Pyramid sleeve type winding drum with mechanical jaw

Abstract

The utility model discloses a pyramid sleeve type winding drum with a mechanical jaw, which comprises a main shaft provided with a pyramid sleeve, the left end of the pyramid sleeve is connected with an extension shaft through a screw, the extension shaft is provided with a spigot matched with the pyramid sleeve, the extension shaft is further provided with a head support assembly, the right end of the pyramid sleeve is provided with a dustproof check ring, and the right end of the dustproof check ring is provided with a screw. A dustproof ring is arranged in the dustproof check ring, and the dustproof check ring abuts against the upper step of the main shaft and is used for mechanically limiting expansion of the winding drum in the maximum circle state. Through the optimized and improved design of the product, the form of the double-stroke oil cylinder is adopted, one stroke is used for controlling the expansion and shrinkage of the winding drum, and the other stroke is used for controlling the mechanical action of the jaw assembly through the hollow sleeve, so that the function of a mechanical jaw is realized on the basis of keeping the reliable structure of the pyramid sleeve type winding drum; therefore, the beneficial effect of preventing the hydraulic jaw from leaking oil to pollute strip steel is achieved, and meanwhile, the equipment cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling equipment, in particular to a pyramid sleeve reel with mechanical jaws. Background Art

[0002] The pyramid sleeve reel is the core component of the coiler of the steel rolling production line. As an important part of the strip steel production in the steel plant, its working principle is to pull the pyramid sleeve on the main shaft to move back and forth left and right through the oil cylinder to realize the up and down movement of the fan-shaped plate, thereby achieving the purpose of expanding and contracting the reel.

[0003] This design enables the reel to adapt to the coiling requirements of strip steel of different diameters.

[0004] The pyramid sleeve reel is widely used in various production lines of strip steel production in steel plants due to its simple and reliable structure and low cost.

[0005] However, due to its structural limitations, the pyramidal sleeve reel of the prior art is widely used in uncoiling operations, and only a small number of pyramidal sleeve reels are used in coiling operations. The jaw structure of the pyramidal sleeve reel is also a hydraulic jaw. The hydraulic jaw has a complex oil supply system design, high price, and is prone to oil leakage and strip contamination. Utility Model Content

[0006] In view of the above technical problems in the related technology, in order to apply the pyramid sleeve reel to the coiling operation and avoid the situation where oil leakage from the hydraulic jaws contaminates the strip, the utility model proposes a pyramid sleeve reel with mechanical jaws, which can overcome the above shortcomings of the prior art.

[0007] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0008] A pyramid sleeve reel with mechanical jaws;

[0009] The pyramidal sleeve reel with mechanical jaws includes a main shaft provided with a pyramidal sleeve, the left end of the pyramidal sleeve is connected to an extension shaft by a screw, the extension shaft is provided with a stopper for cooperating with the pyramidal sleeve, the extension shaft is also provided with a head support component, the right end of the pyramidal sleeve is provided with a dustproof ring, a dustproof ring is provided inside the dustproof ring, the dustproof ring abuts against the upper step of the main shaft, and is used to mechanically limit the expansion of the reel when it is in the maximum circular state.

[0010] Furthermore, the main shaft and the extension shaft are both provided with an internal through hole, the internal through hole of the main shaft is penetrated by a hollow sleeve, bushing two and bushing three are provided between the hollow sleeve and the main shaft, the hollow sleeve is also provided with an internal through hole, the internal through hole of the hollow sleeve is penetrated by a pull rod, bushing four is provided between the right part of the hollow sleeve and the pull rod, the pull rod passes through the internal through hole of the extension shaft, bushing one is provided between the pull rod and the extension shaft, the pull rod and the extension shaft are relatively fixed by a nut one and a step, and the pull rod, the extension shaft and the pyramid sleeve can move axially synchronously.

[0011] Furthermore, the main shaft is provided with two keyways for installing guide keys and transmission keys, a gear is installed on the main shaft, a transmission key is installed between the main shaft and the gear, and a guide key is installed between the main shaft and the pyramid sleeve.

[0012] Furthermore, the right end of the main shaft is threadedly connected to a flange, the right end of the flange is provided with a connecting body, an adjustment pad is installed between the flange and the connecting body, and the connecting body is a split structure; the right end of the flange is bolted to a two-stroke expansion and contraction cylinder, and the right end of the two-stroke expansion and contraction cylinder is provided with a four-channel rotary joint.

[0013] Furthermore, the double-stroke expansion and contraction oil cylinder comprises a cylinder barrel, a piston rod 1 and a piston rod 2, and one end of the piston rod 1 and the piston rod 2 are connected to a piston 1 and a piston 2 respectively.

[0014] Furthermore, the piston rod 1 is threadedly connected to the hollow sleeve via a coupling, the coupling is installed inside the connecting body, and nut 2 and nut 3 are respectively provided at the left and right ends of the coupling; the pull rod is threadedly connected to the piston rod 2, and nut 4 is provided on the thread at the right end of the pull rod; nut 2, nut 3, and nut 4 are all installed inside the connecting body.

[0015] Furthermore, three fan-shaped plates and one jaw fan-shaped plate are provided on the four sides of the pyramid sleeve. The pyramid sleeve and the three jaw fan-shaped plates and one fan-shaped plate are in oblique contact and are provided with lining plates and are limited by a hook head structure. The fan-shaped plates and the jaw fan-shaped plates both clamp the main shaft through a fixed plate to axially limit the fan-shaped plates and the jaw fan-shaped plates. A slide plate 1 is provided on the fan plate and the jaw fan-shaped plate, and a slide plate 2 is provided on the fixed plate.

[0016] Furthermore, the jaw sector plate and the pyramid sleeve are both provided with grooves, the groove of the pyramid sleeve is a dovetail structure and is provided with an inclined wedge, a jaw strip is installed in the groove of the jaw sector plate, the jaw strip is axially limited by the sector plate, the inclined wedge is in inclined contact with the jaw strip and is limited by a hook head structure, and a jaw tooth plate is provided on the jaw strip.

[0017] Furthermore, a pull sleeve is installed on the left part of the hollow sleeve, and the pull sleeve and the hollow sleeve are fixed by a locking nut on the left part of the pull sleeve. The pull sleeve and the inclined wedge are connected by a pin shaft, and the hollow sleeve, the inclined wedge, and the piston rod move synchronously.

[0018] Furthermore, the gear is connected to the motor and the transmission device, and the four-channel rotary joint is connected to the hydraulic oil output device.

[0019] The beneficial effects of the utility model are as follows: through the optimized and improved design of the product of the utility model, a double-stroke oil cylinder is adopted, one stroke is used to control the expansion and contraction of the reel, and the other end stroke controls the mechanical action of the jaw assembly through a hollow sleeve, thereby achieving the function of the mechanical jaw while retaining the reliable structure of the pyramid sleeve reel, thereby achieving the beneficial effect of avoiding oil leakage from the hydraulic jaws to contaminate the strip, and at the same time further reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of a pyramid sleeve reel with mechanical jaws according to an embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional view of a large circular jaw clamping state of a pyramid sleeve reel with mechanical jaws according to an embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional view of a pyramid sleeve reel with mechanical jaws in a loosened state according to an embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of a double-stroke expansion and contraction oil cylinder of a pyramid sleeve-type reel with mechanical jaws according to an embodiment of the utility model;

[0025] In the figure: 1. nut 1; 2. bushing 1; 3. head support component; 4. extension shaft; 5. tie rod; 6. locking nut; 7. pin shaft; 8. wedge; 9. jaw strip; 10. guide key; 11. pyramid sleeve; 12. hollow sleeve; 13. dust ring; 14. dust retaining ring; 15. slide plate 1; 16. slide plate 2; 17. fixing plate; 18. transmission key; 19. gear; 20. bushing 3; 21. bushing 4; 22. flange; 23. Adjusting pad; 24. Connecting body; 25. Double-stroke expansion and contraction cylinder; 26. Four-channel rotary joint; 27. Nut three; 28. Coupling; 29. ​​Nut two; 30. Nut four; 31. Bushing two; 32. Pull sleeve; 33. Jaw sector plate; 34. Lining plate; 35. Jaw tooth plate; 36. Sector plate; 37. Piston rod two; 38. Piston rod one; 39. Piston one; 40. Cylinder barrel; 41. Piston two; 42. Spindle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0027] It should be understood that in the description of the embodiments of the present utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0028] like Figure 1-4As shown, a pyramid sleeve reel with mechanical jaws according to an embodiment of the utility model includes an extension shaft 4, a head support assembly 3, a main shaft 42, a pyramid sleeve 11, a dustproof ring 14, a dustproof ring 13, a guide key 10, a fan-shaped plate 36, a jaw fan-shaped plate 33, a hollow sleeve 12, a locking nut 6, a pull sleeve 32, a pin 7, a bushing 1 2, a bushing 2 31, a bushing 3 20, a bushing 4 21, an inclined wedge 8, a jaw strip 9, a jaw tooth plate 35, a lining plate 34, a slide plate 15, a slide plate 2 16, a fixed plate 17, a gear 19, a transmission key 18, a flange 22, an adjustment pad 23, a connector 24, a double-stroke expansion and contraction cylinder 25, a four-channel rotary joint 26, a coupling 28, a nut 1 1, a nut 2 29, a nut 3 27, a nut 4 30 and other parts.

[0029] The double-stroke expansion and contraction cylinder 25 includes a cylinder barrel 40, a piston 1 39, a piston rod 1 38, a piston 2 41, a piston rod 2 37 and other parts.

[0030] The utility model describes a pyramid sleeve type reel with mechanical jaws, a main shaft 42 is equipped with a pyramid sleeve 11, the left end of the pyramid sleeve 11 is equipped with an extension shaft 4, the extension shaft 4 has a stopper to cooperate with the pyramid sleeve 11 for installation, the extension shaft 4 is connected to the pyramid sleeve 11 by screws, the extension shaft 4 is equipped with a head support component 3, the right end of the pyramid sleeve 11 is equipped with a dustproof retaining ring 14, a dustproof ring 13 is installed in the dustproof retaining ring 14, when the reel is in the maximum circle state, the dustproof retaining ring 14 and the step on the main shaft 42 are close together, so as to mechanically limit the expansion of the reel.

[0031] The utility model discloses a pyramid sleeve reel with mechanical jaws, wherein the main shaft 42 and the extension shaft 4 are provided with through holes inside, the through hole inside the main shaft 42 passes through the hollow sleeve 12, and a bushing 2 31 and a bushing 3 20 are provided between the hollow sleeve 12 and the main shaft 42, and the hollow sleeve 12 also has a through hole inside, and a pull rod 5 passes through the inside of the hollow sleeve 12, and a bushing 4 21 is provided between the right part of the hollow sleeve 12 and the pull rod 5. The pull rod 5 passes through the inner hole of the extension shaft 4, and a bushing 1 2 is provided between the pull rod 5 and the extension shaft 4, and the pull rod 5 and the extension shaft 4 are relatively fixed by a nut 1 and a step, that is, at this time, the pull rod 5, the extension shaft 4, and the pyramid sleeve 11 can be regarded as a whole, and can move together in the axial direction. Compared with the traditional pyramid sleeve reel that moves axially by being driven by a key, this method has higher structural strength and less processing.

[0032] The utility model describes a pyramid sleeve reel with mechanical jaws, wherein a main shaft 42 has two keyways, on which a guide key 10 and a transmission key 18 are respectively installed, a gear 19 is installed on the main shaft 42, and a transmission key 18 is installed between the main shaft 42 and the gear 19, and the main shaft 42 is driven to rotate through the gear 19 and the transmission key 18, and a guide key 10 is installed between the main shaft 42 and the pyramid sleeve 11, and the guide key 10 plays a role in guiding and transmitting torque to the pyramid sleeve 11, and through the main shaft 42 and the guide key 10, when the main shaft 42 rotates, the pyramid sleeve 11 is driven to rotate together.

[0033] The utility model discloses a pyramid sleeve reel with mechanical jaws, wherein a flange 22 is installed at the right end of a main shaft 42, wherein the flange 22 has an internal thread, and the main shaft 42 has an external thread. The flange 22 is screwed together with the external thread of the main shaft 42 to fix the flange 22 to the main shaft 42. A connector 24 is installed at the right end of the flange 22, and an adjustment pad 23 is installed between the flange 22 and the connector 24. The connector 24 is a split structure, and the connector 24 of the split structure has more advantages than the traditional integral connector. During installation, only half of the connector 24 can be installed first, and the parts inside the connector 24 can be adjusted, thereby avoiding repeated disassembly and assembly during the installation and debugging of the reel. A double-stroke expansion and contraction oil cylinder 25 is installed at the right end of the flange 22, and the flange 22 and the double-stroke expansion and contraction oil cylinder 25 are connected by bolts. A four-channel rotary joint 26 is installed at the right end of the double-stroke expansion and contraction oil cylinder 25.

[0034] The utility model discloses a pyramid sleeve reel with mechanical jaws, wherein the piston rod 138 of the double-stroke expansion and contraction oil cylinder 25 is threadedly connected to the hollow sleeve 12 through the coupling 28, and the coupling 28 is installed inside the connector 24. The left and right ends of the coupling 28 are respectively provided with a nut 29 and a nut 3 27, and the nut 29 and the nut 3 27 are tightened to provide a pre-tightening force, which plays a role in preventing the hollow sleeve 12 and the piston rod 138 from loosening. The pull rod 5 is threadedly connected to the piston rod 237, and there is a nut 4 30 on the thread at the right end of the pull rod 5, and the nut 4 30 is tightened to provide a pre-tightening force, which plays a role in preventing the pull rod 5 and the piston rod 237 from loosening. The nut 29, the nut 3 27, and the nut 4 30 are all installed inside the connector 24.

[0035] The utility model discloses a pyramid sleeve reel with mechanical jaws, wherein the pyramid sleeve 11 is provided with three fan-shaped plates 36 and a jaw fan-shaped plate 33 on four sides, the fan-shaped plates 36 and the pyramid sleeve 11 are in inclined contact, the hook structure is limited, and a lining plate 34 is provided between the inclined surface of the fan-shaped plates 36 and the inclined surface of the pyramid sleeve 11, and the lining plate 34 plays a role of sliding and wear resistance. The jaw fan-shaped plates 33 and the pyramid sleeve 11 are in inclined contact, the hook structure is limited, and a lining plate 34 is provided between the inclined surface of the jaw fan-shaped plates 33 and the inclined surface of the pyramid sleeve 11. The fan-shaped plates 36 and the jaw fan-shaped plates 33 are clamped by the fixing plate 17 to clamp the main shaft 42, thereby axially limiting the fan-shaped plates 36 and the jaw fan-shaped plates 33, the fan-shaped plates 36 and the jaw fan-shaped plates 33 are provided with a slide plate 15, and the fixing plate 17 is provided with a slide plate 2 16, and the slide plate 15 and the slide plate 2 16 play a role of sliding and wear resistance.

[0036] The utility model describes a pyramid sleeve reel with mechanical jaws, wherein the jaw sector plate 33 and the pyramid sleeve 11 are both provided with grooves, an inclined wedge 8 is installed in the groove of the pyramid sleeve 11, the groove of the pyramid sleeve 11 is a dovetail structure, and the inclined wedge 8 is axially limited, a jaw strip 9 is installed in the groove of the jaw sector plate 33, and the jaw strip 9 is axially limited by the sector plate 36, the inclined wedge 8 is in contact with the jaw strip 9 through an inclined surface, and the hook head structure is used for limiting the position, and a jaw tooth plate 35 is installed on the jaw strip 9.

[0037] The utility model describes a pyramid sleeve reel with mechanical jaws, in which a pull sleeve 32 is installed on the left side of a hollow sleeve 12, the pull sleeve 32 and the hollow sleeve 12 are fixed by a locking nut 6 on the left side of the pull sleeve 32, the pull sleeve 32 and the inclined wedge 8 are connected by a pin 7, and the hollow sleeve 12, the inclined wedge 8 and the piston rod 38 can be regarded as a whole after being connected, and move together.

[0038] In the pyramid sleeve reel with mechanical jaws described in the utility model, the gear 19 is connected to the motor and the transmission device, and the four-channel rotary joint 26 is connected to the hydraulic oil output device.

[0039] In order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is further explained below through a specific working principle.

[0040] In specific use, according to the pyramid sleeve reel with mechanical jaws described in the utility model;

[0041] The realization method and principle of the reel rotation function are as follows: the gear 19 is driven to rotate through the motor and the transmission device, the gear 19 drives the main shaft 42 through the transmission key 18, the main shaft 42 drives the pyramid sleeve 11 through the guide key 10, and the pyramid sleeve 11 drives the fan-shaped plate 36 to rotate together, thereby realizing the reel rotation function.

[0042] The realization method and principle of the expansion and contraction function of the reel are as follows: the hydraulic oil is introduced into the four-channel rotary joint 26 and enters the double-stroke expansion and contraction oil cylinder 25, wherein the two-way hydraulic oil drives the axial movement of the piston 2 41, and then drives the piston rod 2 37, drives the pull rod 5 to move axially, the pull rod 5 drives the extension shaft 4, and the extension shaft 4 drives the pyramid sleeve 11 to move axially together. Since the pyramid sleeve 11 is in contact with the fan plate 36 and the jaw fan plate 33 through the inclined surface, the hook head is limited, and the fan plate 36 and the jaw fan plate 33 are fixed on the main shaft 42 through the clamping plate 17 and then axially limited, the axial movement of the pyramid sleeve 11 is finally converted into the radial movement of the fan plate 33 and the jaw fan plate 36, and the expansion and contraction function of the reel is realized.

[0043] The realization method and principle of the clamping and releasing function of the jaws are as follows: hydraulic oil is introduced into the four-channel rotary joint 26 and enters the double-stroke expansion and contraction cylinder 25, two of which drive the axial movement of the piston 39, and then drive the piston rod 37, drive the hollow sleeve 12 to move axially, and the hollow sleeve 12 drives the axial movement of the inclined wedge 8. The axial movement of the inclined wedge 8 is converted into radial movement of the jaw strip 9 and the jaw tooth plate 35 through the inclined surface and the axial limit of the jaw strip 9, thereby realizing the clamping and releasing of the jaws.

[0044] To sum up, with the help of the above-mentioned technical scheme of the utility model, through the optimization and improvement design of the product of the utility model, a double-stroke cylinder is adopted, one stroke is used to control the expansion and contraction of the reel, and the other end stroke controls the mechanical action of the jaw assembly through a hollow sleeve, thereby retaining the reliable structure of the pyramid sleeve reel while realizing the function of the mechanical jaw, thereby achieving the beneficial effect of avoiding oil leakage from the hydraulic jaws and contaminating the strip, while also further reducing the equipment cost.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pyramid sleeve reel with mechanical jaws, characterized in that: The invention comprises a main shaft (42) provided with a pyramid sleeve (11), the left end of the pyramid sleeve (11) being connected to an extension shaft (4) by means of screws, the extension shaft (4) being provided with a stopper for being mounted in cooperation with the pyramid sleeve (11), the extension shaft (4) being further provided with a head support component (3), the right end of the pyramid sleeve (11) being provided with a dustproof retaining ring (14), a dustproof retaining ring (13) being provided inside the dustproof retaining ring (14), the dustproof retaining ring (14) being in contact with an upper step of the main shaft (42) for mechanically limiting the expansion of the reel when it is in a maximum circular state.

2. A pyramid sleeve reel with mechanical jaws according to claim 1, characterized in that: The main shaft (42) and the extension shaft (4) are both provided with an internal through hole, a hollow sleeve (12) is passed through the internal through hole of the main shaft (42), a bushing 2 (31) and a bushing 3 (20) are provided between the hollow sleeve (12) and the main shaft (42), the hollow sleeve (12) is also provided with an internal through hole, a pull rod (5) is passed through the internal through hole of the hollow sleeve (12), a bushing 4 (21) is provided between the right part of the hollow sleeve (12) and the pull rod (5), the pull rod (5) passes through the internal through hole of the extension shaft (4), a bushing 1 (2) is provided between the pull rod (5) and the extension shaft (4), the pull rod (5) and the extension shaft (4) are relatively fixed by a nut 1 (1) and a step, and the pull rod (5), the extension shaft (4) and the pyramid sleeve (11) can move axially synchronously.

3. A pyramid sleeve reel with mechanical jaws according to claim 2, characterized in that: The main shaft (42) is provided with two keyways for installing a guide key (10) and a transmission key (18), a gear (19) is installed on the main shaft (42), a transmission key (18) is installed between the main shaft (42) and the gear (19), and a guide key (10) is installed between the main shaft (42) and the pyramid sleeve (11).

4. A pyramid sleeve reel with mechanical jaws according to claim 3, characterized in that: The right end of the main shaft (42) is threadedly connected to a flange (22), the right end of the flange (22) is provided with a connecting body (24), an adjustment pad (23) is installed between the flange (22) and the connecting body (24), and the connecting body (24) is a split structure; the right end of the flange (22) is bolted to a double-stroke expansion and contraction cylinder (25), and the right end of the double-stroke expansion and contraction cylinder (25) is provided with a four-channel rotary joint (26).

5. A pyramid sleeve reel with mechanical jaws according to claim 4, characterized in that: The double-stroke expansion and contraction oil cylinder (25) comprises a cylinder barrel (40), a piston rod 1 (38) and a piston rod 2 (37), wherein one end of the piston rod 1 (38) and one end of the piston rod 2 (37) are respectively connected to a piston 1 (39) and a piston 2 (41).

6. A pyramid sleeve reel with mechanical jaws according to claim 5, characterized in that: The piston rod 1 (38) is threadedly connected to the hollow sleeve (12) via a coupling (28), and the coupling (28) is installed inside the connecting body (24). The left and right ends of the coupling (28) are respectively provided with a nut 2 (29) and a nut 3 (27); the pull rod (5) is threadedly connected to the piston rod 2 (37), and a nut 4 (30) is provided on the thread at the right end of the pull rod (5); the nut 2 (29), the nut 3 (27), and the nut 4 (30) are all installed inside the connecting body (24).

7. A pyramid sleeve reel with mechanical jaws according to claim 6, characterized in that: The pyramid sleeve (11) is provided with three fan-shaped plates (36) and one jaw fan-shaped plate (33) on four sides; the pyramid sleeve (11) and the three jaw fan-shaped plates (33) and one fan-shaped plate (36) are in oblique contact with each other and are provided with lining plates (34) and are limited by a hook structure; the fan-shaped plates (36) and the jaw fan-shaped plates (33) are both clamped by a fixing plate (17) on the main shaft (42) so as to axially limit the fan-shaped plates (36) and the jaw fan-shaped plates (33); a slide plate 1 (15) is provided on the fan-shaped plates (36) and the jaw fan-shaped plates (33); and a slide plate 2 (16) is provided on the fixing plate (17).

8. A pyramid sleeve reel with mechanical jaws according to claim 7, characterized in that: The jaw sector plate (33) and the pyramid sleeve (11) are both provided with grooves, the groove of the pyramid sleeve (11) is a dovetail structure and is provided with an inclined wedge (8), a jaw strip (9) is installed in the groove of the jaw sector plate (33), the jaw strip (9) is axially limited by the sector plate (36), the inclined surfaces of the inclined wedge (8) and the jaw strip (9) are in contact and limited by a hook structure, and a jaw tooth plate (35) is provided on the jaw strip (9).

9. A pyramid sleeve reel with mechanical jaws according to claim 8, characterized in that: A pull sleeve (32) is installed on the left side of the hollow sleeve (12); the pull sleeve (32) and the hollow sleeve (12) are fixed by a locking nut (6) on the left side of the pull sleeve (32); the pull sleeve (32) and the inclined wedge (8) are connected by a pin shaft (7); the hollow sleeve (12), the inclined wedge (8), and the piston rod (38) move synchronously.

10. A pyramid sleeve reel with mechanical jaws according to any one of claims 4 to 9, characterized in that: The gear (19) is connected to the motor and the transmission device, and the four-channel rotary joint (26) is connected to the hydraulic oil output device.

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