CN212795374U

CN212795374U - Concrete pipeline forming machine

Info

Publication number: CN212795374U
Application number: CN202020793740.6U
Authority: CN
Inventors: 周俊华; 俞建良; 谢中山
Original assignee: Kunshan Gute Cement Pipe Co ltd
Current assignee: Kunshan Gute Cement Pipe Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-03-26
Anticipated expiration: 2030-05-13

Abstract

The utility model relates to a concrete pipeline forming machine, which comprises a stabilizing frame and a fixed frame, wherein one side of the stabilizing frame, which is close to the fixed frame, is provided with a rotating sleeve head which is rotationally connected with the stabilizing frame, one side of the fixed frame, which is close to the stabilizing frame, is provided with a rotating sleeve head which is rotationally connected with the fixed frame, a mould pipe is arranged between the rotating sleeve head and the rotating sleeve head, one side of the stabilizing frame is provided with a driving component which is used for driving the rotating sleeve head to rotate, one side of the stabilizing frame is provided with a conveying component which is used for conveying concrete to the inside of the mould pipe, and the inner walls of the rotating sleeve head and the rotating; the material blocking piece comprises a material blocking ring which is vertically arranged, and a shielding plate which is horizontally arranged is arranged on the material blocking ring. The baffle ring limits the concrete at two ends of the mould pipe, and the baffle plate limits the concrete with certain thickness, so that the concrete is not easy to separate from the mould pipe. The utility model discloses it is difficult for causing the waste to have the concrete, and processing place sanitation is good, concrete pipe green's effect.

Description

Concrete pipeline forming machine

Technical Field

The utility model belongs to the technical field of the technique of concrete pipe and specifically relates to a concrete pipe make-up machine is related to.

Background

The transportation of groundwater needs to use the pipeline, with a plurality of pipeline end to end, bury in the underground, then let in groundwater in the pipeline, realize the transportation to groundwater. Among the types of pipelines, the concrete pipeline is widely used due to high strength, long service life, environmental protection, no pollution and difficult water leakage. In order to integrally form concrete and improve strength and compactness of the concrete, a centrifugal molding machine is generally used to manufacture a concrete pipe.

The structure of the existing centrifugal molding machine is shown in fig. 6, and includes a frame 100, a mold tube 3 is rotatably connected to the frame 100, a driver 101 for driving the mold tube 3 to rotate is disposed at one end of the mold tube 3, and a conveying device 102 for conveying concrete is disposed at one side of the frame 100. When the concrete pipeline is manufactured, the driver is started, and the driver drives the mould pipe to rotate. And conveying the concrete to a conveying device, wherein one end of the conveying device is positioned in the mould pipe, and the concrete falls onto the inner wall of the mould pipe after being separated from the conveying device and rotates along with the mould pipe. Because the concrete is acted by centrifugal force, the concrete is tightly attached to the inner wall of the mould pipe, thereby forming the concrete pipeline.

The above prior art solutions have the following drawbacks: when concrete is conveyed into the mould pipe, the concrete falling near the end of the mould pipe is easy to separate from the mould pipe after being subjected to centrifugal force, and splashes to the outer side of the mould pipe, so that the waste of the concrete is caused, and the environmental sanitation of a processing field is also polluted.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a concrete pipeline make-up machine, it has the concrete and is difficult for splashing the mould outside to reduce the waste of concrete, protect the effect of processing place sanitation.

The above object of the present invention is achieved by the following technical solutions:

a concrete pipeline forming machine comprises a stabilizing frame and a fixing frame, wherein a rotating sleeve head rotationally connected with the stabilizing frame is arranged on one side, close to the fixing frame, of the stabilizing frame, a rotating sleeve head rotationally connected with the fixing frame is arranged on one side, close to the stabilizing frame, of the fixing frame, a mould pipe is arranged between the rotating sleeve head and the rotating sleeve head, a driving assembly used for driving the rotating sleeve head to rotate is arranged on one side of the stabilizing frame, a conveying assembly used for conveying concrete to the interior of the mould pipe is arranged on one side of the stabilizing frame, and material blocking parts are arranged on the inner walls of the rotating sleeve head and the rotating sleeve head; the material blocking piece comprises a material blocking ring which is vertically arranged, and a shielding plate which is horizontally arranged is arranged on the material blocking ring.

Through adopting above-mentioned technical scheme, drive assembly drives and rotates pullover and rotate, rotates pullover and drives the mould pipe and rotate, and rotatory pullover rotates along with the mould pipe. After the conveying assembly conveys the concrete to the mold pipe, the concrete is separated from the conveying assembly and falls onto the inner wall of the mold pipe, and the mold pipe rotates at a high speed, so that the concrete is subjected to a large centrifugal force and clings to the mold pipe.

When moulding the both ends of concrete pipe, the concrete drops on the inner wall of mould pipe, receives to keep off the spacing of material ring, is difficult for removing along the horizontal direction and flies out the mould pipe. After the concrete on the mould pipe receives the effect of centrifugal force, because the mould pipe can't be parallel with the horizontal plane completely, therefore the concrete can produce the removal of horizontal direction, after the concrete accumulation to certain thickness, concrete and shielding plate butt, the shielding plate makes the difficult departure of concrete mould pipe. Simultaneously, after concrete and shielding plate butt, the conveying assembly shift position carries the concrete to other positions of mould pipe to the concrete in making the mould pipe is difficult for splashing the mould outside of managing, reduces the waste of concrete, protection processing place sanitation and hygiene.

The present invention may be further configured in a preferred embodiment as: the conveying assembly comprises a supporting seat, a conveying support which is connected with the supporting seat in a sliding mode is arranged on the supporting seat, a moving assembly which is used for driving the conveying support to move in the horizontal direction is arranged on the supporting seat, a conveying belt is arranged in the conveying support, a conveying motor which is used for driving the conveying belt to move is arranged on the conveying support, a plurality of connecting arms which are connected with the conveying support and horizontally arranged are arranged at one end of the conveying support, and a splash plate which is vertically arranged is connected to one end, away from the conveying support, of each connecting arm.

Through adopting above-mentioned technical scheme, the concrete on the conveyer belt has inertia along with the conveyer belt motion, breaks away from conveyer belt backward to the motion of oblique below, and the splash shield is spacing to the concrete that breaks away from the conveyer belt, makes the concrete that breaks away from the conveyer belt strike on the splash shield, then falls in the mould pipe. Concrete vertical whereabouts, when contacting with the concrete in mould pipe or the mould pipe, is difficult for producing the square ejection of level to the outside of mould pipe is difficult for splashing, reduces the waste of concrete, protection processing place sanitation.

The present invention may be further configured in a preferred embodiment as: and a feed hopper is arranged at one end of the conveying bracket, which is far away from the splash guard.

Through adopting above-mentioned technical scheme, the feeder hopper is convenient for the workman and carries the concrete on to the conveyer belt, improves material loading efficiency. The feeder hopper also makes the workman when carrying the concrete, and the concrete is difficult for dropping outside the conveyer belt, reduces the waste of concrete, protects processing place sanitation.

The present invention may be further configured in a preferred embodiment as: the splash guard is characterized in that an elastic piece is arranged on the fixing frame, one end, far away from the fixing frame, of the elastic piece is connected with a hook chain, one end, far away from the elastic piece, of the hook chain is provided with a hook, and the side face, far away from the conveying support, of the splash guard is provided with a hook ring.

Through adopting above-mentioned technical scheme, when adding the concrete near mount one end to the mould pipe, the tie point of conveying support and supporting seat is far away from the one end that the conveying support was equipped with the splash shield, and the conveying support takes place easily and rocks from top to bottom to the kinetic energy increase of the concrete that makes the conveyer belt break away from, the easy departure of concrete mould pipe. Use the couple hook to hang on the shackle, the elastic component gives the couple and is close to the pulling force of mount direction, makes the couple stabilize the conveying support in the mould pipe, and the stability of conveying support improves, and kinetic energy reduces when concrete on the conveyer belt breaks away from the conveyer belt, is difficult for splashing the mould outside of managing, reduces the waste of concrete, protection processing place sanitation and hygiene.

The present invention may be further configured in a preferred embodiment as: the stabilizing frame and the fixing frame are both connected with a collecting cover used for collecting concrete splashed out, and the lower end of the collecting cover is provided with an inclined part.

Through adopting above-mentioned technical scheme, collect the cover and block and collect the concrete of departure mould pipe, avoid the concrete to splash to the distance far away apart from the mould pipe, increase the clearance degree of difficulty, cause the concrete extravagant. The inclined part facilitates uniform collection of concrete on the collecting cover by workers.

The present invention may be further configured in a preferred embodiment as: a scraper is connected in the collecting cover in a sliding way.

Through adopting above-mentioned technical scheme, the scraper blade improves the cleaning efficiency who collects the cover, and the workman when clearing up the collection cover, use the scraper blade around collect cover a week can, convenient and fast, and collect difficult residual concrete in the cover, reduce the waste of concrete.

The present invention may be further configured in a preferred embodiment as: one side of stabilizer frame is equipped with support piece, and shown support piece includes the arc, can dismantle on the arc and be connected with a plurality of bracing pieces.

Through adopting above-mentioned technical scheme, the arc is arranged in finalizing the design to the concrete in the mould pipe, avoids mould pipe stall back, and the concrete receives the action of gravity to take place to collapse, leads to concrete pipe to make failure, waste time, raise the cost. The workman uses arc and bracing piece, supports the concrete of mould pipe upper end, waits to the concrete solidification back, detaches the mould pipe with the arc, guarantees concrete pipe's manufacturing efficiency.

The present invention may be further configured in a preferred embodiment as: the lower extreme of steady rest and mount all is equipped with the horizontal plate of level setting, be equipped with a plurality of screw holes on the horizontal plate.

By adopting the technical scheme, when the stabilizing frame or the fixing frame is fixed, the lower end of the stabilizing frame or the fixing frame is buried under the ground, and the horizontal plate improves the stability of the stabilizing frame or the fixing frame, so that the stabilizing frame and the fixing frame are not easy to move downwards, and the levelness of the concrete pipeline forming machine is ensured. In addition, when the stabilizing frame and the fixing frame need to be connected to the ground, the threaded holes facilitate connection of the stabilizing frame and the fixing frame, and stability of the stabilizing frame and the fixing frame is improved.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the sleeve head is rotated and the material blocking parts on the inner wall of the sleeve head are rotated, so that concrete at two ends of the mould pipe is not easy to separate from the mould pipe, waste caused by flying out of the mould pipe due to centrifugal force of the concrete is reduced, and environmental sanitation of a processing field is protected;

2. the splash guard enables the concrete on the conveyor belt to vertically drop into the mould pipe, so that when the concrete is contacted with the mould pipe, the horizontal movement is not easy to generate, the concrete is not easy to separate from the mould pipe, the waste of the concrete is reduced, and the environmental sanitation of a processing field is protected;

3. the feeder hopper improves the material loading efficiency of concrete, and the concrete that causes when reducing the material loading is extravagant.

Drawings

Fig. 1 is a schematic view of the overall structure of a concrete pipe forming machine;

FIG. 2 is an exploded view of the stabilizer related structure;

FIG. 3 is an exploded view of the structure associated with the mount;

FIG. 4 is a schematic view of the overall construction of the transfer assembly;

FIG. 5 is a schematic view of the overall structure of the support member;

fig. 6 is a schematic view of the overall structure of a related art centrifugal molding machine.

In the figure, 1, a stabilizing frame, 11, a rotating sleeve head, 111, a rotating rack, 112, a limiting chute, 12, a horizontal plate, 13, a threaded hole, 14, a rotating rod, 15, a transmission belt, 16, a rotating gear, 2, a fixed frame, 21, a rotating sleeve head, 211, a rotating rack, 22, a hooking chain, 23, a hook, 24, a rotating rod, 25, a rotating gear, 3, a mold tube, 4, a driving component, 41, a driving motor, 5, a conveying component, 51, a supporting seat, 52, a conveying bracket, 53, a moving component, 531, a moving driver, 532, a moving gear, 533, a moving rack, 54, a transmission belt, 55, a transmission motor, 56, a connecting arm, 57, a splash guard, a shackle, 58, a feeding hopper, 6, a material blocking piece, 61, a ring, 62, a shielding plate, 63, a material blocking lug, 7, a collecting cover, 71, an inclined part, 72, a scraper, 8 and a supporting part, 81. arc plate, 82, support rod, 100, frame, 101, driver, 102, conveyer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a concrete pipeline forming machine, including the support piece 8 that is used for carrying the conveying subassembly 5 of concrete and is used for stabilizing concrete pipeline, still including stabilizer 1, rotation pullover 11, mould pipe 3, rotatory pullover 21 and mount 2 that set gradually.

Referring to fig. 2, a driving assembly 4 is arranged on the stabilizing frame 1, the driving assembly 4 includes a driving motor 41 connected to the stabilizing frame 1 and horizontally disposed, the driving assembly 4 further includes a driving belt 15 connected to an output end of the driving motor 41, the driving motor 41 may be a rotating motor, and an output end of the driving motor 41 is located on a side of the stabilizing frame 1 away from the rotating sleeve 11. A rotating rod 14 which is horizontally arranged is rotatably connected in the stabilizing frame 1, and one end of the rotating rod 14 far away from the rotating sleeve head 11 is connected with a transmission belt 15. One end of the rotating rod 14 close to the rotating sleeve head 11 is connected with a rotating gear 16, a driving motor 41 is started, the driving motor 41 drives a transmission belt 15 to rotate, the transmission belt 15 drives the rotating rod 14 to rotate, and the rotating rod 14 drives the rotating gear 16 to rotate.

Referring to fig. 2, the rotating sleeve head 11 is annular, the inner wall of the rotating sleeve head 11 close to the side of the stabilizing frame 1 is connected with a rotating rack 111, the rotating rack 111 is engaged with the rotating gear 16, and after the driving motor 41 is started, the rotating gear 16 drives the rotating sleeve head 11 to rotate.

Referring to fig. 3, a horizontally disposed rotating rod 24 is rotatably connected to the fixing frame 2, and a rotating gear 25 is connected to one end of the rotating rod 24 close to the rotating sleeve head 21. The rotary sleeve head 21 is annular, the inner wall of the rotary sleeve head 21 close to one side of the fixed frame 2 is connected with a rotary rack 211, and the rotary rack 211 is meshed with the rotary gear 25. When the rotating sleeve head 21 rotates, the rotating sleeve head 21 drives the rotating rack 211 to rotate, and the rotating rack 211 drives the rotating gear 25 to rotate, so that the rotating rod 24 rotates in the fixed frame 2.

Referring to fig. 3, an elastic member, which may be a spring, is connected to the fixing frame 2 below the rotating rod 24, a hook chain 22 is connected to one end of the elastic member, which is far away from the fixing frame 2, and a hook 23 is connected to one end of the hook chain 22, which is far away from the elastic member.

Referring to fig. 2 and 3, a collecting cover 7 is connected to both the side of the stabilizing frame 1 close to the rotating sleeve head 11 and the side of the fixing frame 2 close to the rotating sleeve head 21. The collecting cover 7 on the stabilizing frame 1 is positioned between the stabilizing frame 1 and the rotating sleeve head 11; the collecting hood 7 on the fixed frame 2 is positioned between the fixed frame 2 and the rotary sleeve head 21. The collecting cover 7 is integrally in the shape of an inverted U-shaped frame, the lower end of the collecting cover 7 is provided with an inclined part 71, the inclined part 71 comprises inclined plates respectively connected with the end heads of the opening end of the collecting cover 7, and the two inclined plates incline towards the direction close to each other. A scraper 72 is slidably connected to the collecting hood 7. After concrete splashes to the collecting cover 7, workers clamp the scraper 72 to drive the scraper 72 to move for a circle along the collecting cover 7, so that the concrete on the collecting cover 7 is pushed to the inclined part 71, and finally the concrete is collected uniformly.

Referring to fig. 2 and 3, the material blocking part 6 is detachably connected to the rotating sleeve head 11 and the rotating sleeve head 21, the material blocking part 6 is annular, the material blocking part 6 comprises a material blocking ring 61 which is vertically arranged, one side of the material blocking ring 61 is connected with a plurality of material blocking convex blocks 63, and one side, away from the material blocking convex blocks 63, of the material blocking ring 61 is connected with a shielding plate 62 which is horizontally arranged.

Referring to fig. 2 and 3, the rotating sleeve head 11 and the rotating sleeve head 21 are both provided with a plurality of integrally L-shaped limiting sliding grooves 112, and the limiting sliding grooves 112 are slidably connected with the material blocking convex blocks 63. When a worker installs the material blocking part 6 in the rotating sleeve head 11 or the rotating sleeve head 21, the material blocking convex block 63 slides along the limiting sliding groove 112, and then the installation of the material blocking part 6 can be completed.

Referring to fig. 2 and 3, the lower ends of the stabilizer 1 and the fixing frame 2 are both connected with a horizontal plate 12, and the horizontal plate 12 is provided with a plurality of threaded holes 13. When the stabilizer 1 or the fixing frame 2 is fixed, the horizontal plate 12 improves the stability of the stabilizer 1 or the fixing frame 2, and the threaded hole 13 facilitates the fixation of the stabilizer 1 or the fixing frame 2.

Referring to fig. 4, the conveying assembly 5 includes a supporting seat 51, a conveying bracket 52 slidably connected to the supporting seat 51 is disposed on the supporting seat 51, the conveying bracket 52 is horizontally disposed, and a moving assembly 53 for driving the conveying bracket 52 to move along a horizontal direction is disposed on the supporting seat 51. The moving assembly 53 includes a moving actuator 531 connected to the support base 51 and vertically disposed, and the moving actuator 531 may be a rotary motor. The output end of the moving driver 531 is located at the upper end of the moving driver 531, the moving gear 532 is connected to the output end of the moving driver 531, and the moving rack 533 engaged with the moving gear 532 is disposed on one side of the transmission bracket 52 close to the moving gear 532. The moving driver 531 is started, the moving driver 531 drives the moving gear 532 to rotate, and the moving gear 532 drives the moving rack 533 to move, so that the horizontal movement of the conveying bracket 52 is realized.

Referring to fig. 4, a conveyor belt 54 is disposed in the conveyor bracket 52, and a conveyor motor 55 for driving the conveyor belt 54 is disposed on a side of the conveyor bracket 52 away from the moving rack 533. The upper surface of the end of the conveying frame 52 provided with the conveying motor 55 is provided with a feed hopper 58, and the feed hopper 58 is communicated with the inside of the conveying frame 52. The worker pours the concrete into the feed hopper 58, the concrete drops through the feed hopper 58 onto the conveyor belt 54, and the concrete follows the conveyor belt 54 in synchronism.

Referring to fig. 4, the conveyor support 52 is positioned away from an open end of the hopper 58 for removing concrete from the conveyor belt 54 on the conveyor belt 54. The end of the transfer frame 52 remote from the hopper 58 is connected to a plurality of connecting arms 56, and the end of the connecting arms 56 remote from the transfer frame 52 is connected to a vertically disposed splash guard 57. A horizontally arranged hook 571 is connected to the side of the splash guard 57 remote from the connecting arm 56.

Referring to fig. 5, the supporting member 8 includes an arc plate 81, the arc plate 81 bends upward, the lower surface of the arc plate 81 is connected with a plurality of clamping blocks, and the supporting member 8 further includes a plurality of supporting rods 82. When fixing arc 81, earlier with bracing piece 82 slope setting, later with the upper end and the chucking piece butt of bracing piece 82, at last with bracing piece 82 to the direction removal that is close to arc 81 can accomplish the fixed of arc 81.

The implementation principle of the embodiment is as follows: after the stabilizer 1 and the fixing frame 2 are fixed, the rotating rack 111 in the rotating sleeve head 11 is engaged with the rotating gear 16, and the rotating rack 211 in the rotating sleeve head 21 is engaged with the rotating gear 25. A shutter is then fitted into the rotating cuff 11 and a shutter is fitted into the rotating cuff 21. Finally the mould tube 3 is mounted between and connected to the two shields.

The moving actuator 531 is actuated to adjust the position of the transferring bracket 52 so that the end of the transferring bracket 52 provided with the splash guard 57 is close to the rotary sleeve 21, and then the hook 23 is hooked in the hook ring 571, and the elastic member gives the hook 23 a pulling force in a direction close to the fixing frame 2. The conveyor motor 55 and drive motor 41 are activated and the worker pours concrete into the hopper 58 which follows the conveyor belt 54 to an end adjacent the splash plate 57 and off the conveyor belt 54. The concrete hits the splash plate 57 and falls vertically down onto the inner wall of the mould tube 3. The worker continuously adjusts the position of the transferring bracket 52 such that the transferring bracket 52 moves in a direction close to the stabilizer 1, during which the worker takes the hook 23 out of the hook loop 571. Thereby completing the preliminary manufacture of the concrete pipe.

When the concrete amount in the mould tube 3 constitutes one concrete pipe, the worker closes all the actuators and moves the delivery assembly 5 to one side of the mould tube 3. Then insert arc 81 in mould pipe 3 to make the upper end of arc 81 and the concrete of mould pipe 3 upper end connect fully, make bracing piece 82 chucking arc 81 at last, make arc 81 be difficult for breaking away from the concrete in mould pipe 3 can. After the concrete in the mould pipe 3 is solidified, the worker can remove the mould pipe 3.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete pipeline make-up machine, includes steady rest (1) and mount (2), its characterized in that: a rotating sleeve head (11) rotatably connected with the stabilizing frame (1) is arranged on one side, close to the fixing frame (2), of the stabilizing frame (1), a rotating sleeve head (21) rotatably connected with the fixing frame (2) is arranged on one side, close to the stabilizing frame (1), of the fixing frame (2), a mold tube (3) is arranged between the rotating sleeve head (11) and the rotating sleeve head (21), a driving assembly (4) used for driving the rotating sleeve head (11) to rotate is arranged on one side of the stabilizing frame (1), a conveying assembly (5) used for conveying concrete to the interior of the mold tube (3) is arranged on one side of the stabilizing frame (1), and material blocking pieces (6) are arranged on the inner walls of the rotating sleeve head (11) and the rotating sleeve head (21); keep off material spare (6) including the fender material ring (61) of vertical setting, be equipped with shielding plate (62) that the level set up on fender material ring (61).

2. The concrete pipe forming machine according to claim 1, wherein: the conveying assembly (5) comprises a supporting seat (51), a conveying support (52) which is connected with the supporting seat (51) in a sliding mode is arranged on the supporting seat (51), a moving assembly (53) which is used for driving the conveying support (52) to move in the horizontal direction is arranged on the supporting seat (51), a conveying belt (54) is arranged in the conveying support (52), a conveying motor (55) which is used for driving the conveying belt (54) to move is arranged on the conveying support (52), a plurality of connecting arms (56) which are connected with the conveying support (52) and are horizontally arranged are arranged at one end of the conveying support (52), and a splash guard (57) which is vertically arranged is connected to one end, far away from the conveying support (52), of each connecting arm (56).

3. The concrete pipe forming machine according to claim 2, wherein: and a feed hopper (58) is arranged at one end of the conveying bracket (52) far away from the splash guard (57).

4. A concrete pipe forming machine according to claim 3, wherein: the fixing frame (2) is provided with an elastic piece, one end, far away from the fixing frame (2), of the elastic piece is connected with a hook chain (22), one end, far away from the elastic piece, of the hook chain (22) is provided with a hook (23), and the side face, far away from the conveying support (52), of the splash guard (57) is provided with a hook ring (571).

5. The concrete pipe forming machine according to claim 1, wherein: the stabilizing frame (1) and the fixing frame (2) are both connected with a collecting cover (7) used for collecting splashed concrete, and the lower end of the collecting cover (7) is provided with an inclined part (71).

6. The concrete pipe forming machine according to claim 5, wherein: a scraper (72) is connected in the collecting cover (7) in a sliding way.

7. The concrete pipe forming machine according to claim 1, wherein: one side of stabilizer (1) is equipped with support piece (8), and support piece (8) shown includes arc (81), can dismantle on arc (81) and be connected with a plurality of bracing pieces (82).

8. The concrete pipe forming machine according to claim 1, wherein: the lower ends of the stabilizing frame (1) and the fixing frame (2) are respectively provided with a horizontal plate (12) which is horizontally arranged, and the horizontal plate (12) is provided with a plurality of threaded holes (13).