CN218030193U - Hob assembly - Google Patents

Abstract

The utility model provides a hob assembly, which comprises a hob seat, a hob and a locking assembly, wherein the hob seat comprises two same hob seat plates, the hob seat plates are mutually connected, the hob seat plates are provided with grooves for accommodating the locking assembly, the two locking assemblies are respectively and correspondingly arranged in the grooves of the two hob seat plates, and the hob is arranged on the locking assembly through the hob shaft; locking subassembly includes dog, briquetting, connecting rod, voussoir, retaining member, apron and trapezoidal slip table, and dog, briquetting, connecting rod, retaining member, trapezoidal slip table and voussoir combination realize locking or loosening to the arbor. Through using the utility model provides a hobbing cutter subassembly can realize quick tool changing and can prevent that the hobbing cutter is not hard up.

Description

Hob assembly

Technical Field

The utility model relates to a tunnel construction technical field, concretely relates to hobbing cutter subassembly.

Background

In the long-distance tunneling process of a shield tunneling machine in a complex stratum, the cutter is seriously abraded, and the cutter needs to be frequently changed in order to ensure the tunneling efficiency of the cutter head. The tool changing of the existing shield machine mainly depends on manual work, the risk of manual tool changing is high, the efficiency is low, the cost is high, and the construction efficiency of the shield machine is influenced. The robot is adopted to carry out tool changing operation, so that the tool changing risk can be reduced, and the construction efficiency of the shield machine is improved. The traditional shield machine cutter locking device has the defects of more and scattered parts, complex dismounting process and unsuitability for automatic cutter changing of a robot, and a new hob locking cutter holder structure needs to be designed for realizing automatic cutter changing operation of the robot. In current automatic blade holder structure, the hobbing cutter dismouting process has been simplified to the scheme a bit, can tentatively realize the automatic tool changing operation of robot, but present automatic blade holder exists that blade holder bulk strength is not enough, the locking force is not enough and limitations such as locking function lack. The cutter bears larger impact load in the tunneling process, the vibration is strong, if the locking force of the cutter is insufficient and the locking function is lacked, the hob is easy to loosen and fall off in the tunneling process, the construction efficiency is influenced, and the structural safety of the cutterhead and the screw machine is threatened.

In summary, in order to solve the problems of quick assembly and disassembly of the hob and the hob holder of the shield machine and locking of the hob, a hob assembly which can be quickly disassembled and has a locking function is urgently needed to solve the problems existing in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can dismantle fast and possess locking function's hobbing cutter subassembly, concrete technical scheme as follows:

a hob assembly comprises a hob seat, a hob and a locking assembly, wherein the hob seat comprises two identical hob seat plates which are mutually connected, a groove for accommodating the locking assembly is formed in each hob seat plate, the two locking assemblies are respectively and correspondingly arranged in the grooves of the two hob seat plates, and the hob is arranged on the locking assembly through a hob shaft of the hob;

the locking assembly comprises a check block, a pressing block, a connecting rod, a wedge block, a locking piece, a cover plate and a trapezoidal sliding table, the wedge block and the pressing block are arranged in the groove in a sliding mode, the check block is arranged on the inner wall of the groove in a sliding mode along the depth direction of the groove, the trapezoidal sliding table is fixedly arranged in the groove and located between the wedge block and the pressing block, and a cavity for containing a cutter shaft is formed among the pressing block, the wedge block, the trapezoidal sliding table and the check block; the locking piece penetrates through the pressing block and the trapezoidal sliding table in sequence and is in threaded connection with the wedge block, a boss structure is arranged on a rod body of the locking piece, and the cover plate is arranged on the pressing block and is matched with the pressing block to lock the boss structure; two ends of the connecting rod are respectively connected with the pressing block and the stop block pin shaft; thereby the retaining member pulls the connecting rod through driving the briquetting motion and drives the dog motion, and dog, briquetting, connecting rod, retaining member, trapezoidal slip table and voussoir combination realize locking or loosening the arbor.

Preferably, the convex structure includes gomphosis subassembly one and with gomphosis subassembly one matched with gomphosis subassembly two, gomphosis subassembly one sets up on the body of rod of retaining member, rotatable setting between gomphosis subassembly one and the gomphosis subassembly two, circumference is provided with annular internal tooth on briquetting and convex structure's the contact surface, gomphosis subassembly one, gomphosis subassembly two and the combination of annular internal tooth three are used for preventing that the retaining member is not hard up.

Preferably, the first embedding component comprises a boss mounting seat, a boss and sliding pieces, the boss is arranged on the boss mounting seat, the boss mounting seat is arranged on the rod body of the locking part, and the two sliding pieces are rotatably arranged on the boss mounting seat and positioned on two sides of the boss;

the second embedded component comprises a bolt head, a first embedded groove and second embedded grooves, the first embedded groove and the two second embedded grooves are both arranged on the end face of one end of the bolt head, and the two second embedded grooves are divided into two sides positioned on the first embedded groove;

the first embedding groove and the boss and the second embedding groove and the sliding sheet are in clearance fit, and an elastic sheet is arranged between the second embedding groove and the sliding sheet and used for extending or retracting the sliding sheet from the second embedding groove;

the first embedding groove, the boss, the second embedding groove, the sliding sheet, the elastic sheet and the annular inner tooth combination are used for preventing the threaded rod from loosening.

Preferably, the stabilizer bar further comprises a stabilizer bar, the stabilizer bar penetrates through the pressing block and is embedded into the trapezoidal sliding table, and the stabilizer bar and the trapezoidal sliding table can slide relatively.

Preferably, the contact surface of arbor and voussoir, the contact surface of arbor and dog and the contact surface of arbor and trapezoidal slip table are provided with the chucking part on, the chucking part is used for the relatively fixed of arbor and voussoir, dog and trapezoidal slip table.

Preferably, an elastic pad is further arranged between the trapezoidal sliding table and the wedge block.

Preferably, the bolt head is a hexagonal head.

Preferably, the locking member is a locking lever.

Use the technical scheme of the utility model, following beneficial effect has:

(1) The utility model provides a hobbing cutter subassembly thereby pulls the connecting rod through the retaining member through driving the briquetting motion and drives the dog motion, when the dog is to the direction motion of keeping away from the hobbing cutter, when the dog by the briquetting, the voussoir, form the cavity that is used for holding the arbor between trapezoidal slip table and the dog and can appear the breach, the arbor of hobbing cutter gets into in the cavity via the breach, if the dog accomplishes under the effect of parts such as retaining member this moment and resets, then can realize the locking to the arbor, and threaded connection between retaining member and the voussoir, difficult emergence is not hard up, through using the utility model provides a hobbing cutter subassembly can realize quick tool changing and can prevent that the hobbing cutter from becoming flexible.

(2) The utility model provides a be provided with the chucking part on the contact surface of arbor and the contact surface of voussoir, arbor and dog and the contact surface of arbor and trapezoidal slip table of hobbing cutter subassembly in the hobbing cutter subassembly, through cooperateing with the blade holder, it is not hard up to place the hobbing cutter.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a schematic structural view of a hob assembly according to a preferred embodiment 1 of the present invention;

FIG. 2 isbase:Sub>A schematic sectional view taken along the plane A-A in FIG. 1 (the arbor locking state);

FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 2;

FIG. 4 is an enlarged schematic view of a portion of the structure of FIG. 2;

FIG. 5 isbase:Sub>A schematic sectional view taken along the plane A-A in FIG. 1 (with the arbor inbase:Sub>A relaxed state);

FIG. 6 is a schematic cross-sectional view taken along plane C-C of FIG. 5;

FIG. 7 is a schematic view of the clamping part of the hob shaft in FIG. 1;

fig. 8 is a schematic view of the tool holder of fig. 1 connected to a locking assembly (the tool shaft is locked, and a part of the tool holder plate is not shown);

fig. 9 is a schematic view of the connection between the tool apron and the anti-loosening assembly in fig. 1 (the tool shaft is in an anti-loosening state, and a part of the tool apron is not shown);

FIG. 10 is a schematic view of the lock of FIG. 2;

FIG. 11 is a schematic view of a portion of the retainer of FIG. 10;

FIG. 12 is a schematic view of a second engagement member of the boss arrangement of the locking member of FIG. 10;

FIG. 13 is a schematic structural view of the boss structure of FIG. 10 locked with the annular inner teeth of the pressure block;

FIG. 14 is a schematic structural view of the boss structure of FIG. 10 with the internal ring teeth of the pressure block in a relaxed state;

the automatic cutting machine comprises a cutter holder 1, a cutter seat plate 101, a stopper 102, a pressing block 103, an annular inner tooth 10301, a connecting rod 104, a pin shaft 105, a wedge 106, an elastic cushion 107, a locking member 108, a rod body of the locking member 10801, a boss 10802-structure, a 1080201-boss mounting seat, a 1080202-boss, a 1080203-sliding sheet, a 1080204-bolt head, a 1080205-first embedded groove, a 1080206-second embedded groove, a 1080207-elastic sheet, a cover plate 109, a stabilizer bar 110, a 111-bolt, a 112-trapezoidal sliding table, a 2-hob and a clamping part 201.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Example 1:

referring to fig. 1, a hob assembly comprises a hob holder 1, a hob 2 and a locking assembly, wherein the hob holder 1 comprises two identical hob holder plates 101, the hob holder plates 101 are connected with each other, a groove for accommodating the locking assembly is formed in each hob holder plate, the two locking assemblies are correspondingly arranged in the grooves of the two hob holder plates respectively, and the hob 2 is arranged on the locking assembly through a hob shaft thereof;

the anti-loosening assembly comprises a stop block 102, a pressing block 103, a connecting rod 104, a wedge block 106, a locking member 108, a cover plate 109 and a trapezoidal sliding table 112, referring to fig. 2, fig. 5, fig. 8 and fig. 9, wherein the wedge block 106 and the pressing block 103 are both arranged in a groove in a sliding manner, the stop block 102 is arranged on the inner wall of the groove in a sliding manner along the depth direction of the groove, the trapezoidal sliding table 112 is fixedly arranged in the groove and is positioned between the wedge block 106 and the pressing block 103, and a cavity for accommodating a cutter shaft is formed among the pressing block 103, the wedge block 106, the trapezoidal sliding table 112 and the stop block 102; the locking member 108 sequentially penetrates through the pressing block 103 and the trapezoidal sliding table 112 and is in threaded connection with the wedge 106, a boss structure 10802 is arranged on a rod body 10801 of the locking member, as shown in fig. 10, the cover plate 109 is fixedly arranged on the pressing block 103 through a bolt 111 and is matched with the pressing block 103 to lock the boss structure 10802, as shown in fig. 4; two ends of the connecting rod 104 are respectively connected with the pressing block 103 and the stop block 102 through a pin 105; the locking member 108 pulls the connecting rod 104 to drive the stop block 102 to move by driving the pressing block 103 to move, and referring to fig. 3 and 6, the stop block 102, the pressing block 103, the connecting rod 104, the locking member 108, the trapezoidal sliding table 112 and the wedge 106 are combined to lock or release the cutter shaft.

Boss structure 10802 includes gomphosis subassembly one and with gomphosis subassembly one matched with gomphosis subassembly two, gomphosis subassembly one sets up on the body of rod of retaining member, rotatable setting between gomphosis subassembly one and the gomphosis subassembly two, circumference is provided with annular internal tooth 10301 on briquetting 103 and boss structure 10802's the contact surface, gomphosis subassembly one, gomphosis subassembly two and annular internal tooth 10301 three combination are used for preventing retaining member 108 not hard up.

The first embedded component comprises a boss mounting seat 1080201, a boss 1080202 and sliding sheets 1080203, wherein the boss 1080202 is arranged on the boss mounting seat, the boss mounting seat is arranged on the rod body of the locking member, and the two sliding sheets 1080203 are rotatably arranged on the boss mounting seat 1080201 and positioned at two sides of the boss 1080202, as shown in fig. 11;

the second fitting assembly includes a bolt head 1080204, a first fitting groove 1080205 and second fitting grooves 1080206, the first fitting groove 1080205 and the two second fitting grooves 1080206 are both provided on an end surface of one end of the bolt head 1080204, and the two second fitting grooves 1080206 are divided to be located on both sides of the first fitting groove 1080205, see fig. 12;

the first embedding groove 1080205 and the boss 1080202 and the second embedding groove 1080206 and the sliding piece 1080203 are in clearance fit, an elastic piece 1080207 is further arranged between the second embedding groove 1080206 and the sliding piece 1080203, and the elastic piece 1080207 is used for enabling the sliding piece 1080203 to extend out of or retract into the second embedding groove 1080206;

the first fitting groove 1080205, the boss 1080202, the second fitting groove 1080206, the slide piece 1080203, the spring piece 1080207 and the annular internal teeth 10301 are combined to prevent the threaded rod from loosening.

In the embodiment, a stabilizer bar 110 is further included, the stabilizer bar 110 penetrates through the pressing block 103 and is embedded in the trapezoidal sliding table 112, and the stabilizer bar 110 and the trapezoidal sliding table 112 are relatively slidable.

In the present embodiment, the contact surfaces of the knife shaft and the wedge 106, the knife shaft and the stopper 102, and the knife shaft and the trapezoidal sliding table 112 are provided with clamping parts 201, and referring to fig. 7, the clamping parts 201 are used for fixing the knife shaft and the wedge 106, the stopper 102, and the trapezoidal sliding table 112 relatively.

In this embodiment, an elastic pad 107 is further disposed between the trapezoidal sliding table 112 and the wedge 106, and the elastic pad is made of rubber.

In this embodiment, the bolt head 1080204 is a hexagonal head.

In this embodiment, the retaining member 108 is a locking lever.

The hob assembly provided by the embodiment is applied, and the specific steps are as follows:

hob 2 is installed, see fig. 9: taking the tool apron plate 101 on one side as an example, the hexagonal head is screwed counterclockwise, the locking rod moves in the direction away from the wedge block 106 (at this time, the two embedding components in the locking rod rotate counterclockwise by a certain angle relative to the one embedding component, the sliding sheet 1080203 retracts into the second embedding slot 1080206 under the action of the inner wall of the second embedding slot 1080206 and the elastic sheet 1080207), the locking rod drives the pressing block 103 to move, the pressing block 103 acts on the stopper 102 through the connecting rod 104, so that the stopper 102 moves in the direction away from the hob 2 along the inner wall of the groove, and at this time, a cavity for accommodating a cutter shaft is formed among the pressing block 103, the wedge block 106, the trapezoidal sliding table 112 and the stopper 102 to form a notch, and the hob 2 is installed through the notch;

then the hexagonal head is screwed clockwise, the locking lever moves towards the opposite direction close to the wedge block 106 (at this time, the two embedded components in the locking lever rotate clockwise by a certain angle relative to the embedded component, the sliding sheet 1080203 extends out of the second embedded groove 1080206 and is clamped with the annular internal teeth 10301 under the action of the inner wall of the second embedded groove 1080206 and the elastic sheet 1080207. It should be noted that, because the elastic sheet has certain elasticity in the screwing process, the sliding sheet can be retracted into the second embedded groove under the action of the annular internal teeth, the screwing action cannot be hindered), the locking lever tensions the wedge block 106 and the pressing block 103, wherein the wedge block 106 counteracts the pulling force of the locking lever at the earlier stage against the wedge block under the action of the elastic pad 107, and the clamping is avoided; the pressing block 103 moves towards the direction close to the wedge block 106 and drives the stop block 102 to move towards the direction close to the hob 2 along the inner wall of the groove through the connecting rod 104, finally, a notch of a cavity for accommodating the cutter shaft is formed among the pressing block 103, the wedge block 106, the trapezoid sliding table 112 and the stop block 102, the hexagonal head continues to be screwed clockwise, the pressing block 103 is in contact with the cutter holder plate, the locking rod tightens the wedge block 106 to compress the cutter shaft and the elastic pad 107 until the cutter shaft is in contact with the stop block 102, and therefore locking of the hob 2 is achieved.

The principle of looseness prevention of the hob 2 is as follows:

when the hexagonal head is rotated clockwise, under the action of the spring piece 1080207 and the inner wall of the second embedding groove 1080206, the sliding piece 1080203 extends out of the second embedding groove 1080206 to be clamped with the annular inner teeth 10301 of the pressing piece 103, and in the state that the hexagonal head is not rotated counterclockwise, the annular inner teeth 10301 of the pressing piece 103 can block the sliding piece 1080203 and the threaded rod from rotating in the reverse direction, so that the locking rod is prevented from loosening, and the locking reliability of the hob 2 is improved, as shown in fig. 13.

If the hob 2 needs to be loosened, the hexagon head needs to be rotated anticlockwise under the action of external force, the sliding piece 1080203 is retracted into the second embedding groove 1080206 under the action of the elastic piece 1080207 and the inner wall of the second embedding groove 1080206 and is not contacted with the annular inner tooth 10301 of the pressing piece 103, and the locking rod can continue to rotate anticlockwise until the hob 2 is loosened, as shown in fig. 14.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The hob assembly is characterized by comprising a hob holder (1), a hob (2) and a locking assembly, wherein the hob holder (1) comprises two identical hob holder plates (101), the hob holder plates (101) are mutually connected, a groove for accommodating the locking assembly is formed in each hob holder plate, the two locking assemblies are respectively and correspondingly arranged in the grooves of the two hob holder plates, and the hob (2) is arranged on the locking assembly through a hob shaft of the hob;

the locking assembly comprises a stop block (102), a pressing block (103), a connecting rod (104), a wedge block (106), a locking member (108), a cover plate (109) and a trapezoidal sliding table (112), wherein the wedge block (106) and the pressing block (103) are arranged in a groove in a sliding manner, the stop block (102) is arranged on the inner wall of the groove in a sliding manner along the depth direction of the groove, the trapezoidal sliding table (112) is fixedly arranged in the groove and is positioned between the wedge block (106) and the pressing block (103), and a cavity for accommodating a cutter shaft is formed among the pressing block (103), the wedge block (106), the trapezoidal sliding table (112) and the stop block (102); the locking piece (108) sequentially penetrates through the pressing block (103) and the trapezoidal sliding table (112) and is in threaded connection with the wedge block (106), the locking piece comprises a rod body (10801) and a boss structure (10802) arranged on the rod body, and the cover plate (109) is arranged on the pressing block (103) and is matched with the pressing block (103) to lock the boss structure (10802); two ends of the connecting rod (104) are respectively connected with the pressing block (103) and the stop block (102) through pin shafts; thereby retaining member (108) pull connecting rod (104) and drive dog (102) motion through driving briquetting (103) motion, and dog (102), briquetting (103), connecting rod (104), retaining member (108), trapezoidal slip table (112) and voussoir (106) combination realize the locking or loosen the arbor.

2. The hob assembly according to claim 1, wherein the boss structure (10802) includes a first engaging assembly and a second engaging assembly matched with the first engaging assembly, the first engaging assembly is disposed on the rod body of the locking member, the first engaging assembly and the second engaging assembly are rotatably disposed therebetween, an annular internal tooth (10301) is circumferentially disposed on a contact surface of the pressing block (103) and the boss structure (10802), and the combination of the first engaging assembly, the second engaging assembly and the annular internal tooth (10301) is used for preventing the locking member (108) from loosening.

3. The hob assembly according to claim 2, wherein the first engagement assembly includes a boss mounting seat (1080201), a boss (1080202) and sliding pieces (1080203), the boss (1080202) is disposed on the boss mounting seat, the boss mounting seat is disposed on the rod body of the locking member, and the two sliding pieces (1080203) are rotatably disposed on the boss mounting seat (1080201) and located at two sides of the boss (1080202);

the second embedding component comprises a bolt head (1080204), a first embedding groove (1080205) and a second embedding groove (1080206), the first embedding groove (1080205) and the two second embedding grooves (1080206) are arranged on the end surface of one end of the bolt head (1080204), and the two second embedding grooves (1080206) are divided into two sides positioned on the first embedding groove (1080205);

the first embedding groove (1080205) is in clearance fit with the boss, the second embedding groove (1080206) is in clearance fit with the sliding piece (1080203), an elastic piece (1080207) is further arranged between the second embedding groove (1080206) and the sliding piece (1080203), and the elastic piece (1080207) is used for enabling the sliding piece (1080203) to extend out of or retract into the second embedding groove (1080206);

the first embedding groove (1080205), the boss, the second embedding groove (1080206), the sliding sheet (1080203), the elastic sheet (1080207) and the annular internal tooth (10301) are combined to prevent the threaded rod from loosening.

4. The hob assembly according to claim 1, further comprising a stabilizer bar (110), wherein the stabilizer bar (110) penetrates through the pressing block (103) and is embedded in the trapezoidal sliding table (112), and the stabilizer bar (110) and the trapezoidal sliding table (112) are relatively slidable.

5. The hob assembly according to claim 1, wherein clamping portions (201) are provided on the contact surface of the arbor and the wedge block (106), the contact surface of the arbor and the stopper (102), and the contact surface of the arbor and the trapezoidal sliding table (112), and the clamping portions (201) are used for fixing the arbor and the wedge block (106), the stopper (102), and the trapezoidal sliding table (112) relative to each other.

6. The hob assembly according to claim 1, characterized in that an elastic pad (107) is further arranged between the trapezoidal sliding table (112) and the wedge block (106).

7. The hob assembly of claim 3, wherein the bolt head (1080204) is a hexagonal head.

8. The hob assembly according to any one of the claims 1 to 7, characterized in, that the locking member (108) is a locking bar.

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