CN118637207B - A hammer device for cleaning coal bunker - Google Patents

Abstract

The present invention relates to the technical field of cleaning devices, and discloses a hammer device for cleaning coal bunkers, comprising: a shell, a connecting part, a driving part and a striking part; wherein the connecting part is installed on the top of the shell, and is used to be connected and fixed with a rope; the driving part is installed in the shell, and the striking part is located below the bottom of the shell, and its top is connected to the driving end of the driving part, and the driving part is used to drive the striking part to rotate parallel to the plane where the bottom of the shell is located. The hammer device provided by the present invention has a simpler structural design and lower use and maintenance costs. It drives the hammer head to rotate, on the one hand, so that the hammer head has centrifugal force to impact coal blocks and realize the cleaning function of the coal mine; on the other hand, it uses the centrifugal force of the hammer head to make it swing synchronously, so that the hammer head can clean the coal mine on the plane and at different circumferential positions.

Description

Hammer device for cleaning coal bunker

Technical Field

The invention relates to the technical field of cleaning devices, in particular to a hammer head device for cleaning a coal bunker.

Background

The storage coal silo is the industrial facility for storing coal, and at the in-process of adding the coal material to its inside, after coal material and the contact of a storehouse section of thick bamboo inner wall, there is partial absorption on a storehouse section of thick bamboo inner wall, and as time goes on, the absorptive coal briquette can be thicker and thicker, and then can influence normal unloading, consequently, often need the unscheduled clearance feed bin.

In the prior art, if the publication number is CN118287461A, a cleaning device for a large-scale coal storage silo is disclosed, the cleaning device comprises a top cover rotationally connected with the top of a silo body, a U-shaped plate is arranged in the silo body, and a sliding frame is arranged in the U-shaped plate and further comprises; the cleaning mechanism is located on the sliding frame and solves the problem that coal with larger thickness is difficult to clean.

As another example, publication number is CN219097607U, a mining coal bunker intelligent cleaning device is disclosed, which comprises a lifting mechanism, a working platform and a working mechanical arm, the lifting mechanism comprises a row frame and a power device arranged in the row frame, the row frame is used for being fixed at the top of the coal bunker, the power device is used for being connected with the working platform, the up-down lifting movement of the working platform is realized, and the problems of low cleaning efficiency and high labor intensity of the traditional manual operation on the coal bunker are solved.

From the above-mentioned existing device, it is through setting up the cleaning robot of relative complicacy and accomplish the cleaning operation to the coal bunker, and this type cleaning device, though can guarantee the cleaning effect, its existence use cost and cost of maintenance are high, and clear up relative speed is slow, and is not suitable for the large-scale coal bunker producer that the coal bunker quantity is many, and the coal bunker dead time is limited.

Disclosure of Invention

The invention aims to provide a hammer head device for cleaning a coal bunker, which solves the technical problems.

The invention solves the technical problems by the following technical proposal:

The invention provides a hammer head device for cleaning a coal bunker, which comprises the following components: the device comprises a shell, a connecting part, a driving part and a knocking part;

The connecting part is arranged at the top of the shell and is used for being fixedly connected with the rope;

The driving part is arranged in the shell, the knocking part is positioned below the bottom of the shell, the top of the knocking part is connected with the driving end of the driving part, the driving part is used for driving the knocking part to rotate parallel to the plane of the bottom of the shell, and the knocking part generates centrifugal force during autorotation so that the knocking end repeatedly collides with the coal blocks adsorbed on the inner wall of the coal bunker, and the impacted coal blocks are separated from the coal bunker to realize the function of cleaning the coal blocks;

when the knocking part rotates, circumferential swinging force is generated on a rope connected with the knocking part, so that the whole hammer head device swings synchronously around the inner wall of the coal bin, and the coal blocks which are positioned on the same horizontal plane and at different positions on the inner wall of the coal bin are impacted; the height of the hammer head device is adjusted by the rope to clear coal mines at different height positions.

As a further optimization scheme of the invention, the knocking part comprises a rotary disc, a flexible connecting piece and a hammer head, wherein the rotary disc is connected with the driving end of the driving part, one end of the flexible connecting piece is detachably connected with the outer side of the rotary disc, the other end of the flexible connecting piece is detachably connected with the hammer head, and when the knocking part does not rotate, the flexible connecting piece and the hammer head are in a contracted gesture vertical to the bottom surface of the shell under the action of gravity of the hammer head.

As a further optimization scheme of the invention, the flexible connecting piece is a metal chain with adjustable length, and two ends of the metal chain are respectively fixed with the hammer head and the rotary disc through bolts.

As a further optimization scheme of the invention, the number of the metal chains and the hammer heads is two, and the two metal chains are symmetrically distributed on two sides of the rotary disc.

As a further optimized scheme of the invention, the knocking part further comprises a transition shaft, and two ends of the transition shaft are respectively connected with the driving end of the driving part and the rotary disc.

As a further refinement of the invention, the drive is a hydraulic motor which is connected to an external hydraulic device via a hydraulic feed line.

As a further optimization scheme of the invention, the connecting part comprises a lock catch and a rope clamp, wherein the lock catch is fixed inside the shell, the rope is fixed on the lock catch, and the rope clamp is fixed on the top of the shell and is used for extruding and fixing the outer side of the rope.

As a further optimization scheme of the invention, the hammer head comprises a fixing part, an adjusting part, a balancing weight and a plurality of hammer blocks, wherein one side of the fixing part is connected with a metal chain, the other side of the fixing part is connected with the adjusting part, the plurality of hammer blocks are all in sliding connection with the fixing part, the plurality of hammer blocks are spliced into a complete cylindrical hammer head, the balancing weight is detachably arranged on one side of the fixing part, the integral mass of the hammer head is adjusted by adjusting the number of the balancing weight, and the adjusting part is connected with the plurality of hammer blocks and is used for adjusting the radius of the hammer head.

As a further optimization scheme of the invention, the fixing part comprises a connecting body, a stud and a supporting body, wherein the end part of the stud is fixed with the connecting body, the supporting body is fixedly sleeved on the outer side of the stud, the hammer block is in sliding connection with the connecting body, a notch is formed in the inner side of the hammer block, the balancing weight is sleeved on the outer side of the stud and is positioned in a circular groove formed by a plurality of notches, a fixing knob is installed at one end of the stud far away from the connecting body through threads, and the fixing knob is attached to one side of the balancing weight.

As a further optimization scheme of the invention, the adjusting part comprises an adjusting knob and a plurality of connecting sliding shafts, the adjusting knob is in threaded sleeve connection with one end of the stud close to the connecting body, one side of the adjusting knob is provided with a plurality of through arc-shaped grooves, one side of the connecting body is provided with a plurality of limit sliding grooves corresponding to the arc-shaped grooves, the connecting sliding shafts are correspondingly connected with the sliding ends of the hammer blocks, and the connecting sliding shafts sequentially penetrate through the limit sliding grooves and the arc-shaped grooves.

The invention has the beneficial effects that:

The hammer device provided by the invention has the advantages that the structural design is simpler, the use and maintenance cost is lower, on one hand, the hammer has the centrifugal force to impact coal blocks in a mode of driving the hammer to rotate, the cleaning function of a coal mine is realized, on the other hand, the hammer can synchronously swing by virtue of the centrifugal force of the hammer, so that the hammer can clean the coal mine on a plane and at different circumferential positions, and the driving source is not required to be additionally used for driving the hammer to swing; in addition, the hammer head device is controlled by the external traction mechanism to slowly move downwards, and the cleaning speed of the coal mine on the inner wall of the coal bin can be increased by matching with the high-speed rotation and the swinging action of the hammer head, so that the cleaning time of the coal bin is shortened.

Drawings

FIG. 1 is a schematic structural view of a hammer head device for cleaning a coal bunker;

FIG. 2 is a front view of a hammer head device for cleaning a coal bunker, provided by the invention;

FIG. 3 is a schematic view of the structure of the driving part, the transition shaft and the rotary disk in the hammer head device for cleaning coal bunker;

Fig. 4 is a schematic structural view of a knocking part in a hammer head device for cleaning a coal bunker;

FIG. 5 is a schematic structural view of a connecting part in a hammer head device for cleaning a coal bunker;

FIG. 6 is a schematic view of a hammer head device for cleaning a coal bunker in a state of use;

Fig. 7 is a schematic structural diagram of a second embodiment of a hammer device for cleaning a coal bunker;

FIG. 8 is a cutaway view of a partial position of a hammerhead in a hammerhead apparatus for cleaning a coal bunker in accordance with the present invention;

FIG. 9 is an exploded view of a hammer head device for cleaning a coal bunker provided by the invention;

fig. 10 is a schematic structural view between a hammer block and an adjusting knob in a hammer head device for cleaning a coal bunker.

In the figure: 1. a housing; 2. a connection part; 21. locking; 22. a rope clamp; 3. a driving section; 4. a knocking part; 41. a rotary plate; 42. a flexible connection member; 43. a hammer head; 44. a transition shaft; 45. a fixing part; 451. a connecting body; 452. a stud; 453. a support body; 454. a notch; 455. fixing a knob; 46. an adjusting section; 461. an adjustment knob; 462. connecting a sliding shaft; 463. an arc-shaped groove; 464. limiting sliding grooves; 47. balancing weight; 48. a hammer block; 5. a rope.

Detailed Description

Example 1

The subject matter described herein will now be discussed with reference to example embodiments. It is to be understood that these embodiments are merely discussed so that those skilled in the art may better understand and implement the subject matter described herein and that changes may be made in the function and arrangement of the elements discussed without departing from the scope of the disclosure herein. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.

Referring to fig. 1 to 6, a hammer head device for cleaning a coal bunker includes: a housing 1, a connecting part 2, a driving part 3 and a knocking part 4; wherein, connecting portion 2 installs in the top of casing 1, and it is used for being connected fixedly with rope 5, and connecting portion 2 includes hasp 21 and rope clamp 22, and hasp 21 is fixed in inside casing 1, and rope 5 is fixed in on hasp 21, and rope clamp 22 is fixed in the top of casing 1, and it is used for carrying out the extrusion to rope 5 outside and fixes, makes stable connection between it and the casing 1, can not take place relative position skew when the swing. The driving part 3 is installed in the shell 1, the driving part 3 is a hydraulic motor, and the hydraulic motor is connected with an external hydraulic device through a hydraulic conveying pipe.

The knocking part 4 is positioned below the bottom of the shell 1, the top of the knocking part 4 is connected with the driving end of the driving part 3, the knocking part 4 comprises a rotary disc 41, a flexible connecting piece 42 and a hammer 43, the rotary disc 41 is connected with the driving end of the driving part 3, one end of the flexible connecting piece 42 is detachably connected with the outer side of the rotary disc 41, the other end of the flexible connecting piece 42 is detachably connected with the hammer 43, and when the knocking part 4 does not rotate, the flexible connecting piece 42 and the hammer 43 are in a contracted posture vertical to the bottom surface of the shell 1 under the gravity action of the hammer 43; the hammer 43 is made of special alloy steel, the alloy steel can be stainless steel, steel with copper plating or chrome plating coating on the surface, sparks cannot be generated when collision occurs with the inner wall of a silo, and further safety in a cleaning process is guaranteed, specifically, the flexible connecting piece 42 can be a metal chain with adjustable length, the material of the metal chain is the same as that of the hammer 43, two ends of the metal chain are respectively fixed with the hammer 43 and the rotary disc 41 through bolts, the number of the metal chain and the hammer 43 is two, the two metal chains are symmetrically distributed on two sides of the rotary disc 41, the symmetrically distributed metal chains and the hammer 43 can guarantee that the center of gravity of the rotary disc 41 is kept in the middle when the rotary disc 41 rotates, and the hammer 43 is a quick-change hammer 43 is convenient to use due to the fact that the hammer 43 is a quick-wear part through bolt fixation.

Further, the knocking part 4 further includes a transition shaft 44, two ends of the transition shaft 44 are respectively connected with the driving end of the driving part 3 and the rotary disc 41, and centrifugal force generated when the hammer 43 rotates can be reduced by arranging the transition shaft 44, so that damage to the hydraulic motor is caused, and more acting force is transferred to the casing 1.

When the inner wall of the coal bunker is cleaned, the invention needs to be matched with a traction mechanism, the traction mechanism is fixed at the top of the coal bunker, a rope 5 connected with the traction mechanism is connected and fixed with a connecting part 2, then the rope 5 is lengthened by controlling the traction mechanism, a hammer head device enters the coal bunker, after the hammer head device reaches a cleaning position, the traction mechanism is controlled to stop running, the rope 5 is not lengthened, at the moment, a transition shaft 44 and a rotary disc 41 can rotate together by rotating a hydraulic motor, a metal chain and a hammer head 43 are acted by the rotary disc 41, and move from a sagging posture to a horizontal posture and keep on the same horizontal plane with the rotary disc 41, meanwhile, the rope 5 can swing circumferentially due to the high-speed rotation of the rotary disc 41, and the whole hammer head device swings in the coal bunker along with the rope 5, when the hammer 43 rotating at high speed contacts with the coal blocks adsorbed on the inner wall of the coal bin, impact force can be generated on the hammer, the impacted coal blocks are separated from the coal bin and directly drop down to the discharge hole, the hammer 43 and the coal blocks at different circumferential positions in the plane can be impacted along with continuous rotation of the conical head and integral swinging action of the hammer device, so that the function of cleaning the coal blocks is realized, after the coal mine at the current circumferential position is cleaned, the rope 5 is slowly lengthened by controlling the traction mechanism, the hammer 43 gradually moves down, the coal blocks at different height positions on the inner wall of the coal bin are cleaned, after the hammer device reaches the bottom of the coal bin, the traction mechanism is controlled to enable the rope 5 to move up, the hammer device is pulled to slowly move up, the inner wall of the coal bin can be cleaned again, the repeated times of up and down movement of the hammer device can be selected according to the condition of the coal mine in the coal bin, the hammer head device can be adjusted to a thicker position of the coal block, the hammer head device is driven to the top end position of the coal bin by the traction mechanism after the cleaning is finished, and then the automatic cleaning operation of adsorbing coal mine on the inner wall of the coal bin is finished, and in the cleaning process, the hammer head 43 rotating at high speed is used for impacting the coal mine so as to realize the function of separating the coal block from the inner wall of the coal bin;

Compared with the prior art, the hammer device provided by the invention has the advantages that the structural design is simpler, the use and maintenance cost is lower, on one hand, the hammer 43 can impact coal blocks by centrifugal force in a mode of driving the hammer 43 to rotate, and the cleaning function of a coal mine is realized, on the other hand, the hammer 43 can synchronously swing by virtue of the centrifugal force of the hammer 43, so that the hammer 43 can clean the coal mine on a plane and at different circumferential positions, and the hammer 43 does not need to be driven by a driving source to swing; the main vulnerable part of the invention is the hammer 43, which can be quickly replaced when damaged, and has small loss to the hammer device; in addition, the hammer head device is controlled by the external traction mechanism to slowly move downwards, and the cleaning speed of the coal mine on the inner wall of the coal bunker can be increased by matching with the high-speed rotation and the swinging action of the hammer head 43, so that the cleaning time of the coal bunker is shortened.

Example two

Referring to fig. 7 to 10 in combination, in the above scheme, the hammer 43 is a wearing part, but because the hammer 43 is made of a special alloy material, the manufacturing cost is relatively high, and when the whole hammer 43 cannot meet the use requirement due to the damage of the layout position of the hammer 43, a certain waste is caused by directly replacing the whole hammer 43 and the use cost is increased, so the invention optimizes the scheme according to the problem, specifically as follows: the hammer 43 comprises a fixing part 45, an adjusting part 46, a balancing weight 47 and four hammer blocks 48, one side of the fixing part 45 is connected with a metal chain, the other side of the fixing part is connected with the adjusting part 46, the four hammer blocks 48 are all connected with the fixing part 45 in a sliding manner, the four hammer blocks 48 are spliced into a complete cylindrical hammer 43, in order to increase the impact effect of the hammer 43 on coal blocks, meanwhile, the damage of the reaction force generated by impact on the surface of the hammer 43 is reduced, and circular arc-shaped bulges can be uniformly arranged on the outer side of the hammer blocks 48; the balancing weight 47 can be dismantled and install in one side of fixed part 45, the quantity of balancing weight 47 is equipped with a plurality of, the whole quality of tup 43 is adjusted to accessible adjustment balancing weight 47's quantity, in order to satisfy different clearance demands, adjustment part 46 is connected with four hammer blocks 48 jointly, it is used for adjusting the radius of tup 43, when the volume of coal cinder is great, under the prerequisite of not changing tup 43, through operating adjustment part 46, make four hammer blocks 48 outwards expand, adjust the size of tup 43, in addition, in order to make things convenient for the regulation to hammer block 48 size, can evenly set up stainless steel ball on notch 454 ground, frictional force between balancing weight 47 and the hammer block 48 can be reduced, make hammer block 48 normally remove.

Specifically, the fixing portion 45 includes a connecting body 451, a stud 452 and a supporting body 453, the end portion of the stud 452 is fixed to the connecting body 451, the supporting body 453 is fixedly sleeved on the outer side of the stud 452, the hammer block 48 is slidably connected to the connecting body 451, a notch 454 is formed in the inner side of the hammer block 48, the counterweight 47 is sleeved on the outer side of the stud 452 and is located in a circular groove formed by four notches 454, a fixing knob 455 is mounted on one end of the stud 452, far from the connecting body 451, in a threaded manner, and the fixing knob 455 is attached to one side of the counterweight 47. The adjusting part 46 comprises an adjusting knob 461 and four connecting sliding shafts 462, wherein the adjusting knob 461 is sleeved on one end of the stud 452 close to the connecting body 451 in a threaded manner, one side of the adjusting knob 461 is provided with four through arc-shaped grooves 463, one side of the connecting body 451 is provided with four limiting sliding grooves 464 corresponding to the arc-shaped grooves 463, the four connecting sliding shafts 462 are correspondingly connected with sliding ends of the four hammer blocks 48, and the connecting sliding shafts 462 sequentially penetrate through the limiting sliding grooves 464 and the arc-shaped grooves 463.

It should be noted that, when the hammer 43 in this example is used, if one or more of the hammer blocks 48 are damaged, the fixing knob 455 may be turned to separate from the end of the stud 452, then the counterweight 47 is removed, the damaged hammer block 48 is removed, a new hammer block 48 is installed, the counterweight 47 is sleeved outside the stud 452, the bottom of the lowermost counterweight 47 contacts the bottom of the recess 454, and finally the fixing knob 455 is screwed on the stud 452 to fix the counterweight 47 and the cone block, thereby completing replacement of the hammer block 48; when the size of the hammer 43 needs to be adjusted, the fixing knob 455 can be rotated first to release the fastening effect on the hammer blocks 48, then the adjusting knob 461 is rotated to enable the hammer blocks 48 to slide vertically outside the stud 452, the arc-shaped groove 463 on the fixing knob 463 synchronously generates an outward thrust on the connecting sliding shaft 462, the four hammer blocks 48 synchronously slide outwards along the limit sliding groove 464, the radius of the hammer 43 formed by the hammer blocks 48 after the outward sliding is enlarged, and then the size adjustment function of the hammer 43 is realized, at the moment, if the mass of the hammer 43 needs to be further adjusted to enable the impact effect on the coal blocks to be matched with the current situation, the fixing knob 455 can be disassembled, and the number of the balancing weights 47 can be correspondingly adjusted; therefore, according to the invention, the original integrated hammer block 48 is improved into a plurality of combined forms, on one hand, only the damaged hammer head 43 can be independently replaced, compared with the original replacement mode of the whole hammer head 43, the waste of the hammer head 43 can be avoided, the replacement use cost of the hammer head 43 is reduced, meanwhile, the weight block 47 can be arranged to realize accurate adjustment of the mass of the hammer head 43, and the weight block 47 can be used for adjusting the size of the hammer head 43, compared with the traditional integrated hammer head 43 structure, the weight block is more flexible in use, the use requirements of different knocking effects can be met, and the accurate and effective cleaning effect of the coal blocks can be realized.

The embodiment has been described above with reference to the present embodiment, but the embodiment is not limited to the above embodiment, which is only illustrative and not restrictive, and many forms can be made by those skilled in the art, which are included in the protection of the present embodiment, in light of the present embodiment.

Claims (6)

1. A hammerhead device for cleaning a coal bunker, comprising: a housing (1), a connecting part (2), a driving part (3) and a knocking part (4);

wherein the connecting part (2) is arranged at the top of the shell (1) and is used for being fixedly connected with the rope (5);

The driving part (3) is arranged in the shell (1), the knocking part (4) is positioned below the bottom of the shell (1), the top of the knocking part is connected with the driving end of the driving part (3), the driving part (3) is used for driving the knocking part (4) to rotate in parallel with the plane of the bottom of the shell (1), and the knocking part (4) generates centrifugal force during rotation so that the knocking end repeatedly collides with the coal blocks adsorbed on the inner wall of the coal bunker, and the impacted coal blocks are separated from the coal bunker to realize the cleaning function of the coal blocks;

The knocking part (4) comprises a rotary disc (41), a flexible connecting piece (42) and a hammer head (43), wherein the rotary disc (41) is connected with the driving end of the driving part (3), one end of the flexible connecting piece (42) is detachably connected with the outer side of the rotary disc (41), the other end of the flexible connecting piece is detachably connected with the hammer head (43), and when the knocking part (4) does not rotate, the flexible connecting piece (42) and the hammer head (43) are in a contracted gesture vertical to the bottom surface of the shell (1) under the action of gravity of the hammer head (43);

When the knocking part (4) rotates, circumferential swinging force is generated on a rope (5) connected with the knocking part, so that the whole hammer device swings synchronously around the inner wall of the coal bin, and the coal blocks which are positioned on the same horizontal plane and at different positions on the inner wall of the coal bin are impacted; the height of the hammer head device is adjusted through a lengthening rope (5) so as to clean coal mines at different height positions;

The hammer head (43) comprises a fixing part (45), an adjusting part (46), balancing weights (47) and four hammer blocks (48), one side of the fixing part (45) is connected with a metal chain, the other side of the fixing part is connected with the adjusting part (46), the four hammer blocks (48) are all connected with the fixing part (45) in a sliding mode, the four hammer blocks (48) are spliced into a complete cylindrical hammer head (43), the balancing weights (47) are detachably arranged on one side of the fixing part (45), the whole mass of the hammer head (43) is adjusted by adjusting the number of the balancing weights (47), and the adjusting part (46) is connected with the four hammer blocks (48) and is used for adjusting the radius of the hammer head (43);

The fixing part (45) comprises a connecting body (451), a stud (452) and a supporting body (453), wherein the end part of the stud (452) is fixed with the connecting body (451), the supporting body (453) is fixedly sleeved on the outer side of the stud (452), the hammer block (48) is in sliding connection with the connecting body (451), a notch (454) is formed in the inner side of the hammer block (48), the counterweight (47) is sleeved on the outer side of the stud (452) and is located in a circular groove formed by four notches (454), a fixing knob (455) is installed at one end, far away from the connecting body (451), of the stud (452), and the fixing knob (455) is attached to one side of the counterweight (47);

The adjusting part (46) comprises an adjusting knob (461) and four connecting sliding shafts (462), the adjusting knob (461) is sleeved on one end of a stud (452) close to a connecting body (451) in a threaded mode, four through arc-shaped grooves (463) are formed in one side of the adjusting knob (461), four limiting sliding grooves (464) corresponding to the arc-shaped grooves (463) are formed in one side of the connecting body (451), the four connecting sliding shafts (462) are correspondingly connected with sliding ends of four hammer blocks (48), and the connecting sliding shafts (462) penetrate through the limiting sliding grooves (464) and the arc-shaped grooves (463) in sequence.

2. The hammer head device for cleaning coal bunker according to claim 1, wherein the flexible connecting piece (42) is a metal chain with adjustable length, and two ends of the metal chain are respectively fixed with the hammer head (43) and the rotary disc (41) through bolts.

3. The hammer head device for cleaning coal bunker according to claim 2, wherein two metal chains and hammer heads (43) are arranged, and the two metal chains are symmetrically distributed on two sides of the rotary disc (41).

4. A hammer head device for cleaning coal silos according to claim 3, characterized in that the striking part (4) further comprises a transition shaft (44), both ends of the transition shaft (44) being connected with the driving end of the driving part (3) and the rotary disc (41), respectively.

5. The hammer head device for cleaning coal silos according to claim 4, characterized in that the driving part (3) is a hydraulic motor, which is connected with an external hydraulic device through a hydraulic conveying pipe.

6. The hammer head device for cleaning coal bunker according to claim 5, characterized in that the connecting portion (2) comprises a lock catch (21) and a rope clamp (22), the lock catch (21) is fixed inside the shell (1), the rope (5) is fixed on the lock catch (21), and the rope clamp (22) is fixed on the top of the shell (1) and is used for pressing and fixing the outer side of the rope (5).