CN215048015U - Hob clamp of shield machine - Google Patents

Abstract

The utility model relates to a hobbing cutter clamp of a shield machine, belonging to the technical field of shield machine equipment, and the key point of the technical proposal is that the hobbing cutter clamp comprises two clamping arms which are parallel to each other; a plurality of connecting shafts are arranged between the two clamping arms; the clamping arm is connected with the connecting shaft in a sliding manner along the length direction of the connecting shaft; two ends of the connecting shaft are respectively fixed with a limiting stop block; the lower end of the clamping arm is provided with a mounting hole for penetrating through the cutter shaft; a positioning block is fixed at the lower end of the clamping arm, and a V-shaped groove for placing and positioning the cutter shaft is formed in the upper part of the positioning block; a locking shaft arranged in parallel with the connecting shaft is arranged below the connecting shaft, and the locking shaft axially penetrates through the two clamping arms; the circumferential surfaces of the two ends of the locking shaft are respectively provided with a connecting external thread, and the outer side of the clamping arm is provided with a locking nut meshed with the connecting external thread; the utility model discloses can cooperate lifting device, make things convenient for the efficient to carry out the centre gripping installation to the shield constructs quick-witted hobbing cutter.

Description

Hob clamp of shield machine

Technical Field

The utility model relates to a shield constructs quick-witted equipment technical field, especially relates to a shield constructs quick-witted hobbing cutter anchor clamps.

Background

With the development of urban construction, the shield method is more and more commonly applied to urban rail transit construction. The shield machine is one of indispensable equipment in tunnel construction. In the use and maintenance process of the shield machine, the hob of the shield machine is frequently required to be disassembled and replaced. The structure of the shield machine hob cutter can refer to fig. 1, and comprises a cutter roller 1, a cutter body 2 arranged on the circumferential surface of the cutter roller 1, and a cutter shaft 3 coaxially arranged with the cutter roller 1 and rotatably connected with the cutter shaft.

When the shield machine hob needs to be taken out of the hob box, the shield machine hob needs to be clamped by a mechanical arm or lifted by a lifting device matched with a hob clamp. The method for moving the hob by using the hoisting equipment and the hob fixture has more flexible use occasions, so the method has wider application in actual production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a shield constructs quick-witted hobbing cutter anchor clamps can cooperate lifting device, makes things convenient for the efficient to carry out the centre gripping installation to the shield constructs quick-witted hobbing cutter.

The above technical purpose of the present invention can be achieved by the following technical solutions: a shield machine hob clamp comprises two clamping arms which are parallel to each other; a plurality of connecting shafts are arranged between the two clamping arms; the clamping arm is connected with the connecting shaft in a sliding manner along the length direction of the connecting shaft; limiting stop blocks are respectively fixed at two ends of the connecting shaft; the lower end of the clamping arm is provided with a mounting hole for penetrating through the cutter shaft; a positioning block is fixed at the lower end of the clamping arm, and a V-shaped groove for placing and positioning the cutter shaft is formed in the upper part of the positioning block; a locking shaft arranged in parallel with the connecting shaft is arranged below the connecting shaft, and the locking shaft axially penetrates through the two clamping arms; the periphery at locking shaft both ends is provided with the connection external screw thread respectively, the outside of centre gripping arm is provided with and is connected the lock nut of external screw thread meshing.

According to the technical scheme, when the hob fixture is used for clamping the hob, the two clamping arms are slid, the distance between the two clamping arms is adaptive to the thickness of the cutter roll, the cutter shaft penetrates through the position of the mounting hole, and the cutter shaft is supported by the V-shaped groove arranged on the positioning block; a locking shaft penetrates between the two clamping arms, and the clamping arms are positioned by screwing a positioning nut; carry out the centre gripping to the rotor through two centre gripping arms to convenient and fast carries out the centre gripping location to the hobbing cutter, and the convenience is removed the hobbing cutter.

Preferably, a base block fixedly connected with the clamping arm is arranged above the positioning block, and a positioning screw rod for vertically positioning the cutter shaft is arranged on the base block; the positioning screw rod axially penetrates through the base block and is in threaded engagement with the base block.

Through the technical scheme, after the hob is installed between the two clamping arms, the lower end of the positioning screw is used for abutting against the circumferential surface of the cutter shaft by rotating the positioning screw, and then the positioning screw is matched with the positioning block to radially position the cutter shaft, so that the state of the hob is more stable when the hob is moved.

Preferably, an operating block with a square cross section is fixed on the upper end face of the positioning screw rod.

Through above-mentioned technical scheme, be fixed with the operation piece that the cross section is the square through the up end at positioning screw, and then make things convenient for the staff to rotate the operation through instruments such as spanners to positioning screw.

Preferably, the mounting hole is a long hole with a length direction along the length direction of the clamping arm.

Through above-mentioned technical scheme, the mounting hole is the rectangular hole of length direction along centre gripping arm length direction for length direction to when carrying out the centre gripping to the hobbing cutter, conveniently insert the arbor in the mounting hole.

Preferably, the connecting shaft comprises an intermediate shaft and side shafts positioned on two sides below the intermediate shaft, and the axes of the intermediate shaft and the locking shaft are positioned on the symmetrical plane of the clamping arm.

Through the technical scheme, the connecting shaft comprises the intermediate shaft and the side shafts positioned on two sides below the intermediate shaft, and when the hob is clamped, three stress points on the clamping arms form a stress surface, so that the connecting strength of the two clamping arms is higher; and the axis setting through with jackshaft and locking shaft is on the plane of symmetry of centre gripping arm, and the position distribution of each some stress point is even to make the stress state of centre gripping arm more stable.

Preferably, the cross section of the intermediate shaft and the cross section of the side shaft are both circular.

Through above-mentioned technical scheme, the cross section of jackshaft and side shaft is circular to when assembling jackshaft, side shaft and centre gripping arm, assembly tolerance is littleer, and is more smooth and easy to the slip of centre gripping arm.

Preferably, a rubber pad is fixed on the surface of one side of each of the two clamping arms close to each other.

According to the technical scheme, the rubber pads are respectively fixed on the surfaces of the two clamping arms, which are close to each other, so that the clamping arms are prevented from being in direct contact with the knife roller through the rubber pads; the rubber pad texture is soft, makes the centre gripping arm can play better centre gripping effect to the rotor to the contact wear between centre gripping arm and the rotor has been avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a shield machine hob in the background art.

FIG. 2 is a schematic structural diagram of a shield tunneling machine hob clamp for clamping a hob.

FIG. 3 is a structural schematic diagram of a shield tunneling machine hob fixture.

Fig. 4 is a schematic view showing a positional relationship between the connecting shaft and the locking shaft.

Wherein, 1, a knife roll; 2. a cutter body; 3. a cutter shaft; 4. a clamp arm; 41. mounting holes; 42. a rubber pad; 5. a connecting shaft; 51. an intermediate shaft; 52. a side shaft; 6. a limit stop block; 7. a locking shaft; 71. locking the nut; 8. positioning blocks; 81. a V-shaped groove; 9. a base block; 10. positioning a screw rod; 101. and an operation block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b):

a hob fixture of a shield machine, hereinafter referred to as a hob fixture for short, is shown in FIGS. 2 and 3, and comprises two parallel clamping arms 4; a plurality of connecting shafts 5 are arranged between the two clamping arms 4. The clamping arm 4 is connected with the connecting shaft 5 in a sliding mode along the length direction of the connecting shaft 5, and limiting stop blocks 6 are fixed at two ends of the connecting shaft 5 respectively. The connecting shaft 5 includes an intermediate shaft 51 and side shafts 52 located on both sides below the intermediate shaft 51, and the intermediate shaft 51 and the side shafts 52 are circular in cross section. A locking shaft 7 arranged in parallel with the connecting shaft 5 is arranged below the connecting shaft 5, and the locking shaft 7 axially penetrates through the two clamping arms 4. The axes of the intermediate shaft 51 and the locking shaft 7 are located on the plane of symmetry of the gripping arm 4. The circumferential surfaces of the two ends of the locking shaft 7 are respectively provided with a connecting external thread, and the outer side of the clamping arm 4 is provided with a locking nut 71 engaged with the connecting external thread.

Referring to fig. 3 and 4, the lower end of the clamping arm 4 is provided with a mounting hole 41 for passing through the cutter shaft 3; the mounting hole 41 is a long hole having a longitudinal direction along the longitudinal direction of the clamp arm 4. The lower extreme of centre gripping arm 4 is fixed with locating piece 8, and the upper portion of locating piece 8 is seted up and is used for placing the V type groove 81 of location to arbor 3. A base block 9 fixedly connected with the clamping arm 4 is arranged above the positioning block 8, and a positioning screw 10 for vertically positioning the cutter shaft 3 is arranged on the base block 9; a set screw 10 extends axially through the base block 9 and is in threaded engagement with the base block 9. An operation block 101 having a square cross section is fixed to the upper end surface of the positioning screw 10.

The specific implementation principle of this embodiment is as follows:

when the hob fixture is used for clamping and positioning the hob, the two clamping arms 4 are slid, so that the distance between the two clamping arms 4 is adapted to the thickness of the knife roll 1. The cutter shaft 3 is inserted through the mounting hole 41, and the cutter shaft 3 is supported by using the V-shaped groove 81 provided on the positioning block 8. The locking shaft 7 penetrates between the two clamping arms 4, the clamping arms 4 are positioned by screwing the positioning nuts, and the knife roller 1 is clamped by the two clamping arms 4. By using a tool such as a wrench, the positioning screw 10 is rotated by the operation block 101, and the circumferential surface of the cutter shaft 3 is abutted by the positioning screw 10, so that the cutter shaft 3 is radially positioned, and the hob fixture can more stably clamp the hob.

The connecting shaft 5 comprises an intermediate shaft 51 and side shafts 52 positioned on two sides below the intermediate shaft 51, and when the hob is clamped, three stress points on the clamping arms 4 form a stress surface, so that the connecting strength of the two clamping arms 4 is higher. Both the intermediate shaft 51 and the side shaft 52 have a circular cross-sectional design, and therefore, the assembly efficiency is improved, and the sliding operation of the clamp arm 4 is made smoother. Through setting up the axis of jackshaft 51 and locking shaft 7 on the plane of symmetry of centre gripping arm 4, the position of each point stress is distributed evenly to make the stress of centre gripping arm 4 more stable.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (7)

1. The utility model provides a shield constructs quick-witted hobbing cutter anchor clamps which characterized in that: comprises two parallel clamping arms (4); a plurality of connecting shafts (5) are arranged between the two clamping arms (4); the clamping arm (4) is connected with the connecting shaft (5) in a sliding manner along the length direction of the connecting shaft (5); two ends of the connecting shaft (5) are respectively fixed with a limiting stop block (6); the lower end of the clamping arm (4) is provided with a mounting hole (41) for penetrating through the cutter shaft (3); a positioning block (8) is fixed at the lower end of the clamping arm (4), and a V-shaped groove (81) for placing and positioning the cutter shaft (3) is formed in the upper part of the positioning block (8); a locking shaft (7) arranged in parallel with the connecting shaft (5) is arranged below the connecting shaft (5), and the locking shaft (7) axially penetrates through the two clamping arms (4); the periphery at the two ends of the locking shaft (7) is respectively provided with a connecting external thread, and the outer side of the clamping arm (4) is provided with a locking nut (71) meshed with the connecting external thread.

2. The shield tunneling machine hob fixture according to claim 1, characterized in that: a base block (9) fixedly connected with the clamping arm (4) is arranged above the positioning block (8), and a positioning screw (10) used for vertically positioning the cutter shaft (3) is arranged on the base block (9); the positioning screw (10) axially penetrates through the base block (9) and is in threaded engagement with the base block (9).

3. The shield tunneling machine hob fixture according to claim 2, characterized in that: an operation block (101) with a square cross section is fixed on the upper end face of the positioning screw rod (10).

4. The shield tunneling machine hob fixture according to claim 1, characterized in that: the mounting hole (41) is a long hole with the length direction along the length direction of the clamping arm (4).

5. The shield tunneling machine hob fixture according to claim 1, characterized in that: the connecting shaft (5) comprises an intermediate shaft (51) and side shafts (52) positioned on two sides below the intermediate shaft (51), and the axes of the intermediate shaft (51) and the locking shaft (7) are positioned on the symmetrical plane of the clamping arm (4).

6. The shield tunneling machine hob fixture of claim 5, wherein: the cross sections of the intermediate shaft (51) and the side shaft (52) are circular.

7. The shield tunneling machine hob fixture according to claim 1, characterized in that: rubber pads (42) are respectively fixed on the surfaces of one sides of the two clamping arms (4) close to each other.

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