Conical cutterhead and vertical shaft heading machine

Abstract

The utility model relates to a conical cutterhead and a vertical shaft heading machine, which are suitable for the technical field of heading equipment. A conical cutter head is characterized in that a plurality of hob installation areas are arranged on the operation end face of the cutter head, each hob installation area extends to the edge of the operation end face from the center of the operation end face of the cutter head, and a plurality of hobs are evenly distributed in the hob installation areas. A guide groove is formed in the operation end face of the cutter head and between every two adjacent hob installation areas. At least one slag feeding mechanism is arranged in at least one hob mounting area; each slag feeding mechanism comprises a slag inlet communicated with the interior of the cutterhead and a slag scraping plate arranged corresponding to the slag inlet; a rock slag collecting mechanism is arranged in the cutter head; the vertical shaft heading machine is characterized by being provided with the conical cutter head. According to the utility model, the large abrasion and frequent replacement of the tunneling cutter can be effectively reduced, the technical support is provided for vertical shaft tunneling, the tunneling period is shortened, and the construction cost is saved.

Description

Technical Field

[0001] The utility model relates to a conical cutter head and a shaft tunneling machine, which are applicable to the technical field of tunneling equipment. Background Art

[0002] A shaft is a passage into the underground space. The traditional drill and blast method has a harsh construction environment, high labor intensity for workers, and it is difficult to adapt to the development of efficient, safe, green, and intelligent construction technologies. The full-face shaft tunneling machine replaces blasting rock breaking with mechanical rock breaking to achieve intelligent mechanical shaft sinking, which is a key link in the development of underground space.

[0003] The Chinese patent with the patent application number 202211510044.X provides a reverse shaft tunneling machine and its cutter head. The cutter head includes a central disk body that is in power connection with the output end of the main drive component installed on the machine body and can rotate, multiple radial arms connected to the central disk body, and hob cutters arranged on the top surfaces of each radial arm. Each radial arm is circumferentially distributed along the central disk body, and a material guiding groove is connected between the bottom surfaces of any two adjacent radial arms in the circumferential direction for covering the main drive component and receiving muck. The bottom surface of each material guiding groove extends obliquely downward so that the received muck slides down to the target position under its own weight.

[0004] When the above patent is used for reverse shaft construction, the rock slag cut by the hob cutters on the cutter head will fall to the lower slag chute by its own weight to complete muck removal. During this process, the rock slag cut by the upper cutters will collide and rub against the lower cutters, which will not only damage the cutter head and cutters, but also affect the tunneling efficiency of the tunneling machine and increase the construction cost. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: in view of the above problems, to provide a conical cutter head and a shaft tunneling machine.

[0006] The technical solution adopted by the utility model is: a conical cutter head, characterized in that: a number of hob installation areas are provided on the working end face of the cutter head, each hob installation area extends from the center position of the working end face of the cutter head to the edge of the working end face, and a number of hob cutters are evenly distributed in the hob installation area. A material guiding groove is provided between adjacent two hob installation areas on the working end face of the cutter head;

[0007] At least one slag inlet mechanism is provided in at least one of the hob installation areas, and the slag inlet mechanism includes a slag inlet communicating with the inside of the cutter head and a slag scraping plate arranged corresponding to the slag inlet;

[0008] A rock slag collection mechanism is provided inside the cutter head for collecting the rock slag entering the inside of the cutter head from the slag inlet and discharging it centrally.

[0009] An installation seat is provided at the edge of the slag inlet, and the slag scraping plate is detachably installed on the installation seat through bolts.

[0010] A protective layer is detachably installed on the force-bearing surface at the top of the slag scraping plate.

[0011] The protective layer is made of cobalt-based alloy material.

[0012] The rock slag collection mechanism has a slag outlet and a material guiding surface that extends obliquely downward from below the slag inlet to the slag outlet.

[0013] The slag inlet is equipped with a slag inlet grille.

[0014] A shaft tunneling machine, characterized in that: it has the conical cutter head described above.

[0015] The beneficial effect of the present utility model is that: by arranging a slag inlet mechanism in the hob installation area, part of the rock slag formed by the hob cutting can be discharged from the slag inlet mechanism through the rock slag collection mechanism, increasing the slag discharge method of the waste slag, so as to reduce the possibility of secondary damage to the lower cutter body of the cutter head caused by the stone slag when the waste slag enters the slag chute along the cutter head during the rotation of the cutter head.

[0016] In the present utility model, a protective layer made of cobalt-based alloy material is provided on the slag scraping force-bearing surface of the slag scraping plate, which improves the slag scraping effect of the slag scraping plate while reducing the contact wear of the slag scraping force-bearing surface of the slag scraping plate and prolongs the service life of the slag scraping plate.

[0017] The present utility model has the advantages of simple structure and reduction of tool loss, etc., can effectively reduce the large wear and frequent replacement of tunneling tools, provides technical support for shaft tunneling, shortens the tunneling period, and saves construction costs. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the cutter head working end face in the embodiment.

[0019] Figure 2 It is a schematic structural diagram of the slag inlet mechanism in the embodiment.

[0020] 1. Hob installation area; 2. Hob; 3. Material guiding groove; 4. Slag inlet mechanism; 41. Slag scraping plate; 42. Slag inlet grille; 43. Installation seat. Specific Embodiments

[0021] Embodiment 1: As Figure 1 shown, this embodiment is a conical cutter head. There are 6 radially evenly distributed hob installation areas on the working end face of the cutter head. Each hob installation area extends from the center position of the working end face of the cutter head to the edge of the working end face. A number of hobs are evenly arranged from the center of the cutter head to the edge of the cutter head within the hob installation area. A material guiding groove is provided between adjacent two hob installation areas.

[0022] In this embodiment, a slag inlet mechanism is provided in each of a pair of centrally symmetric hob installation areas. One slag inlet mechanism is located at about 1 / 3 from the cutter head center to the cutter head edge in the corresponding hob installation area, and the other slag inlet mechanism is located at about 2 / 3 from the cutter head center to the cutter head edge in the corresponding hob installation area.

[0023] As Figure 2 shown, in this example, the slag inlet mechanism includes a slag inlet and a slag scraping plate. The slag inlet is arranged between the hobs on the conical side surface of the conical cutter head and communicates with the inside of the cutter head. A mounting seat is welded at the slag inlet, and the slag scraping plate is installed on the surface of the mounting seat by bolts, and the screw holes are screwed together with hexagon socket head cap screws.

[0024] In this embodiment, the length of the slag scraping plate is set to 250 - 300 mm. At the same time, a protective layer is provided on the force-bearing surface at the top of the slag scraping plate. The protective layer is detachably arranged and can be replaced after wear. The protective layer is made of cobalt-based alloy material.

[0025] In this embodiment, in order to prevent excessive rock slag from getting stuck inside the cutter head, a slag inlet grille is welded at the slag inlet to limit large rocks from entering the slag inlet.

[0026] In this example, a rock slag collection mechanism is provided inside the cutter head. The rock slag collection mechanism has a slag outlet located on the central axis of the cutter head and a material guiding surface that extends obliquely downward from below the slag inlet to the slag outlet. The rock slag entering the inside of the cutter head through the slag inlet is discharged through the slag outlet under the action of the material guiding surface and its own gravity.

[0027] In this embodiment, part of the rock slag formed by the hob cutting directly enters the inside of the cutter head through the slag inlet and is collected and discharged by the rock slag collection mechanism; part of the rock slag enters the material guiding groove and slides down from the edge of the cutter head to the lower slag chute under the action of its own gravity and the inclination angle of the material guiding groove.

[0028] Embodiment 2: This embodiment is a shaft tunneling machine, and the conical cutter head in Embodiment 1 is installed on this shaft tunneling machine.

[0029] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A conical cutter disc, characterized in that: A plurality of roller cutter installation areas are provided on the working end surface of the cutter disc, each roller cutter installation area extends from the center position of the working end surface of the cutter disc to the edge of the working end surface, a plurality of roller cutters are arranged in the roller cutter installation areas, and a material guide groove is provided on the working end surface of the cutter disc and between two adjacent roller cutter installation areas; At least one slag feeding mechanism is provided in at least one of the hob installation areas, and the slag feeding mechanism comprises a slag feeding port connected to the inside of the cutter disc and a slag scraper provided corresponding to the slag feeding port; A rock slag collecting mechanism is provided inside the cutter disc, which is used to collect the rock slag entering the cutter disc from the slag inlet and discharge it centrally.

2. The conical cutter disc according to claim 1, characterized in that: A mounting seat is provided at the edge of the slag inlet, and the slag scraper plate is detachably mounted on the mounting seat by bolts.

3. The conical cutter disc according to claim 1 or 2, characterized in that: The top force-bearing surface of the scraper plate is detachably provided with a protective layer.

4. The conical cutter disc according to claim 3, characterized in that: The protective layer is made of cobalt-based alloy material.

5. The conical cutter disc according to claim 1, characterized in that: The slag collecting mechanism comprises a slag outlet and a material guiding surface extending obliquely downward from below the slag inlet to the slag outlet.

6. The conical cutter disc according to claim 1, characterized in that: The slag inlet is equipped with a slag inlet grid.

7. A shaft boring machine, characterized in that: A conical cutter disc according to any one of claims 1 to 6.

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