plate can make steady bar watt excessively hold drilling rod tightly under the action of oil cylinder.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (10)

1. a kind of combined type of raise boring machine opens and closes steady bar board plug structure characterized by comprising

Slide plate pedestal is equipped with central opening, and the slide plate pedestal is equipped with a pair of slide sliding slot, and the central opening is located at two institutes It states between slide plate sliding slot；

Front slide and tail skid, along being mutually slidably set to institute to the direction that the center of the central opening is close or is located remotely from each other It states on slide plate sliding slot, opposite side is equipped with steady bar watt on the front slide and tail skid, and the front slide is equipped with a pair Plate sliding slot；

Plate is slidingly disposed on the plate sliding slot, and the side of the plate is provided with the U-type groove towards the central opening Mouthful.

2. the combined type of raise boring machine as described in claim 1 opens and closes steady bar board plug structure, which is characterized in that steady before further including Rod oil cylinder and rear steady rod oil cylinder, one end of steady rod oil cylinder connects the front slide before described, the other end connects the slide plate pedestal, One end of steady rod oil cylinder connects the tail skid after described, the other end connects the slide plate pedestal.

3. the combined type of raise boring machine as claimed in claim 2 opens and closes steady bar board plug structure, which is characterized in that the front slide Top is equipped with the first rolling bearing units, and the tailpiece of the piston rod of steady rod oil cylinder is equipped with the first oscillating bearing before described, and passes through the first pin shaft It is installed on first rolling bearing units, the slide plate base top is equipped with the first support, the cylinder barrel end of steady rod oil cylinder before described It is installed on first support equipped with second joint bearing, and by the second pin shaft；The tail skid bottom is equipped with the second band Seat bearing, the tailpiece of the piston rod of steady rod oil cylinder is equipped with third oscillating bearing after described, and is installed on described second by third pin shaft On rolling bearing units, the slide plate base bottom is equipped with the second support, and the cylinder barrel end of steady rod oil cylinder is equipped with the 4th joint shaft after described It holds, and is installed on second support by the 4th pin shaft.

4. the combined type of raise boring machine as described in claim 1 opens and closes steady bar board plug structure, which is characterized in that further include plate Cylinder installation seat and plate oil cylinder, the plate cylinder installation seat are set to the front end of the front slide, plate oil cylinder one end Connect the plate cylinder installation seat, the other end connects the plate.

5. the combined type of raise boring machine as claimed in claim 4 opens and closes steady bar board plug structure, which is characterized in that on the plate Equipped with the rod aperture for connecting the plate oil cylinder, it is equipped with copper sheathing at the rod aperture, the is equipped in the copper sheathing Five pin shafts, the 5th pin shaft are equipped with and the oil nozzle that is connected in copper sheathing.

6. the combined type of raise boring machine as described in claim 1 opens and closes steady bar board plug structure, which is characterized in that the slide plate is sliding Slot includes the upper hopper chute and gliding groove arranged side by side for being located at upper and lower position, and the left and right end face of the front slide is slideably embedding Loaded in the upper hopper chute, the left and right end face of the tail skid is slideably flush-mounted in the gliding groove.

7. the combined type of raise boring machine as claimed in claim 6 opens and closes steady bar board plug structure, which is characterized in that the front slide Bottom be downwardly projected and be formed with front slide pedestal, the rear end of the front slide pedestal is formed with first for installing steady bar watt Arc convex；The front end of the tail skid is formed with the second arc convex for installing steady bar watt, when the front slide and after For slide plate close to when closing up, second arc convex and first arc convex piece together circle.

8. the combined type of raise boring machine as claimed in claim 7 opens and closes steady bar board plug structure, which is characterized in that the front slide Rear end be equipped with front slide recess, project upwards at the top of the tail skid and be formed with tail skid footstock, the tail skid footstock Front bulkhead docked with the front slide recess；The front end of the tail skid be equipped with tail skid recess, the tail skid recess with The aft bulkhead of the front slide pedestal docks.

9. the combined type of raise boring machine as claimed in any one of claims 1 to 8 opens and closes steady bar board plug structure, which is characterized in that The intermediate recess of the front slide is formed with plate accommodation groove, and the two sides of the plate accommodation groove, which are recessed inwardly, is formed with plate Sliding slot；The steady bar watt is located at below the plate sliding slot.

10. the combined type of raise boring machine as claimed in claim 6 opens and closes steady bar board plug structure, which is characterized in that the upper cunning The rear end of slot is equipped with front slide limited block, and the front end of the gliding groove is equipped with tail skid limited block.