Manual and automatic integrated heavy load in-place locking mechanism

Abstract

The invention provides a manual and automatic integrated heavy load in-place locking mechanism, and belongs to the technical field of mechanical locking. The mechanism comprises an end sleeve, a connecting sleeve, an inner tooth sleeve, a support sleeve, a conical barrel, an outer tooth friction block, a hydraulic cylinder and a screw rod and screw sleeve transmission assembly. The screw rod is rotated hydraulically or manually to push the conical cylinder to move axially, the outer tooth friction block is driven to expand radially under the action of a conical surface to be meshed with inner teeth of the inner tooth sleeve in a staggered manner to realize locking, and the bearing capacity can reach hundreds of tons by means of self-locking of the conical surface and tooth-shaped bearing. And the V-shaped spring and the disc spring are arranged, motion decoupling and locking compensation are achieved respectively, and overload deformation of the locked piece is avoided. A stop pin for limiting, a guide key for preventing rotation and a position sensor are arranged to ensure reliable action. The locking mechanism has the automatic operation function and the manual emergency function, solves the problems that a traditional steel ball type or conical surface type locking mechanism is low in bearing, large in spring occupied space, prone to being stuck and the like, and is suitable for the high-reliability locking requirement of heavy equipment.

Description

Technical Field

[0001] This invention relates to the field of mechanical locking, and more specifically to a manual / automatic heavy-duty locking mechanism for positioning. Background Technology

[0002] In fields such as heavy machinery, aerospace, rail transportation, and large equipment manufacturing, highly reliable and high-load-bearing locking mechanisms are key components ensuring the safe operation of equipment. Especially in applications requiring precise positioning and reliable locking under heavy loads, traditional hydraulic drives combined with mechanical locking structures are widely used. Common mechanical locking methods mainly include two types: ball-type locking and conical-surface locking.

[0003] Steel ball mechanical locking mechanisms typically utilize multiple steel balls embedded in axial grooves or annular recesses, achieving radial locking through spring preload or hydraulic actuation. While this type of structure offers sensitive action and fast response, the point or small-area line contact between the steel balls and the contact surface results in a small effective load-bearing area, leading to lower impact resistance and static load-bearing capacity. It is generally only suitable for light to medium load applications in the range of a few tons. Furthermore, under heavy load conditions, it is prone to localized plastic deformation or fatigue spalling, affecting its service life and safety.

[0004] Another common type of conical mechanical locking mechanism achieves fixation through the frictional self-locking effect generated by the mutual pressing of two matching conical surfaces. Compared with the steel ball type, this structure has a larger contact area and higher load-bearing capacity, reaching tens of tons, and has been applied in some medium and heavy-duty equipment. However, with the further increase in locking force requirements, high-strength, high-stiffness compression springs must be configured to ensure sufficient preload and anti-loosening performance. This makes the spring assembly bulky, significantly increasing the space occupied, which is not conducive to the miniaturization and compact layout of the overall structure. At the same time, the machining accuracy of the conical surfaces is extremely high. Even small manufacturing errors or assembly deviations can lead to uneven contact and stress concentration, resulting in early failure. This places stringent requirements on the machining process and assembly accuracy.

[0005] More importantly, both types of traditional mechanical locking mechanisms commonly suffer from the problem of "locking upon positioning" in actual use. That is, once the locking action is triggered, the maximum locking force is immediately applied. This rigid locking mode is difficult to adapt to dimensional tolerances or positional deviations during installation, and can easily cause the locked components to undergo elastic or even plastic deformation due to uneven force or over-constraint, affecting the overall assembly quality and operational stability.

[0006] Therefore, existing mechanical locking devices have shown obvious limitations when facing application requirements of hundreds of tons of ultra-heavy load, high reliability, strong fault tolerance and manual emergency function: insufficient load-bearing capacity, low structural space utilization, poor anti-interference ability, lack of flexible compensation mechanism and emergency operation means, etc., which need to be solved urgently. Summary of the Invention

[0007] The main objective of this invention is to provide a manual / automatic heavy-duty positioning and locking mechanism to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: it includes a fixedly connected end sleeve and a connecting sleeve, a sliding support sleeve is provided inside the connecting sleeve and the end sleeve, a plurality of radially movable external tooth friction blocks are provided on the periphery of the support sleeve, and an internal tooth sleeve is fixedly provided between the connecting sleeve and the end sleeve. The support sleeve has a sliding cone. The bottom of multiple external tooth friction blocks abuts against the cone surface of the cone through an arc-shaped inclined surface. The movement of the cone drives the multiple external tooth friction blocks to move radially outward and abut against the inner tooth sleeve. The contact surfaces of the inner tooth sleeve and the external tooth friction blocks are engaged by interlaced helical teeth. A hydraulic cylinder is connected to the end of the connecting sleeve, and a lead screw is provided at the tail of the cone. The lead screw is connected to the piston cylinder of the hydraulic cylinder through a lead sleeve. The cone is pushed by rotating the lead screw, or the lead screw is pushed by driving the lead sleeve through the hydraulic cylinder.

[0009] Preferably, a locking bolt is fixed at the end of the bracket sleeve, and a disc spring and a pressure cap are sleeved between the locking bolt and the bracket sleeve.

[0010] Preferably, a cover plate is fixed at the tail end of the cone, and the end of the lead screw is engaged in the cone and the cover plate for rotation; A V-shaped spring is fitted between the cone and the cover plate, and the outside of the V-shaped spring abuts against the support sleeve.

[0011] Preferably, the connecting sleeve has radially penetrating through holes on both sides, and a stop pin is installed in the through hole. The stop pin extends into the connecting sleeve so that the end of the bracket sleeve abuts against the stop pin for limiting. The inner wall of the connecting sleeve is provided with an anti-rotation groove, and a guide key is fixed on the outside of the cover plate. The guide key slides against the anti-rotation groove. A square groove is provided on the side of the cover plate opposite to the stop pin. When the cover plate moves, the stop pin enters the square groove.

[0012] Preferably, the bracket sleeve is provided with multiple radially penetrating sliding grooves on its periphery, and grooves are provided on both sides of the sliding grooves. The external tooth friction block moves against the sliding grooves. Connecting ears are fixed on both sides of the sliding grooves, and the connecting ears abut against the grooves and are limited by bolts and pressure plates.

[0013] Preferably, the cone end is provided with a locking hole, and a locking shaft is fixed inside the support sleeve. The locking shaft is inserted into the locking hole by rotation. The support sleeve and the cone are connected axially by multiple anti-rotation pins. The anti-rotation pins are fixed on the support sleeve, and their ends are inserted into the blind hole at the end of the cone.

[0014] Preferably, the end of the hydraulic cylinder barrel in the hydraulic cylinder is fixedly connected to the connecting sleeve, an inner sleeve is fixedly provided inside the hydraulic cylinder barrel, the piston cylinder sealing sleeve slides on the inner sleeve, one end of the inner sleeve is fixedly connected to the hydraulic cylinder barrel, and the other end is connected to the hydraulic cylinder barrel through a double-layer sealing sleeve, the end of the piston cylinder slides between the double-layer sealing sleeve, and the end of the piston cylinder is fixedly connected to the threaded sleeve through a connecting plate.

[0015] Preferably, the inner sleeve has an inner spline hole, and the outer sleeve has an outer spline shaft, which moves against the inner spline hole.

[0016] Preferably, the end of the lead screw is a square shaft, and a locking plate is fixed at the tail of the hydraulic cylinder. The center hole of the locking plate is a square hole, which fits onto the square shaft to lock it.

[0017] Preferably, a position sensor and a hydraulic oil valve assembly are fixedly mounted on the outside of the hydraulic cylinder barrel. The hydraulic oil valve assembly is used to connect the hydraulic oil pipeline and allow hydraulic oil to flow into the hydraulic cylinder. The position sensor probe extends into the hydraulic cylinder to detect the position of the connecting plate.

[0018] This invention provides a manual / automatic heavy-duty locking mechanism with the following advantages: 1. This application achieves free switching between two operating modes: hydraulic automatic drive and manual screw drive, through the threaded engagement of the lead screw and the lead sleeve, combined with the hydraulic cylinder driving the piston cylinder to move the lead sleeve. In abnormal operating conditions such as hydraulic system failure or power outage, locking and unlocking actions can be completed by manually rotating the lead screw, significantly improving the safety of equipment operation and emergency response capability; 2. By using the outer conical surface of the cone to push the outer tooth friction block to expand radially, it forms an interlocking engagement with the inner teeth of the inner tooth sleeve. Combined with the self-locking principle of the conical surface, a high-rigidity and high-impact-resistance mechanical self-locking is achieved. This structure can maintain a stable locking state even when subjected to heavy loads, vibration, or impact loads, effectively preventing loosening. It is suitable for harsh working conditions such as heavy equipment and engineering machinery. 3. The disc spring provides compression buffer during the locking process to compensate for installation errors or machining tolerances, ensuring that the teeth of the outer tooth friction block and the inner tooth sleeve can fully and accurately mesh; the V-type spring drives both to move synchronously in the initial stage of locking, and after contacting the locked object, it allows the cone to continue to move forward relative to the support sleeve, realizing step-by-step action; 4. By setting a stop pin inside the connecting sleeve to limit the stroke of the bracket sleeve, and setting a square groove on the cover plate to achieve clearance, the position of each component during locking and resetting is ensured to be precise and controllable. At the same time, the guide key and the anti-rotation groove cooperate to restrict the rotation of the cover plate and the cone, ensuring their axial linear movement, preventing jamming, and improving transmission efficiency and service life. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 Sectional view of AA; Figure 3 This is the present invention. Figure 2 BB section view; Figure 4 This is an exploded view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the arc-shaped ear structure of the present invention; Figure 6 This is a schematic diagram of the installation of the position sensor of the present invention; Figure 7 This is an enlarged view of the meshing of the external tooth friction block and the internal tooth sleeve of the present invention; In the diagram: End sleeve 1; Connecting sleeve 2; Anti-rotation groove 201; Internal gear sleeve 3; Stop pin 4; Hydraulic cylinder 5; Inner sleeve 6; Locking plate 7; Lead screw 8; Piston cylinder 9; Threaded sleeve 10; Sealing sleeve 11; Connecting disc 12; Cover plate 13; Square groove 1301; Guide key 1302; Conical cylinder 14; Locking hole 1401; Bracket sleeve 15; Sliding groove 1501; Groove 1502; Locking shaft 1503; Disc spring 16; Pressure cap 17; Locking bolt 18; External gear friction block 19; Connecting ear 1901; Anti-rotation pin 20; Hydraulic oil valve assembly 21; Position sensor 22; V-shaped spring 23; Arc-shaped ear 24. Detailed Implementation

[0020] like Figures 1-7 As shown, a manual / automatic heavy-duty positioning locking mechanism includes a fixedly connected end sleeve 1 and a connecting sleeve 2. A sliding support sleeve 15 is provided inside the connecting sleeve 2 and the end sleeve 1. A plurality of radially movable external tooth friction blocks 19 are provided around the support sleeve 15. An internal tooth sleeve 3 is fixed between the connecting sleeve 2 and the end sleeve 1. The bracket sleeve 15 is provided with a sliding cone 14. The bottom of multiple external tooth friction blocks 19 abuts against the cone surface of the cone 14 through the arc-shaped inclined surface. The movement of the cone 14 drives the multiple external tooth friction blocks 19 to move radially outward and abut against the inner tooth sleeve 3. The contact surfaces of the inner tooth sleeve 3 and the external tooth friction blocks 19 are engaged by interlaced helical teeth. A hydraulic cylinder is connected to the end of the connecting sleeve 2, and a lead screw 8 is provided at the tail of the cone cylinder 14. The lead screw 8 is connected to the piston cylinder 9 of the hydraulic cylinder through the lead sleeve 10. The cone cylinder 14 is pushed by rotating the lead screw 8, or the lead screw 8 is pushed by driving the lead sleeve 10 through the hydraulic cylinder.

[0021] When locking is used, the hydraulic cylinder automatically or manually drives the lead screw 8 to move to the right through the lead screw 8 and lead sleeve 10. The push cone 14 drives the support sleeve 15 to move to the right together through the V-shaped spring 23 until the end of the support sleeve 15 is in place and in contact with the object to be locked. At this time, the cone 14 continues to move to the right against the action of the V-shaped spring 23, and pushes multiple external tooth friction blocks 19 to move radially outward through the outer conical surface of the cone 14. When the teeth of the external tooth friction blocks 19 are misaligned and difficult to mesh with the teeth on the inner tooth sleeve 3, the support sleeve 15 continues to move to the right, compressing the disc spring 16 at the end until the teeth of the external tooth friction blocks 19 are fully meshed with the teeth of the inner tooth sleeve 3, and self-locking is achieved through the inner conical engagement of the cone 14 and the external tooth friction blocks 19.

[0022] When unlocking is required, the hydraulic cylinder automatically or manually drives the lead screw 8 to move to the left, which causes the cone 14 to move to the left and disengage from the inner cone of the external tooth friction block 19. The external tooth friction block 19 retracts radially under the action of the disc spring 16 and disengages from the internal tooth sleeve 3 under the drive of the lead screw 8. Finally, the bracket sleeve 15 contacts and blocks the stop pin 4. The cone 14 drives the external tooth friction block 19 to continue moving to the left to return to its original position and reset the V-shaped spring 23.

[0023] Preferably, a locking bolt 18 is fixed at the end of the bracket sleeve 15, and a disc spring 16 and a pressure cap 17 are sleeved between the locking bolt 18 and the bracket sleeve 15.

[0024] The disc spring 16 and the pressure cap 17 are fitted onto the end of the bracket sleeve 15 and have a certain amount of compressible movement space. When locking, the pressure cap 17 first contacts the object being locked. During the continuous locking process, the compression of the disc spring 16's movement space can ensure that the outer tooth friction block 19 and the inner tooth sleeve 3 are perfectly engaged. When unlocking is required, the rebound force of the disc spring 16 can disengage the outer tooth friction block 19 and the inner tooth sleeve 3, thus achieving locking gap compensation and unlocking energy storage.

[0025] Preferably, a cover plate 13 is fixed at the tail of the cone 14, and the end of the lead screw 8 is locked in the cone 14 and the cover plate 13 for rotation; by locking the end of the lead screw 8 on the cone 14 for rotation through the cover plate 13, the rotational pushing of the lead screw 8 and the lead sleeve 10 can be converted into linear movement of the cone 14.

[0026] A V-shaped spring 23 is sleeved between the cone 14 and the cover plate 13, and the outside of the V-shaped spring 23 abuts against the bracket sleeve 15.

[0027] The inner side of the V-shaped spring 23 is fixed to the cone 14, and the outer side abuts against the end of the bracket sleeve 15. In the early stage of locking movement, the lead screw 8 pushes the cone 14 and drives the bracket sleeve 15 to move together through the V-shaped spring 23. After contacting the object to be locked, the movement of the cone 14 overcomes the movement of the V-shaped spring 23, causing the V-shaped spring 23 to retract and enter the interior of the bracket sleeve 15, abutting against its inner wall and moving, thereby forming a relative movement between the cone 14 and the bracket sleeve 15. This relative movement is then converted into a push against the external tooth friction block 19, causing it to move radially and extend.

[0028] Preferably, the connecting sleeve 2 has radially penetrating through holes on both sides, and a stop pin 4 is installed in the through hole. The stop pin 4 extends into the connecting sleeve 2 so that the end of the bracket sleeve 15 abuts against the stop pin 4 for limiting. When locking, the cone cylinder 14 drives the bracket sleeve 15 to move to the left. When the bracket sleeve 15 moves to the position of the stop pin 4, the cone cylinder 14 can continue to move to the right to reset the external tooth friction block 19 and the V-shaped spring 23.

[0029] The inner wall of the connecting sleeve 2 is provided with an anti-rotation groove 201, and the cover plate 13 is fixedly provided with a guide key 1302. The guide key 1302 slides against the anti-rotation groove 201. The cover plate 13 slides against the anti-rotation groove 201 through the guide key 1302, which can ensure that the cover plate 13 moves in a straight line. The cover plate 13 is also fixedly connected to the cone 14 to ensure that it moves in a straight line.

[0030] A square groove 1301 is provided on the side of the cover plate 13 opposite to the stop pin 4. When the cover plate 13 moves, the stop pin 4 enters the square groove 1301. During the continuous rightward movement of the cone cylinder 14 and the cover plate 13, the stop pin 4 will enter the square groove 1301 to avoid obstruction and ensure the movement stroke.

[0031] Preferably, the bracket sleeve 15 has multiple radially penetrating sliding grooves 1501 around its periphery, and grooves 1502 are provided on both sides of the sliding grooves 1501. The external tooth friction block 19 moves against the sliding grooves 1501. Connecting ears 1901 are fixed on both sides of the sliding grooves 1501. The connecting ears 1901 abut against the grooves 1502 and are limited by bolts and pressure plates.

[0032] The external tooth friction block 19 is installed in the sliding groove 1501 and moves radially. The connecting ears 1901 at both ends are connected to the groove 1502 by bolts and pressure plates. The limiting structure of bolts and pressure plates ensures that the external tooth friction block 19 is always located in the sliding groove 1501 and can only extend or retract part for locking or unlocking.

[0033] Preferably, the cone 14 has a locking hole 1401 at its end, and a locking shaft 1503 is fixed inside the support sleeve 15. The locking shaft 1503 is inserted into the locking hole 1401 by rotation. The support sleeve 15 and the cone 14 are connected axially by a plurality of anti-rotation pins 20. The anti-rotation pins 20 are fixed on the support sleeve 15, and their ends are inserted into the blind holes at the end of the cone 14.

[0034] like Figure 5 As shown, arc-shaped ears 24 are provided on both sides of the lock hole 1401 and the lock shaft 1503. By rotating and misaligning, the arc-shaped ears 24 on the lock hole 1401 and the lock shaft 1503 are misaligned, so that the lock shaft 1503 can be inserted into the lock hole 1401. Reversing the lock shaft 1503 makes the arc-shaped ears 24 aligned. At the same time, the bracket sleeve 15 and the cone 14 are connected by the anti-rotation pin 20, so that the two have a certain space for relative axial movement, but cannot be separated.

[0035] Preferably, the end of the hydraulic cylinder barrel 5 in the hydraulic cylinder is fixedly connected to the connecting sleeve 2, the inner sleeve 6 is fixedly provided inside the hydraulic cylinder barrel 5, the piston cylinder 9 is slidably on the inner sleeve 6, one end of the inner sleeve 6 is fixedly connected to the hydraulic cylinder barrel 5, and the other end is connected to the hydraulic cylinder barrel 5 through a double-layer sealing sleeve 11, the end of the piston cylinder 9 slides between the double-layer sealing sleeve 11, and the end of the piston cylinder 9 is fixedly connected to the threaded sleeve 10 through the connecting plate 12.

[0036] A hydraulic chamber is formed between the hydraulic cylinder 5 and the inner sleeve 6. One end of the inner sleeve 6 is fixedly and sealed to the hydraulic cylinder 5, and the other end is sealed through the sealing sleeve 11. There is a sealed sliding piston cylinder 9 in the hydraulic chamber. The end of the piston cylinder 9 extends out and slides between the double-layer sealing sleeves 11. The end of the piston cylinder 9 is also fixedly connected to the threaded sleeve 10 through the connecting plate 12. Thus, the piston cylinder 9 can be pushed by hydraulic pressure to drive the connecting plate 12, the threaded sleeve 10 and the lead screw 8 to move.

[0037] Preferably, the inner sleeve 6 has an internal spline hole, and the outer sleeve 10 has an external spline shaft, which moves against the inner spline hole.

[0038] When manual drive is required via lead screw 8 and sleeve 10, when lead screw 8 is rotated, sleeve 10 cannot rotate because of the spline connection with inner sleeve 6, thus allowing lead screw 8 to rotate and push against cone cylinder 14.

[0039] Preferably, the end of the lead screw 8 is a square shaft, and a locking plate 7 is fixedly provided at the tail of the hydraulic cylinder 5. The center hole of the locking plate 7 is a square hole, which fits onto the square shaft to lock it. When manual drive is not used, the square hole of the locking plate 7 engages with the square shaft at the end of the lead screw 8 to connect it to the hydraulic cylinder 5, thereby preventing the lead screw 8 from rotating.

[0040] Preferably, a position sensor 22 and a hydraulic oil valve assembly 21 are fixedly mounted on the outside of the hydraulic cylinder 5. The hydraulic oil valve assembly 21 is used to connect the hydraulic oil pipeline and allow hydraulic oil to flow into the hydraulic cylinder. The position sensor 22 probe extends into the hydraulic cylinder 5 to detect the position of the connecting plate 12, and then provides feedback on the position status of the hydraulic cylinder.

[0041] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A manual / automatic heavy-duty locking mechanism for positioning, characterized in that: It includes a fixedly connected end sleeve (1) and a connecting sleeve (2), and a sliding support sleeve (15) is provided inside the connecting sleeve (2) and the end sleeve (1). Multiple radially movable external tooth friction blocks (19) are provided on the periphery of the support sleeve (15), and an internal tooth sleeve (3) is fixed between the connecting sleeve (2) and the end sleeve (1). The support sleeve (15) is provided with a sliding cone (14). The bottom of multiple external tooth friction blocks (19) abuts against the cone surface of the cone (14) through an arc-shaped inclined surface. The cone (14) moves and drives the multiple external tooth friction blocks (19) to move radially outward and abut against the inner tooth sleeve (3). The contact surfaces of the inner tooth sleeve (3) and the external tooth friction blocks (19) are engaged by interlaced helical teeth. The end of the connecting sleeve (2) is connected to a hydraulic cylinder, and the tail of the cone (14) is provided with a lead screw (8). The lead screw (8) is connected to the piston cylinder (9) of the hydraulic cylinder through the lead sleeve (10). The cone (14) is pushed by rotating the lead screw (8), or the lead screw (8) is pushed by driving the lead sleeve (10) through the hydraulic cylinder.

2. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: A locking bolt (18) is fixed at the end of the bracket sleeve (15), and a disc spring (16) and a pressure cap (17) are sleeved between the locking bolt (18) and the bracket sleeve (15).

3. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: A cover plate (13) is fixedly installed at the tail of the cone (14), and the end of the lead screw (8) is locked in the cone (14) and the cover plate (13) for rotation; A V-shaped spring (23) is fitted between the cone (14) and the cover plate (13), and the outside of the V-shaped spring (23) abuts against the bracket sleeve (15).

4. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: The connecting sleeve (2) has radial through holes on both sides, and a stop pin (4) is installed in the through hole. The stop pin (4) extends into the connecting sleeve (2) so that the end of the bracket sleeve (15) abuts against the stop pin (4) for limiting. The inner wall of the connecting sleeve (2) is provided with an anti-rotation groove (201), and the cover plate (13) is fixed with a guide key (1302) on the outside. The guide key (1302) slides against the anti-rotation groove (201). A square groove (1301) is provided on the side of the cover plate (13) opposite to the stop pin (4). When the cover plate (13) moves, the stop pin (4) enters the square groove (1301).

5. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: The bracket sleeve (15) has multiple radially penetrating sliding grooves (1501) around its periphery. The sliding grooves (1501) have grooves (1502) on both sides. The external tooth friction block (19) moves against the sliding groove (1501). Connecting ears (1901) are fixed on both sides of the sliding groove (1501). The connecting ears (1901) abut against the grooves (1502) and are limited by bolts and pressure plates.

6. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: The cone (14) has a locking hole (1401) at its end. The support sleeve (15) has a locking shaft (1503) fixed inside. The locking shaft (1503) is inserted into the locking hole (1401) by rotation. The support sleeve (15) and the cone (14) are connected axially by multiple anti-rotation pins (20). The anti-rotation pins (20) are fixed on the support sleeve (15), and their ends are inserted into the blind hole at the end of the cone (14).

7. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: a hydraulic cylinder The end of the hydraulic cylinder (5) is fixedly connected to the connecting sleeve (2). An inner sleeve (6) is fixedly installed inside the hydraulic cylinder (5). The piston cylinder (9) slides on the inner sleeve (6). One end of the inner sleeve (6) is fixedly connected to the hydraulic cylinder (5), and the other end is connected to the hydraulic cylinder (5) through a double-layer sealing sleeve (11). The end of the piston cylinder (9) slides between the double-layer sealing sleeve (11). The end of the piston cylinder (9) is fixedly connected to the threaded sleeve (10) through the connecting plate (12).

8. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 7, characterized in that: The inner sleeve (6) has an inner spline hole inside, and the outer sleeve (10) has an outer spline shaft outside. The outer spline shaft moves against the inner spline hole.

9. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: The end of the lead screw (8) is a square shaft, and the tail of the hydraulic cylinder (5) is fixed with a locking plate (7). The center hole of the locking plate (7) is a square hole, which is fitted onto the square shaft to lock it.

10. The manual / automatic integrated heavy-duty positioning locking mechanism according to claim 1, characterized in that: A position sensor (22) and a hydraulic oil valve assembly (21) are fixedly installed on the outside of the hydraulic cylinder (5). The hydraulic oil valve assembly (21) is used to connect the hydraulic oil pipeline and pass the hydraulic oil into the hydraulic cylinder. The position sensor (22) probe extends into the hydraulic cylinder (5) to detect the position of the connecting plate (12) and thus provide feedback on the position status of the hydraulic cylinder.

Images