CN221082063U - River slope weeding equipment for river course treatment - Google Patents

Abstract

The utility model provides river slope weeding equipment for river channel treatment, which relates to the technical field of environmental treatment, and comprises a mounting frame, wherein a moving mechanism is arranged on the mounting frame and drives the mounting frame to move to weeds along a calibration direction, so that the weeds are positioned below the mounting frame, a gathering mechanism is arranged on the mounting frame and comprises a first driving part and a gathering part, the first driving part can drive the gathering part to rotate at the bottom of the mounting frame, the gathering part can gather weeds in a rolling way, the weeding mechanism is arranged at one side of the gathering mechanism, which is opposite to the calibration direction, and can comprise a second driving part and a plurality of saw blades, the second driving part drives the saw blades to rotate at the bottom of the mounting frame, so that the saw blades clear the gathered weeds, the gathered weeds are not easy to wind on the saw blades through the weeding mechanism after the gathering mechanism gathers the weeds, the probability of faults of the weeding equipment can be reduced, and the weeding efficiency can be improved.

Description

River slope weeding equipment for river course treatment

Technical Field

The utility model relates to the technical field of environmental treatment, in particular to river slope weeding equipment for river channel treatment.

Background

The rainfall is big in rainy season, and river water flow increases, leads to river bank weeds to rapidly overgrow and floater increases, can seriously destroy river ecological environment to and influence flood control safety, at present in order to guarantee that the river channel is unblocked and the environment is clean and tidy, need clear away river channel weeds, can use weeding equipment generally.

Chinese patent application CN107027415A discloses a weeding apparatus which drives a cutter head to rotate by a motor, and cleans weeds in a river by moving the weeding apparatus over the river using the cutter head.

However, weeds at the river slope of the river are generally piled and grown together, the weeds at the river slope of the river are difficult to wind up and gather by the equipment, the weeds are easy to wind on the saw blade due to the fact that the weeds are directly crushed, after the saw blade is clamped, the weeds wound on the saw blade are required to be disposed of for a long time, and weeding efficiency is low.

Disclosure of utility model

In view of the above, the utility model provides a river slope weeding device for river treatment, which solves the problems that weeds at the river slope of a river are difficult to wind up and gather, so that the weeds are easy to wind on a saw blade, and the weeding efficiency is low.

The technical scheme of the utility model is realized as follows:

The utility model provides river slope weeding equipment for river treatment, which comprises a mounting frame, a moving mechanism, a gathering mechanism and a weeding mechanism, wherein the mounting frame is arranged on the moving mechanism;

The moving mechanism is arranged on the mounting frame and drives the mounting frame to move to weeds along the calibrating direction;

The gathering mechanism is arranged on the mounting frame and comprises a first driving part and a gathering part, and the first driving part is in driving connection with the gathering part and is used for driving the gathering part to rotate so as to enable the gathering part to roll and gather the weeds;

The weeding mechanism is arranged on the mounting frame, the weeding mechanism is located on one side, opposite to the calibration direction, of the gathering mechanism, the weeding mechanism comprises a second driving part and a plurality of saw blades, and the second driving part is connected with the saw blades in a driving mode and used for driving the saw blades to rotate so that the saw blades can clean weeds after gathering in a winding mode.

On the basis of the above technical scheme, preferably, the gathering part comprises a rotating shaft and a plurality of gathering blades, the rotating shaft is rotationally arranged on the mounting frame, one end part of the rotating shaft is in driving connection with the first driving part, the other end part of the rotating shaft is positioned at the bottom of the mounting frame, and the gathering blades are sleeved on the other end part of the rotating shaft.

On the basis of the above technical scheme, preferably, the gathering blade comprises a sleeve and a plurality of blade bodies, the sleeve is sleeved on the rotating shaft, the plurality of blade bodies are arranged on the side wall of the sleeve at intervals, and the blade bodies are sleeved with rubber rings.

On the basis of the above technical scheme, preferably, the gathering part comprises a plurality of rotating shafts and a plurality of gears, the gears are respectively arranged on one end parts of the rotating shafts, a plurality of gathering blades are sleeved on the other end part of each rotating shaft, the gears are sequentially meshed, and the first driving part is in driving connection with the corresponding rotating shaft so as to drive the rotating shafts to synchronously rotate.

On the basis of the above technical scheme, preferably, the moving mechanism comprises a double-shaft motor and two crawler wheels, wherein the double-shaft motor is arranged at the top of the mounting frame, the two crawler wheels are respectively positioned at two opposite sides of the mounting frame, and the double-shaft motor is respectively in driving connection with the two crawler wheels so as to drive the two crawler wheels to drive the mounting frame to move along the calibration direction.

On the basis of the technical scheme, preferably, the outer surface of the crawler wheel is provided with a plurality of protruding blocks, and the protruding blocks are sequentially arranged at intervals.

On the basis of the technical scheme, preferably, the river slope weeding equipment for river management further comprises a protection mechanism, wherein the protection mechanism is arranged on the mounting frame, and the protection mechanism covers the upper portions of the saw blades.

On the basis of the above technical scheme, preferably, the protection mechanism comprises a protection net and a hinged installation piece, wherein the hinged installation piece is arranged on the installation frame and connected with the protection net, so that the protection net is rotatably installed on the installation frame and covers the upper parts of the saw blades.

On the basis of the technical scheme, preferably, the river slope weeding equipment for river management further comprises a protective cover, wherein the protective cover is arranged at the top of the mounting frame, and the protective cover covers the first driving part and the second driving part.

On the basis of the technical scheme, preferably, the protective cover is provided with a plurality of water-permeable grooves.

Compared with the prior art, the river slope weeding equipment for river treatment has the following beneficial effects:

(1) Through setting up moving mechanism on the mounting bracket, moving mechanism can drive the mounting bracket and remove to the weeds department along demarcation direction for the weeds is located the below of mounting bracket, can be equipped with the mechanism of gathering together on the mounting bracket, gather together the mechanism and include first drive division and gather together the portion, first drive division can drive to gather together the portion and rotate in the bottom of mounting bracket, make to gather together the portion and can gather together the weeds and roll up, weeding mechanism can set up in gathering together the mechanism and be directed against demarcation one side, and weeding mechanism can include second drive division and a plurality of saw bit, second drive division can drive a plurality of saw bit and rotate in the bottom of mounting bracket, make a plurality of saw bit clear up the weeds after gathering together the rolling, thereby can gather together the mechanism and clear up weeds through the weeding mechanism, the weeds after gathering is difficult for winding on the saw bit, can reduce weeding equipment probability of breaking down, improve weeding efficiency;

(2) The protection mechanism is arranged on the mounting frame, the protection mechanism covers the upper portions of the saw blades, and the protection mechanism can protect weeds broken by the saw blades, so that the effect of preventing weed fragments from splashing is achieved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the internal structure of a river slope weeding device for river management;

FIG. 2 is a perspective view of a river slope weeding device for river management, according to the present utility model;

FIG. 3 is a schematic view of the gathering mechanism of the present utility model;

Fig. 4 is a schematic structural view of the protection mechanism of the present utility model.

Reference numerals:

1. A mounting frame; 2. a moving mechanism; 21. a biaxial motor; 22. track wheels; 221. a bump; 3. a gathering mechanism; 31. a first driving section; 32. a gathering section; 321. a rotating shaft; 322. gathering the blades; 3221. a sleeve; 3222. a blade body; 323. a gear; 4. a weeding mechanism; 41. a second driving section; 42. a saw blade; 5. a protective mechanism; 51. a protective net; 52. a hinge mount; 6. a protective cover; 61. a water-permeable tank.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 and 2, the river slope weeding device for river treatment comprises a mounting frame 1, a moving mechanism 2, a gathering mechanism 3 and a weeding mechanism 4;

The moving mechanism 2 is arranged on the mounting frame 1, and the moving mechanism 2 drives the mounting frame 1 to move to weeds along the calibrating direction;

The gathering mechanism 3 is arranged on the mounting frame 1, the gathering mechanism 3 comprises a first driving part 31 and a gathering part 32, and the first driving part 31 is in driving connection with the gathering part 32 and is used for driving the gathering part 32 to rotate so that the gathering part 32 gathers the weeds in a rolling way;

The weeding mechanism 4 set up in on the mounting bracket 1, just weeding mechanism 4 is located gather up the mechanism 3 and be away from one side of demarcating the direction, weeding mechanism 4 includes second drive portion 41 and a plurality of saw bit 42, second drive portion 41 and a plurality of the saw bit 42 drive connection is used for driving a plurality of the saw bit 42 is rotatory, so that a plurality of saw bit 42 is gathered up the rolling weeds are cleared up.

In particular, the river slope weeding device for river treatment can be used for cleaning weeds on a river channel, and particularly used for cleaning weeds on a river slope.

The mounting bracket 1 can be the frame construction of U-shaped to the open end of U-shaped is directed downwards, and moving mechanism 2 can install on mounting bracket 1, and moving mechanism 2 can be used for driving mounting bracket 1 and remove along demarcation direction, and the X direction in fig. 1 is demarcation direction, and more clearly, moving mechanism 2 drives mounting bracket 1 and is demarcation direction towards the direction that is close to the weeds removal, makes weeds be located the bottom of mounting bracket 1.

The gathering unit 3 may be disposed on the mounting frame 1, and the gathering unit 3 may include a first driving portion 31 and a gathering portion 32, where the first driving portion 31 is preferably a servo motor, the first driving portion 31 may be disposed at the top of the mounting frame 1, one end of the gathering portion 32 may be rotatably mounted on the mounting frame 1 and be in driving connection with the first driving portion 31, and the other end of the gathering portion 32 may be disposed at the bottom of the mounting frame 1, and the first driving portion 31 may be used to drive the gathering portion 32 to rotate, so that the gathering portion 32 may gather weeds at the bottom of the mounting frame 1, thereby gathering the disordered weeds into a bundle.

The weeding mechanism 4 can be arranged on the mounting frame 1, and the weeding mechanism 4 can be located on one side of the gathering mechanism 3, which faces away from the calibration direction, more clearly, when the moving mechanism 2 drives the mounting frame 1 to move towards weeds, the gathering mechanism 3 is contacted with the weeds first, after the gathering mechanism 3 gathers weeds in a rolling way, the weeding mechanism 4 is contacted with the weeds again, the weeding mechanism 4 can comprise a second driving part 41 and a plurality of saw blades 42, in the embodiment, the second driving part 41 is preferably a servo motor, the second driving part 41 is arranged on the top of the mounting frame 1, the plurality of saw blades 42 are arranged at the bottom of the mounting frame 1, the second driving part 41 and the plurality of saw blades 42 are in driving connection, the second driving part 41 can drive the plurality of saw blades 42 to rotate, so that the weeds after gathering can be cleaned, after the gathering mechanism 3 gathers weeds in a rolling way, the weeds are cleaned through the weeding mechanism 4, the gathered weeds are not wound on the saw blades 42, the probability of failure of weeding equipment can be reduced, and weeding efficiency can be improved.

In this embodiment, three saw blades 42 may be provided, and the three saw blades 42 are disposed in parallel at intervals along the vertical direction, and the three saw blades 42 are respectively in driving connection with the second driving portion 41, and weeds can be cut into chips by the three saw blades 42, so that the cleaning effect is better.

As shown in fig. 1 and 3, in some embodiments, the gathering unit 32 includes a rotating shaft 321 and a plurality of gathering blades 322, where the rotating shaft 321 is rotatably disposed on the mounting frame 1, and one end of the rotating shaft 321 is in driving connection with the first driving unit 31, and the other end of the rotating shaft 321 is located at the bottom of the mounting frame 1, and the plurality of gathering blades 322 are sleeved on the other end of the rotating shaft 321.

Specifically, the gathering unit 32 may include a rotating shaft 321 and a plurality of gathering blades 322, the rotating shaft 321 may be perpendicular to the mounting frame 1, and one end of the rotating shaft 321 may be rotatably disposed on the mounting frame 1, one end of the rotating shaft 321 is further in driving connection with the first driving unit 31, the other end of the rotating shaft 321 is located at the bottom of the mounting frame 1, the plurality of gathering blades 322 are respectively sleeved on the other end of the rotating shaft 321, preferably, the plurality of gathering blades 322 are disposed in parallel with each other, so that the first driving unit 31 may rotate by driving the rotating shaft 321, so that the rotating shaft 321 drives the plurality of gathering blades 322 to rotate synchronously, so that the plurality of gathering blades 322 may gather weeds in a winding manner, and the gathering effect may be better.

As shown in fig. 1 and 3, in some embodiments, the gathering blade 322 includes a sleeve 3221 and a plurality of blade bodies 3222, the sleeve 3221 is sleeved on the rotating shaft 321, a plurality of blade bodies 3222 are disposed on a side wall of the sleeve 3221 at intervals, and a rubber ring is sleeved on the blade bodies 3222.

Specifically, gathering blade 322 may include sleeve 3221 and a plurality of blade body 3222, sleeve 3221 can be overlapped on pivot 321 for pivot 321 can drive sleeve 3221 rotatory, and a plurality of blade bodies 3222 can set up on sleeve 3221's lateral wall along sleeve 3221's circumference interval, and in this embodiment, set up on sleeve 3221's circumference lateral wall by three blade body 3222 interval, can overlap on every blade body 3222 and be equipped with the rubber circle, and the rubber circle can increase blade body 3222's roughness of surface for frictional force between blade body 3222 and the weeds grow, thereby the rolling that can be better gathers together weeds.

As shown in fig. 1 and 3, in some embodiments, the gathering unit 32 includes a plurality of rotating shafts 321 and a plurality of gears 323, the plurality of gears 323 are respectively disposed on one end of the plurality of rotating shafts 321, a plurality of gathering blades 322 are sleeved on the other end of each rotating shaft 321, and the plurality of gears 323 are sequentially meshed, and the first driving unit 31 is in driving connection with a corresponding one of the rotating shafts 321, so as to drive the plurality of rotating shafts 321 to rotate synchronously.

Specifically, the gathering unit 32 may include a plurality of rotating shafts 321 and a plurality of gears 323, where the plurality of rotating shafts 321 may be disposed on the mounting frame 1 at intervals, and one end of the rotating shaft 321 is rotationally connected with the mounting frame 1, the plurality of gears 323 may be disposed on one end of the plurality of rotating shafts 321, and the other end of each rotating shaft 321 may be sleeved with a plurality of gathering blades 322, and the plurality of gears 323 may be sequentially meshed, so that the plurality of rotating shafts 321 may synchronously rotate through the plurality of gears 323, and the first driving unit 31 may be in driving connection with the corresponding one of the rotating shafts 321, so that the first driving unit 31 may drive one of the rotating shafts 321 to rotate, and may drive other rotating shafts 321 to synchronously rotate, and may drive the plurality of rotating shafts 321 to rotate to gather weeds, thereby better gathering weeds.

As shown in fig. 1 and 2, in some embodiments, the moving mechanism 2 includes a dual-shaft motor 21 and two crawler wheels 22, the dual-shaft motor 21 is disposed at the top of the mounting frame 1, and the two crawler wheels 22 are respectively located at two opposite sides of the mounting frame 1, and the dual-shaft motor 21 is respectively in driving connection with the two crawler wheels 22, so as to drive the two crawler wheels 22 to drive the mounting frame 1 to move along the calibration direction.

Specifically, the moving mechanism 2 can include biax motor 21 and two crawler wheels 22, biax motor 21 can keep flat and set up in the top of mounting bracket 1, and two relative output shafts of biax motor 21 can extend towards the relative both sides of mounting bracket 1 respectively and set up, two crawler wheels 22 are located the relative both sides of mounting bracket 1 respectively, two relative output shafts of biax motor 21 are connected with two crawler wheels 22 drive respectively, biax motor 21 can drive two crawler wheels 22 and drive mounting bracket 1 and remove, in this embodiment, biax motor 21 can drive two crawler wheels 22 and drive mounting bracket 1 along the demarcation direction towards being close to ruderal direction, can very steadily drive mounting bracket 1 through crawler wheel 22 and remove on the river slope, conveniently clear up the ruderal on the river slope.

As shown in fig. 2, in some embodiments, a plurality of bumps 221 are disposed on the outer surface of the crawler wheel 22, and the bumps 221 are sequentially spaced apart.

Specifically, a plurality of bumps 221 may be disposed on the outer surface of the crawler 22, more specifically, a plurality of bumps 221 may be disposed on the surface of the crawler 22 contacting with the ground, in this embodiment, the bumps 221 are rubber blocks, the bumps 221 are uniformly spaced on the outer surface of the crawler 22, and the bumps 221 may increase the roughness of the surface of the crawler 22, so that the crawler 22 may move on the river slope more stably.

As shown in fig. 1 and 4, in some embodiments, the river slope weeding apparatus for river management further includes a protection mechanism 5, where the protection mechanism 5 is mounted on the mounting frame 1, and the protection mechanism 5 covers over a plurality of saw blades 42.

Specifically, river slope weeding equipment for river course treatment can also include protection machanism 5, and protection machanism 5 can be installed on mounting bracket 1 to protection machanism 5 can cover the top of locating a plurality of saw blades 42, and when a plurality of saw blades 42 are clearing up weeds, protection machanism 5 can protect the weeds that saw blade 42 was smashed, thereby has reached the effect that can prevent that the weed piece from splashing, can prevent that the weed piece from splashing to the foot of people.

As shown in fig. 4, in some embodiments, the protection mechanism 5 includes a protection net 51 and a hinge mounting member 52, where the hinge mounting member 52 is disposed on the mounting frame 1 and connected to the protection net 51, so that the protection net 51 is rotatably mounted on the mounting frame 1 and covers a plurality of saw blades 42.

Specifically, the protection mechanism 5 may include a protection net 51 and a hinge mounting member 52, the protection net 51 may be in a grid-like structure, and the cross section of the protection net 51 is in an L-shaped structure, the hinge mounting member 52 is preferably a hinge, the hinge mounting member 52 may be mounted on the mounting frame 1, and one end of the protection net 51 may be connected with the hinge mounting member 52, so that the protection net 51 may rotate relative to the mounting frame 1, when weeds need to be removed, the protection net 51 may be rotated toward the saw blade 42, so that the protection net 51 is covered above the saw blade 42, splashing of the weed debris may be prevented, and when residual debris on the saw blade 42 is excessive, the protection net 51 may be rotated in a direction away from the saw blade 42, so that the debris is conveniently removed.

As shown in fig. 1 and 2, in some embodiments, the river slope weeding apparatus for river management further includes a protection cover 6, the protection cover 6 is mounted on the top of the mounting frame 1, and the protection cover 6 covers the first driving part 31 and the second driving part 41.

Specifically, the river slope weeding device for river course treatment can further comprise a protective cover 6, the protective cover 6 can be installed at the top of the installation frame 1, the protective cover 6 can cover the upper portions of the first driving part 31 and the second driving part 41, and when weeding is performed on a river course, the protective cover 6 can prevent foreign matters such as stones and wood from smashing the first driving part 31 and the second driving part 41, so that the protective effect can be achieved.

As shown in fig. 2, in some embodiments, the protection cover 6 is provided with a plurality of water-permeable grooves 61.

Specifically, the protective cover 6 can be provided with a plurality of water-permeable grooves 61, and the water-permeable grooves 61 are arranged at intervals, so that water flow can flow through the water-permeable grooves 61 when weeding is performed on a river channel, and the water can conveniently move in the water.

When the river slope weeding device for river treatment provided by the utility model is used, the two crawler wheels 22 are driven by the double-shaft motor 21 to drive the mounting frame 1 to move towards weeds along the calibrated direction, so that the weeds are positioned below the mounting frame 1, then the gathering part 32 is driven to rotate by the first driving part 31, so that the weeds below the mounting frame 1 are gathered by the gathering part 32 in a rolling way, finally the plurality of saw blades 42 are driven to rotate by the second driving part 41, the plurality of saw blades 42 can clear the gathered weeds, the gathered weeds are not easy to wind on the saw blades 42, the probability of faults of the weeding device can be reduced, and the weeding efficiency is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. River slope weeding equipment for river course treatment, its characterized in that: comprises a mounting frame (1), a moving mechanism (2), a gathering mechanism (3) and a weeding mechanism (4);

The moving mechanism (2) is arranged on the mounting frame (1), and the moving mechanism (2) drives the mounting frame (1) to move to weeds along the calibrating direction;

The gathering mechanism (3) is arranged on the mounting frame (1), the gathering mechanism (3) comprises a first driving part (31) and a gathering part (32), and the first driving part (31) is in driving connection with the gathering part (32) and is used for driving the gathering part (32) to rotate so that the gathering part (32) gathers the weeds in a rolling way;

The weeding mechanism (4) is arranged on the mounting frame (1), the weeding mechanism (4) is located on one side, opposite to the calibration direction, of the gathering mechanism (3), the weeding mechanism (4) comprises a second driving part (41) and a plurality of saw blades (42), the second driving part (41) and the saw blades (42) are in driving connection, and the weeding mechanism is used for driving the saw blades (42) to rotate so that the saw blades (42) can clear up weeds after gathering.

2. The river slope weeding apparatus for river course remediation according to claim 1, wherein: the gathering part (32) comprises a rotating shaft (321) and a plurality of gathering blades (322), the rotating shaft (321) is rotationally arranged on the mounting frame (1), one end part of the rotating shaft (321) is in driving connection with the first driving part (31), the other end part of the rotating shaft (321) is positioned at the bottom of the mounting frame (1), and the gathering blades (322) are sleeved on the other end part of the rotating shaft (321).

3. A river slope weeding apparatus for river course remediation according to claim 2, wherein: the gathering blade (322) comprises a sleeve (3221) and a plurality of blade bodies (3222), the sleeve (3221) is sleeved on the rotating shaft (321), the plurality of blade bodies (3222) are arranged on the side wall of the sleeve (3221) at intervals, and the blade bodies (3222) are sleeved with rubber rings.

4. A river slope weeding apparatus for river course remediation according to claim 2, wherein: the gathering part (32) comprises a plurality of rotating shafts (321) and a plurality of gears (323), the gears (323) are respectively arranged on one end part of the rotating shafts (321), a plurality of gathering blades (322) are sleeved on the other end part of each rotating shaft (321), the gears (323) are sequentially meshed, and the first driving part (31) is in driving connection with one corresponding rotating shaft (321) so as to drive the rotating shafts (321) to synchronously rotate.

5. The river slope weeding apparatus for river course remediation according to claim 1, wherein: the moving mechanism (2) comprises a double-shaft motor (21) and two crawler wheels (22), the double-shaft motor (21) is arranged at the top of the mounting frame (1), the two crawler wheels (22) are respectively located at two opposite sides of the mounting frame (1), and the double-shaft motor (21) is respectively connected with the two crawler wheels (22) in a driving mode so as to drive the two crawler wheels (22) to drive the mounting frame (1) to move along the calibration direction.

6. The river slope weeding apparatus for river course remediation according to claim 5, wherein: the outer surface of the crawler wheel (22) is provided with a plurality of protruding blocks (221), and the protruding blocks (221) are sequentially arranged at intervals.

7. The river slope weeding apparatus for river course remediation according to claim 1, wherein: the saw blade device further comprises a protection mechanism (5), wherein the protection mechanism (5) is installed on the installation frame (1), and the protection mechanism (5) is covered above the saw blades (42).

8. The river slope weeding apparatus for river course remediation according to claim 7, wherein: the protection mechanism (5) comprises a protection net (51) and a hinged mounting piece (52), wherein the hinged mounting piece (52) is arranged on the mounting frame (1) and connected with the protection net (51), so that the protection net (51) is rotatably mounted on the mounting frame (1) and covers the upper parts of the saw blades (42).

9. The river slope weeding apparatus for river course remediation according to claim 1, wherein: the novel electric motor further comprises a protective cover (6), wherein the protective cover (6) is installed at the top of the installation frame (1), and the protective cover (6) covers the upper parts of the first driving part (31) and the second driving part (41).

10. The river slope weeding apparatus for river course remediation according to claim 9, wherein: a plurality of water-permeable grooves (61) are formed in the protective cover (6).